Fluke Corporation MET/CAL Procedure ============================================================================= INSTRUMENT: Tek 2445: CAL ADJ /5011,6060,8842 DATE: 14-Mar-95 AUTHOR: Fluke Corporation REVISION: $Revision: 2.3 $ ADJUSTMENT THRESHOLD: 70% NUMBER OF TESTS: 1 NUMBER OF LINES: 1512 CONFIGURATION: Fluke 8842A CONFIGURATION: Tektronix CG5011 CONFIGURATION: Fluke 6060B ============================================================================= # # Source: # Tektronix 2445 Oscilloscope Service Manual 070-3829-00, Revised Jan 1985 # # Compatibility: # 5500/CAL 4.0 or MET/CAL 4.0 or later # # Subprocedures: # None # # Required Files: # 2445ADJ1.bmp # 2445ADJ2.bmp # 2445ADJ3.bmp # 2445ADJ4.bmp # # System Specifications: # TUR calculation is based on specification interval of the accuracy file. # The default CG 5011 and 6060B accuracy files contains 90 day specs. # # Fluke makes no warranty, expressed or implied, as to the fitness # or suitability of this procedure in the customer's application. # STEP FSC RANGE NOMINAL TOLERANCE MOD1 MOD2 3 4 CON 1.001 ASK- D N P J F W 1.002 HEAD ********************* WARNING ************************* 1.003 DISP Dangerous potentials exist at several points throughout 1.003 DISP this instrument. Do not touch exposed connections or 1.003 DISP components. Some transitors may have elevated case 1.003 DISP voltages. The line-rectifier capacitors normally retain 1.003 DISP a charge for 15 to 20 seconds after the instrument is 1.003 DISP turned off and can remain charged for a longer period 1.003 DISP if a bleeder-resistor or power-supply problem occurs. 1.004 HEAD PREPARATION 1.005 DISP 1) Unplug the power cord from the AC power source. 1.005 DISP 2) Unplug the power cord from the rear-panel connector. 1.005 DISP 3) Install the front cover, place the cabinet carrying 1.005 DISP handle against the bottom of the cabinet, and set the 1.005 DISP instrument face down on a flat surface. 1.005 DISP 4) Unwrap the power cord and remove it. 1.006 DISP 5) Remove the four screws in the rear feet. 1.006 DISP 6) Remove the two screws from the top-center and 1.006 DISP bottom-center of the rear cover. 1.006 DISP 7) Lift the rear cover away from the instrument, 1.006 DISP leaving the rear feet attached. 1.006 DISP 8) Slide the cabinet off the instrument. 1.007 PIC 2445ADJ3 1.007 PIC (1,42,R/W) "Move jumper P501 to the CAL position" 1.007 PIC (2,42,R/W) "(towards rear of UUT)." 1.007 PIC (3,42,R/W) "Note: Line Power must be off." 1.007 PIC (4,42,R/W) 1.007 PIC "Status of jumper is only detected on power-up." 1.007 PIC (11,24,R/W) "P501" 1.007 PIC (13,26,R/W) "v" 1.008 DISP Connect the instrument to line power and turn it on. 1.008 DISP 1.008 DISP ********************* NOTE *************************** 1.008 DISP The instrument MUST have a 20-minute warmup period 1.008 DISP before making any adjustments. Performing the 1.008 DISP adjustment procedure while the temperature is drifting 1.008 DISP may cause erroneous calibration settings. 1.009 HEAD POWER-UP TESTS 1.010 OPBR Does the top line of the readout display say: 1.010 OPBR "DIAGNSTIC. PUSH A/B TRIG TO EXIT" 1.011 JMPF 1.017 1.012 ASK- A 1.013 OPBR Is the error message on the bottom line of the display 1.013 OPBR "TEST 04 FAIL xx" where "xx" is 01, 10 or 11? 1.014 JMPT 1.017 1.015 DISP A hardware failure has been detected, the instrument 1.015 DISP must be repaired before attempting calibration. 1.016 END 1.017 ASK- F 1.018 DISP Press the A/B TRIG button. 1.019 HEAD CONTROL SETTINGS 1.020 SET VOLTS/DIV CH 1 : * 1.020 SET VOLTS/DIV CH 2 : 0.1V 1.020 SET VOLTS/DIV CH 3 : 0.1V 1.020 SET VOLTS/DIV CH 4 : 0.1V 1.020 SET Input Coupling CH 1 : 1 MOhm DC 1.020 SET Input Coupling CH 2 : 1 MOhm DC 1.021 SET Channels : 1;On 2;Off 3;Off 4;Off 1.021 SET ADD : Off 1.021 SET INVERT : Off 1.021 SET BW LIMIT : Off 1.021 SET ALT/CHOP : ALT 1.022 SET A and B SEC/DIV : X-Y 1.022 SET TRIGGER : +, AUTO LVL, VERT, DC 1.022 SET Delta : V and t Off 1.022 SET TRACKING : * 1.022 SET INTENSITY : Visible display 1.022 SET READOUT INTENSITY : Visible display 1.022 SET FOCUS : Defocused dot 1.023 DISP CH 1 VAR : In detent (locked CW) 1.023 DISP CH 2 VAR : In detent (locked CW) 1.023 DISP TRIG HOLDOFF : In detent (locked CW, B ENDS A) 1.023 DISP SCALE ILLUM : fully CCW 1.023 DISP VERT POS : Midrange 1.023 DISP Horz POS : Midrange 1.023 DISP TRIG LEVEL : Midrange 1.024 HEAD POWER SUPPLY DC LEVELS AND REGULATION 1.025 PIC 2445ADJ4 (8,44,R/W) "J119->" 1.025 PIC (10,19,R/W) 1.025 PIC "Connect the 8842A positive lead to test pt J119 pin 4." 1.025 PIC (11,19,R/W) 1.025 PIC "Connect the 8842A negative lead to chassis ground." 1.026 PIC 2445ADJ1 (10,45,R/W) "R1292" 1.026 PIC (7,7,R/W) 1.026 PIC "Adjust R1292 (VOLT REF ADJ) for an 8842A reading of" 1.026 PIC (8,7,R/W) "precisely 10V." 1.026 PIC (9,7,R/W) "Press ADV to begin 8842A monitoring." 1.027 MESS Adjust R1292 for a 8842A reading of precisely 10.00V. 1.028 8842 10V S 2W 1.029 MESS 1.030 HEAD POWER SUPPLY DC LEVELS AND REGULATION: +87V 1.031 PIC 2445ADJ4 (8,43,R/W) "J119->" 1.031 PIC (6,13,R/W) 1.031 PIC "Connect the 8842A positive lead to test pt J119 pin 8." 1.032 8842 87V N 2W 1.033 MATH MEM1 = MEM - 87 1.034 JMPZ 1.036 1.74U 1.035 DISP Measured [MEM]V FAIL 1.036 HEAD POWER SUPPLY DC LEVELS AND REGULATION: +42.2V 1.037 PIC 2445ADJ4 (8,43,R/W) "J119->" 1.037 PIC (6,13,R/W) 1.037 PIC "Connect the 8842A positive lead to test pt J119 pin 9." 1.038 8842 42.2V N 2W 1.039 MATH MEM1 = MEM - 42.2 1.040 JMPZ 1.042 0.85U 1.041 DISP Measured [MEM]V FAIL 1.042 HEAD POWER SUPPLY DC LEVELS AND REGULATION: +15V 1.043 PIC 2445ADJ4 (8,43,R/W) "J119->" 1.043 PIC (6,13,R/W) 1.043 PIC "Connect the 8842A positive lead to test pt J119 pin 6." 1.044 8842 15V N 2W 1.045 MATH MEM1 = MEM - 15 1.046 JMPZ 1.048 0.225U 1.047 DISP Measured [MEM]V FAIL 1.048 HEAD POWER SUPPLY DC LEVELS AND REGULATION: +5V 1.049 PIC 2445ADJ4 (8,43,R/W) "J119->" 1.049 PIC (6,13,R/W) 1.049 PIC "Connect the 8842A positive lead to test pt J119 pin 2." 1.050 8842 5V N 2W 1.051 MATH MEM1 = MEM - 5 1.052 JMPZ 1.054 0.15U 1.053 DISP Measured [MEM]V FAIL 1.054 PIC 2445ADJ4 (8,43,R/W) "J119->" 1.054 PIC (6,13,R/W) 1.054 PIC "Connect the 8842A pos lead to test pt J119 pin 12." 1.055 8842 5V N 2W 1.056 MATH MEM1 = MEM - 5 1.057 JMPZ 1.059 0.075U 1.058 DISP Measured [MEM]V FAIL 1.059 HEAD POWER SUPPLY DC LEVELS AND REGULATION: -5V 1.060 PIC 2445ADJ4 (8,43,R/W) "J119->" 1.060 PIC (6,13,R/W) 1.060 PIC "Connect the 8842A positive lead to test pt J119 pin 5." 1.061 8842 -5V N 2W 1.062 MATH MEM1 = MEM + 5 1.063 JMPZ 1.065 0.035U 1.064 DISP Measured [MEM]V FAIL 1.065 HEAD POWER SUPPLY DC LEVELS AND REGULATION: -8V 1.066 PIC 2445ADJ4 (8,43,R/W) "J119->" 1.066 PIC (6,13,R/W) 1.066 PIC "Connect the 8842A pos lead to test pt J119 pin 11." 1.067 8842 -8V N 2W 1.068 MATH MEM1 = MEM + 8 1.069 JMPZ 1.071 0.12U 1.070 DISP Measured [MEM]V FAIL 1.071 HEAD POWER SUPPLY DC LEVELS AND REGULATION: -15V 1.072 PIC 2445ADJ4 (8,43,R/W) "J119->" 1.072 PIC (6,13,R/W) 1.072 PIC "Connect the 8842A positive lead to test pt J119 pin 1." 1.073 8842 -15V N 2W 1.074 MATH MEM1 = MEM + 15 1.075 JMPZ 1.077 0.225U 1.076 DISP Measured [MEM]V FAIL 1.077 DISP Disconnect the 8842A from the UUT. 1.078 HEAD POWER SUPPLY RIPPLE 1.079 OPBR This test requires an oscilloscope. 1.079 OPBR Do you wish to perform the test? 1.080 JMPF 1.118 1.081 DISP Set the test oscilloscope as follows: 1.081 DISP 1.081 DISP Sweep Speed 5ms/div 1.081 DISP CH 1 Input Coupling 1 MOHm AC 1.081 DISP Vertical controls To display CH 1 1.081 DISP Trigger controls Line source, triggered display 1.081 DISP Volts/Division 2mV 1.081 DISP BW Limit 20MHz 1.082 HEAD POWER SUPPLY RIPPLE: J119 pin 4 1.083 PIC 2445ADJ4 (8,44,R/W) "J119->" 1.083 PIC (10,6,R/W) 1.083 PIC "Using a 1x probe, connect the test scope probe tip" 1.083 PIC (11,6,R/W) 1.083 PIC "to J119 pin 4." 1.083 PIC (12,6,R/W) 1.083 PIC "Connect the test scope ground lead to chassis ground." 1.084 OPBR Is the ripple at two times the line frequency <= 1mV 1.084 OPBR and the total peak-to-peak ripple <= 100mV? 1.085 JMPF 1.821 1.086 HEAD POWER SUPPLY RIPPLE: J119 pin 8 1.087 PIC 2445ADJ4 (8,43,R/W) "J119->" 1.087 PIC (10,8,R/W) 1.087 PIC "Connect the test scope probe tip to J119 pin 8." 1.088 OPBR Is the ripple at two times the line frequency <= 5mV 1.088 OPBR and the total peak-to-peak ripple <= 80mV? 1.089 JMPF 1.821 1.090 HEAD POWER SUPPLY RIPPLE: J119 pin 9 1.091 PIC 2445ADJ4 (8,43,R/W) "J119->" 1.091 PIC (10,8,R/W) 1.091 PIC "Connect the test scope probe tip to J119 pin 9." 1.092 OPBR Is the ripple at two times the line frequency <= 2mV 1.092 OPBR and the total peak-to-peak ripple <= 100mV? 1.093 JMPF 1.821 1.094 HEAD POWER SUPPLY RIPPLE: J119 pin 6 1.095 PIC 2445ADJ4 (8,43,R/W) "J119->" 1.095 PIC (10,8,R/W) 1.095 PIC "Connect the test scope probe tip to J119 pin 6." 1.096 OPBR Is the ripple at two times the line frequency <= 11mV 1.096 OPBR and the total peak-to-peak ripple <= 15mV? 1.097 JMPF 1.821 1.098 HEAD POWER SUPPLY RIPPLE: J119 pin 2 1.099 PIC 2445ADJ4 (8,43,R/W) "J119->" 1.099 PIC (10,8,R/W) 1.099 PIC "Connect the test scope probe tip to J119 pin 2." 1.100 OPBR Is the ripple at two times the line frequency <= 30mV 1.100 OPBR and the total peak-to-peak ripple <= 150mV? 1.101 JMPF 1.821 1.102 HEAD POWER SUPPLY RIPPLE: J119 pin 12 1.103 PIC 2445ADJ4 (8,43,R/W) "J119->" 1.103 PIC (10,8,R/W) 1.103 PIC "Connect the test scope probe tip to J119 pin 12." 1.104 OPBR Is the ripple at two times the line frequency <= 1mV 1.104 OPBR and the total peak-to-peak ripple <= 15mV? 1.105 JMPF 1.821 1.106 HEAD POWER SUPPLY RIPPLE: J119 pin 5 1.107 PIC 2445ADJ4 (8,43,R/W) "J119->" 1.107 PIC (10,8,R/W) 1.107 PIC "Connect the test scope probe tip to J119 pin 5." 1.108 OPBR Is the ripple at two times the line frequency <= 1mV 1.108 OPBR and the total peak-to-peak ripple <= 15mV? 1.109 JMPF 1.821 1.110 HEAD POWER SUPPLY RIPPLE: J119 pin 11 1.111 PIC 2445ADJ4 (8,43,R/W) "J119->" 1.111 PIC (10,8,R/W) 1.111 PIC "Connect the test scope probe tip to J119 pin 11." 1.112 OPBR Is the ripple at two times the line frequency <= 1mV 1.112 OPBR and the total peak-to-peak ripple <= 100mV? 1.113 JMPF 1.821 1.114 HEAD POWER SUPPLY RIPPLE: J119 pin 1 1.115 PIC 2445ADJ4 (8,43,R/W) "J119->" 1.115 PIC (10,8,R/W) 1.115 PIC "Connect the test scope probe tip to J119 pin 1." 1.116 OPBR Is the ripple at two times the line frequency <= 2mV 1.116 OPBR and the total peak-to-peak ripple <= 10mV? 1.117 JMPF 1.821 1.118 HEAD CONTROL SETTINGS 1.119 SET VOLTS/DIV CH 1 : .1V 1.119 SET VOLTS/DIV CH 2 : .1V 1.119 SET Input Coupling CH 1 : 1 MOhm GND 1.119 SET Input Coupling CH 2 : 1 MOhm GND 1.120 SET Channels : 1;Off 2;On 3;Off 4;Off 1.120 SET ADD : Off 1.120 SET INVERT : Off 1.120 SET ALT/CHOP : ALT 1.120 SET BW LIMIT : On 1.121 SET A and B SEC/DIV : X-Y 1.121 SET TRIGGER : +, AUTO LVL, VERT, DC 1.121 SET Delta : V and t Off 1.121 SET TRACKING : INDEP 1.121 SET INTENSITY : Visible display 1.121 SET READOUT INTENS : Scale factors off 1.121 SET FOCUS : Best focused display 1.122 HEAD ADJUSTMENT LOCATIONS 1.123 DISP NOTE 1.123 DISP All CRT adjustments (other than the Front Panel 1.123 DISP ASTIC, FOCUS and TRACE ROTATION adjustments) 1.123 DISP are accessed through the High Voltage shield located 1.123 DISP on the left side of the instrument near the rear 1.123 DISP of the CRT. 1.123 DISP The location of each adjustment is indicated on the 1.123 DISP shield. 1.124 HEAD CRT ASTIG PRESET AND GRID BIAS 1.125 DISP Position the dot in the center area of the graticule 1.125 DISP using CH 1 and CH 2 position controls. 1.125 DISP Focus the displayed dot as well as possible using the 1.125 DISP front-panel FOCUS control. 1.126 DISP Adjust ASTIG (front panel) in conjunction with the FOCUS 1.126 DISP control, for the sharpest possible dot. 1.127 SET INTENSITY : Directly left 1.128 PIC 2445ADJ2 (4,58,R/W) "R1878" 1.128 PIC (1,15,R/W) 1.128 PIC "Adjust R1878 (GRID BIAS) for a barely visible dot." 1.129 SET INTENSITY : Fully CCW. 1.130 OPBR Has the dot disappeared? 1.131 JMPF 1.127 1.132 HEAD CONTROL SETTINGS 1.133 SET A and B SEC/DIV : 50us 1.133 SET Delta : t On 1.133 SET INTENSITY : Visible Display 1.134 HEAD CRT TRACE ROTATION AND Y-AXIS ALIGNMENT 1.135 DISP Using the CH 2 Vertical POSITION control, align the 1.135 DISP trace with the center horizontal graticule line. 1.135 DISP Position one of the t cursors to the center 1.135 DISP vertical graticule line using either the or 1.135 DISP the REF OR DLY POS control. 1.136 DISP Adjust TRACE ROTATION (front panel) to align the trace 1.136 DISP with the center horizontal graticule line. 1.137 PIC 2445ADJ2 (4,36,R/W) "R1848" 1.137 PIC (1,3,R/W) 1.137 PIC "Adjust R1848 (Y-Axis Alignment) to align the trace" 1.137 PIC (2,3,R/W) 1.137 PIC "with the center horizontal graticule line." 1.138 HEAD CONTROL SETTINGS 1.139 SET Input Coupling CH 2 : 1 MOhm DC 1.139 SET Delta : V and t Off 1.140 HEAD CRT GEOMETRY 1.141 DISP Connect the CG 5011 Pulse Head to UUT Channel 2. 1.142 5011 10uT -D S 1.143 DISP Use the Horizontal POSITION control to align the time 1.143 DISP markers with the vertical graticule lines. 1.143 DISP 1.143 DISP Use the CH2 POSITION control to align the base of the 1.143 DISP signal with the bottom graticule line. 1.143 DISP 1.143 DISP Set the CH2 VOLTS/DIV switch for at least a 6 division 1.143 DISP vertical display. 1.144 DISP Use the CH2 POSITION CONTROL to set the tops of the time 1.144 DISP markers to graticule center. 1.144 DISP 1.144 DISP Set the CH2 VOLTS/DIV one position clockwise to overscan 1.144 DISP the display. 1.145 PIC 2445ADJ2 (4,53,R/W) "R1870" 1.145 PIC (1,3,R/W) 1.145 PIC "Adjust R1870 for minimum curvature of the time markers" 1.145 PIC (2,3,R/W) 1.145 PIC "across the entire display." 1.146 5011 * S 1.147 DISP Disconnect the PULSE HEAD from the UUT. 1.148 HEAD CONTROL SETTINGS 1.149 SET A and B SEC/DIV : 10us 1.149 SET Input Coupling CH 2 : 50 Ohm DC 1.149 SET VOLTS/DIV CH 2 : .2V 1.149 SET INTENSITY : Midrange 1.150 HEAD CRT EDGE FOCUS 1.151 DISP Connect the 606xx to UUT Channel 2 using a type N to 1.151 DISP BNC adapter and a BNC cable. 1.152 6060 1.6Vpp 100kH -D S 1.153 DISP Center the display on the graticule. 1.154 PIC 2445ADJ2 (4,47,R/W) "R1864" 1.154 PIC (1,3,R/W) 1.154 PIC "Adjust R1864 (EDGE FOCUS), FOCUS (front panel), and" 1.154 PIC (2,3,R/W) 1.154 PIC "ASTIG (front panel) for the most uniform focus over" 1.154 PIC (3,3,R/W) 1.154 PIC "the entire display." 1.155 6060 * S 1.156 DISP Disconnect the 6060B from the UUT. 1.157 HEAD CONTROL SETTINGS 1.158 SET A and B SEC/DIV : 50ns 1.158 SET Input Coupling CH 2 : 1 MOhm GND 1.158 SET INTENSITY : Left of center 1.159 HEAD CRT Z-AXIS TRANSIENT RESPONSE 1.160 DISP Use the horizontal POSITION control to place the 1.160 DISP beginning of the trace within the graticule. 1.161 PIC 2445ADJ2 (4,25,R/W) "R1834" 1.161 PIC (1,3,R/W) 1.161 PIC "Adjust R1834 (Z-AXIS TRANSIENT RESPONSE) for the" 1.161 PIC (2,3,R/W) 1.161 PIC "most uniform intensity across the first division" 1.161 PIC (3,3,R/W) 1.161 PIC "of the display." 1.162 HEAD CONTROL SETTINGS 1.163 SET Delta : V On 1.163 SET VOLTS/DIV CH 2 : .2V 1.163 SET Input Coupling CH 2 : 50 Ohm DC 1.163 SET A and B SEC/DIV : .2us 1.163 SET INTENSITY : Fully CW 1.163 SET READOUT INTENS : Fully CW 1.164 HEAD CRT HIGH DRIVE FOCUS 1.165 6060 1.2Vpp 10MH -D S 1.166 DISP Connect the 606xx to UUT Channel 2 using a type N to 1.166 DISP BNC adapter and a BNC cable. 1.167 6060 1.2Vpp 10MH -D S 1.168 DISP Center the display on the graticule. 1.169 PIC 2445ADJ2 (4,31,R/W) "R1842" 1.169 PIC (1,3,R/W) 1.169 PIC "Adjust R1842 (HIGH DRIVE FOCUS) for the best overall" 1.169 PIC (2,3,R/W) 1.169 PIC "focus of the trace and readout." 1.170 6060 * S 1.171 DISP Disconnect the 6060B from the UUT. 1.172 HEAD CONTROL SETTINGS 1.173 SET VOLTS/DIV CH 1 : .1V 1.173 SET VOLTS/DIV CH 2 : .1V 1.173 SET Input Coupling CH 1 : 1 MOhm DC 1.173 SET Input Coupling CH 2 : 1 MOhm DC 1.174 SET Channels : 1;On 2;Off 3;Off 4;Off 1.174 SET ADD : Off 1.174 SET INVERT : Off 1.174 SET ALT/CHOP : ALT 1.174 SET BW LIMIT : Off 1.175 SET A and B SEC/DIV : .1ms 1.175 SET TRIGGER : +, AUTO LVL, VERT, DC 1.175 SET Delta : t On 1.175 SET TRACKING : INDEP 1.175 SET INTENSITY : Left of center 1.175 SET READOUT INTENS : Visible display 1.175 SET FOCUS : Best focused display 1.176 HEAD DAC REF 1.177 DISP The objective of this step is to make the total range 1.177 DISP of the DAC output voltage (sum of the CCW and CW" 1.177 DISP readings) equal to 2.5V." 1.178 PIC 2445ADJ4 (4,67,R/W) "<-J118" 1.178 PIC (8,28,R/W) 1.178 PIC "Connect the 8842A negative lead to chassis ground." 1.178 PIC (7,28,R/W) 1.178 PIC "Connect the 8842A positive lead to J118 pin 2." 1.179 MESS Rotate the REF OR DLY POS control CCW until the 1.179 MESS 8842A reading remains at a constant value (approximately 1.179 MESS -1.250V). 1.180 8842 1.5V S 2W 1.181 MATH M[1] = MEM1 1.182 JMPT 1.184 1.183 MATH M[1] = 0 - M[1] 1.184 MESS Rotate the REF OR DLY POS control CW until the 1.184 MESS 8842A reading remains at a constant value (approximately 1.184 MESS +1.250V). 1.185 8842 1.5V S 2W 1.186 MATH M[2] = MEM1 1.187 MATH MEM1 = (2.5 - (M[1] + M[2])) / 2 1.188 JMPZ 1.195 0.5U 1.189 MATH MEM = MEM1 + M[2] 1.190 DISP The objective of this step is to make the total range 1.190 DISP of the DAC output voltage (sum of the CCW & CW readings) 1.190 DISP equal to 2.5V. 1.191 PIC 2445ADJ3 (9,43,R/W) "<-R2127" 1.191 PIC (1,3,R/W) 1.191 PIC "Adjust R2127 (DAC REF) while monitoring 8842A reading." 1.191 PIC (2,3,R/W) 1.191 PIC "Press ADV to begin 8842A monitoring." 1.192 MESS Adjust DAC Ref R2127 on the 1.192 MESS control board for an 8840A reading of [MEM]V. 1.193 8842 1.5V S 2W 1.194 JMP 1.179 1.195 MESS 1.196 DISP Disconnect the 8842A from the UUT. 1.197 HEAD CH 1 AND CH 2 INPUT CAPACITANCE 1.198 DISP ********************* NOTE *************************** 1.198 DISP The objective of this adjustment is to match the input 1.198 DISP capacitance of the 50mV per division position of the 1.198 DISP VOLTS/DIV switches to the .1V per division position. 1.198 DISP The front corner of an input square-wave signal is used 1.198 DISP to indicate when the capacitances are matched. 1.199 DISP Connect the CG 5011 Pulse Head to UUT Channel 1 using 1.199 DISP a normalizer (Tek #067-0537-00) and a 50 Ohm terminator. 1.200 SET VOLTS/DIV CH 1 : .1V 1.201 5011 600mVpp 1kH -D E S L 1.202 DISP Center the display on the graticule. 1.202 DISP Set the normalizer for a square front corner over 1.202 DISP approximately the first 40us (0.4 division) of the 1.202 DISP positive portion of the waveform. 1.203 SET VOLTS/DIV CH 1 : 50mV 1.204 5011 300mVpp 1kH -D E S L 1.205 OPBR Is the waveform front corner the same as when CH 1 1.206 OPBR VOLTS/DIV switch was at .1V? 1.207 JMPT 1.210 1.208 PIC 2445ADJ4 (11,12,R/W) "C105->" 1.208 PIC (8,2,R/W) 1.208 PIC "Adjust C105 (CH1 50mV C ADJ) for the same waveform" 1.208 PIC (9,2,R/W) 1.208 PIC "front corner as when CH1 VOLTS/DIV switch was at .1V." 1.209 JMP 1.200 1.210 5011 * S 1.211 DISP Connect the CG 5011 Pulse Head to UUT Channel 2 using 1.211 DISP a normalizer (Tek #067-0537-00) and a 50 Ohm terminator. 1.212 SET Channels : 1;Off 2;On 3;Off 4;Off 1.212 SET VOLTS/DIV CH 2 : .1V 1.213 5011 600mVpp 1kH -D E S L 1.214 DISP Center the display on the graticule. 1.214 DISP Set the normalizer for a square front corner over 1.214 DISP approximately the first 40us (0.4 division) of the 1.214 DISP positive portion of the waveform. 1.215 SET VOLTS/DIV CH 2 : 50mV 1.216 5011 300mVpp 1kH -D E S L 1.217 OPBR Is the waveform front corner the same as when CH 2 1.218 OPBR VOLTS/DIV switch was at .1V? 1.219 JMPT 1.222 1.220 PIC 2445ADJ4 (7,12,R/W) "C205->" 1.220 PIC (4,2,R/W) 1.220 PIC "Adjust C205 (CH2 50mV C ADJ) for the same waveform" 1.220 PIC (5,2,R/W) 1.220 PIC "front corner as when CH2 VOLTS/DIV switch was at .1V." 1.221 JMP 1.212 1.222 5011 * S 1.223 DISP Disconnect the PULSE HEAD from the UUT. 1.224 HEAD CONTROL SETTINGS 1.225 SET VOLTS/DIV CH 1 : .1V 1.225 SET Input Coupling CH 1 : 50 Ohm DC 1.225 SET Channels : 1;On 2;Off 3;Off 4;Off 1.225 SET Delta : V On 1.226 DISP Use the REF OR DLY POS control to position one 1.226 DISP cursor 3 divisions above graticule center. Use the 1.226 DISP control to position the other cursor 3 divisions 1.226 DISP below graticule center. 1.227 DISP Connect the CG5011 Pulse Head to UUT Channel 1. 1.228 5011 800mVpp 1kH -D E S L 1.229 DISP Use the CH1 Vertical and Horizontal POSITION controls 1.229 DISP to center the CH1 display on the graticule. 1.230 PIC 2445ADJ4 (12,38,R/W) "R618->" 1.230 PIC (9,2,R/W) 1.230 PIC "Adjust R618 (VERTICAL READOUT JITTER) for minimum" 1.230 PIC (10,2,R/W) 1.230 PIC "vertical jitter of the readout characters and cursors" 1.231 5011 * S 1.232 DISP Disconnect the PULSE HEAD from the UUT. 1.233 HEAD HORIZONTAL 1.234 DISP ********************NOTE**************************** 1.234 DISP If you did NOT move jumper J501 to the CAL position 1.234 DISP while the line power was OFF, you need to turn the 1.234 DISP power OFF and ON again, with jumper J501 in the CAL 1.234 DISP position. 1.234 DISP The expected prompts will not appear on the UUT! 1.234 DISP **************************************************** 1.235 DISP Simultaneously press in and hold the t and the 1.235 DISP V push buttons, then press and hold the SLOPE 1.235 DISP button. Hold all three buttons in for approximately 1.235 DISP one second, then release them. 1.236 OPBR Does the readout indicate: 1.236 OPBR "DIAGNSTIC. PUSH A/B TRIG TO EXIT"? 1.237 JMPF 1.821 1.238 DISP *********************** NOTE ************************* 1.238 DISP The "menu" of calibration, test, and exercise routines 1.238 DISP are in a loop that may be scrolled through in single 1.238 DISP steps, either forward or backward. Pressing up or down 1.238 DISP on the TRIGGER MODE switch and releasing it respectively 1.238 DISP increments or decrements the menu position by one. As 1.238 DISP each routine is selected, its name appears in the lower 1.238 DISP corner of the readout display. 1.239 DISP *********************** NOTE ************************* 1.239 DISP When performing a calibration step, touch only the 1.239 DISP specific control or controls called out in the 1.239 DISP procedure. Movement of other controls may cause 1.239 DISP erroneous calibration results. 1.240 DISP Scroll to CAL 01 1.241 DISP ********************* CAUTION ************************ 1.241 DISP Upon entering CAL 01, the Input Coupling is automat- 1.241 DISP ically set to 50 Ohm DC and the 50 Ohm OVERLOAD 1.241 DISP protection is disabled. Before starting the procedure, 1.241 DISP make sure any 50 Ohm OVERLOAD condition has been 1.241 DISP cleared. 1.242 DISP *********************** NOTE ************************* 1.242 DISP In this procedure, pressing up and releasing the TRIGGER 1.242 DISP COUPLING switch stores the current calibration parameter 1.242 DISP being set and increments the routine to the next step 1.242 DISP (except where otherwise noted). 1.243 OPBR Press up and release the TRIGGER COUPLING switch. 1.243 OPBR Does the readout indicate: 1.244 OPBR ADJ , (step) 1, 100us (A Sweep), & 1us (B Sweep)? 1.245 JMPF 1.821 1.246 HEAD HORIZONTAL: CAL 01, STEP 1 1.247 DISP Connect the 8842A to the UUT CALIBRATOR OUTPUT. 1.248 8842 0mV N 2W 1.249 MATH MEM1 = MEM 1.250 JMPZ 1.252 1U 1.251 DISP Measurement = [MEM]mV, FAIL 1.252 MATH M[1] = MEM 1.253 DISP Connect the CG 5011 Pulse Head to UUT Channel 1 using 1.253 DISP a 50 Ohm terminator. 1.254 5011 0.1mT -D S 1.255 DISP Set VOLTS/DIV CH 1 for a convenient signal display. 1.255 DISP Set TRACE SEP as needed to separate the A and B Sweeps. 1.255 DISP Set POSITION CH 1 to view both A and B Sweeps. 1.255 DISP Set Horizontal POSITION to position start of trace at 1.255 DISP the left graticule line. 1.256 DISP Adjust REF or DLY POS and to align both 1.256 DISP the intensified zones with the 6th time marker (near 1.256 DISP graticule center) and to superimpose the delayed B Sweep 1.256 DISP time markers. 1.257 OPBR Press up and release the TRIGGER COUPLING switch. 1.257 OPBR Does the readout indicate: 1.257 OPBR ADJ , (step) 2, 100us (A Sweep), & 1us (B Sweep)? 1.258 JMPF 1.821 1.259 HEAD HORIZONTAL: CAL 01, STEP 2 1.260 8842 400mV N 2W 1.261 MATH MEM1 = (MEM - M[1]) - 400 1.262 JMPZ 1.264 2U 1.263 DISP Measurement = [MEM]mV, FAIL 1.264 DISP Disconnect the 8842A from the UUT. 1.265 HEAD HORIZONTAL: CAL 01, STEP 2 1.266 DISP Adjust REF or DLY POS to intensify 2nd time 1.266 DISP marker. 1.266 DISP Adjust to intensify 10th time marker. 1.266 DISP Superimpose delayed B Sweep time markers within 0.2 div. 1.267 OPBR Press up and release the TRIGGER COUPLING switch. 1.267 OPBR Does the readout indicate: 1.267 OPBR ADJ , (step) 3, 300us (A Sweep), & 1us (B Sweep)? 1.268 JMPT 1.272 1.269 OPBR Does the readout indicate: LIMIT (step) 2? 1.270 JMPT 1.267 1.271 JMP 1.260 1.272 HEAD HORIZONTAL: CAL 01, STEP 3 1.273 DISP Adjust REF or DLY POS to intensify 4th time 1.273 DISP marker. 1.273 DISP Adjust to intensify 28th time marker. 1.273 DISP Superimpose delayed B Sweep time markers within 1.2 div. 1.274 OPBR Press up and release the TRIGGER COUPLING switch. 1.274 OPBR Does the readout indicate: 1.274 OPBR ADJ , (step) 4, 100us (A Sweep), & 1us (B Sweep)? 1.275 JMPT 1.279 1.276 OPBR Does the readout indicate: (step) 2? 1.277 JMPT 1.265 1.278 JMP 1.821 1.279 HEAD HORIZONTAL: CAL 01, STEP 4 1.280 5011 0.5uT -D S 1.281 DISP Adjust CCW until no further movement of B Sweep 1.281 DISP display occurs. 1.281 DISP Note the position of the 1st time marker. 1.281 DISP Adjust CW until 2nd time marker moves to left 1.281 DISP and aligns with position previously noted. 1.282 OPBR Press up and release the TRIGGER COUPLING switch. 1.282 OPBR Does the readout indicate: 1.282 OPBR X1, X10 HRZ CTR, (step) 5, 10us (A Sweep), 2 vert 1.282 OPBR cursors? 1.283 JMPF 1.821 1.284 HEAD HORIZONTAL: CAL 01, STEP 5 1.285 5011 10uT -D S 1.286 OPBR Are the two cursors aligned with 2nd & 10th graticule 1.286 OPBR lines? 1.287 JMPT 1.290 1.288 PIC 2445ADJ4 (23,22,R/W) "R860->" 1.288 PIC (20,44,R/W) "<-R801" 1.288 PIC (18,3,R/W) 1.288 PIC "Adjust R860 (x1 GAIN) and R801 (Hrz Ctr) to align" 1.288 PIC (19,3,R/W) 1.288 PIC "the two cursors." 1.289 JMP 1.285 1.290 OPBR Is there 1 time marker per division? 1.291 JMPT 1.294 1.292 PIC 2445ADJ4 (21,43,R/W) "<-R850" 1.292 PIC (19,6,R/W) 1.292 PIC "Adjust R850 (x10 GAIN) for 1 time marker per division." 1.293 JMP 1.290 1.294 OPBR Press up and release the TRIGGER COUPLING switch. 1.294 OPBR Does the readout indicate: 1.294 OPBR ADJ , (step) 6, 10ms (A Sweep), 100us (B Sweep)? 1.295 JMPF 1.821 1.296 HEAD HORIZONTAL: CAL 01, STEP 6 1.297 5011 10mT -D S 1.298 DISP Adjust REF or DLY POS to intensify 2nd time 1.298 DISP marker. 1.298 DISP Adjust to intensify the 10th time marker. 1.298 DISP Superimpose delayed B Sweep time markers within 0.2 div. 1.299 OPBR Press up and release the TRIGGER COUPLING switch. 1.299 OPBR Does the readout indicate: 1.299 OPBR ADJ , (step) 7, 1us (A Sweep), & 10ns (B Sweep)? 1.300 JMPF 1.821 1.301 HEAD HORIZONTAL: CAL 01, STEP 7 1.302 5011 1uT -D S 1.303 DISP Adjust REF or DLY POS to intensify 2nd time 1.303 DISP marker. 1.303 DISP Adjust to intensify the 10th time marker. 1.303 DISP Superimpose delayed B Sweep time markers within 0.2 div. 1.304 OPBR Press up and release the TRIGGER COUPLING switch. 1.304 OPBR Does the readout indicate: 1.304 OPBR ADJ , (step) 8, 2us (A Sweep), & 20ns (B Sweep)? 1.305 JMPF 1.821 1.306 HEAD HORIZONTAL: CAL 01, STEP 8 1.307 5011 2uT -D S 1.308 DISP Adjust REF or DLY POS to intensify 2nd time 1.308 DISP marker. 1.308 DISP Adjust to intensify the 10th time marker. 1.308 DISP Superimpose delayed B Sweep time markers within 0.2 div. 1.309 OPBR Press up and release the TRIGGER COUPLING switch. 1.309 OPBR Does the readout indicate: 1.309 OPBR ADJ , (step) 9, 6.00us (A Sweep), 20ns (B Sweep)? 1.310 JMPT 1.314 1.311 OPBR Does the readout indicate: LIMIT (step) 8? 1.312 JMPT 1.309 1.313 JMP 1.821 1.314 HEAD HORIZONTAL: CAL 01, STEP 9 1.315 DISP Adjust REF or DLY POS to intensify 4th time 1.315 DISP marker. 1.315 DISP Adjust to intensify the 28th time marker. 1.315 DISP Superimpose delayed B Sweep time markers within 1.2 div. 1.316 OPBR Press up and release the TRIGGER COUPLING switch. 1.316 OPBR Does the readout indicate: 1.316 OPBR ADJ , (step) 10, 10us (A Sweep), 100ns (B Sweep)? 1.317 JMPT 1.321 1.318 OPBR Does the readout indicate: (step) 8? 1.319 JMPT 1.306 1.320 JMP 1.821 1.321 HEAD HORIZONTAL: CAL 01, STEP 10 1.322 5011 10uT -D S 1.323 DISP Adjust REF or DLY POS to intensify 2nd time 1.323 DISP marker. 1.323 DISP Adjust to intensify the 10th time marker. 1.323 DISP Superimpose delayed B Sweep time markers within 0.2 div. 1.324 OPBR Press up and release the TRIGGER COUPLING switch. 1.324 OPBR Does the readout indicate: 1.324 OPBR ADJ , (step) 11, 50us (A Sweep), 500ns (B Sweep)? 1.325 JMPF 1.821 1.326 HEAD HORIZONTAL: CAL 01, STEP 11 1.327 5011 50uT -D S 1.328 DISP Adjust REF or DLY POS to intensify 2nd time 1.328 DISP marker. 1.328 DISP Adjust to intensify the 10th time marker. 1.328 DISP Superimpose delayed B Sweep time markers within 0.2 div. 1.329 OPBR Press up and release the TRIGGER COUPLING switch. 1.329 OPBR Does the readout indicate: 1.329 OPBR ADJ , (step) 12, 150us (A Sweep), 1.329 OPBR 500ns (B Sweep)? 1.330 JMPT 1.334 1.331 OPBR Does the readout indicate: LIMIT (step) 11? 1.332 JMPT 1.329 1.333 JMP 1.821 1.334 HEAD HORIZONTAL: CAL 01, STEP 12 1.335 DISP Adjust REF or DLY POS to intensify 4th time 1.335 DISP marker. 1.335 DISP Adjust to intensify the 28th time marker. 1.335 DISP Superimpose delayed B Sweep time markers within 1.2 div. 1.336 OPBR Press up and release the TRIGGER COUPLING switch. 1.336 OPBR Does the readout indicate: 1.336 OPBR ADJ , (step) 13, 1.50us (A Sweep), 1.336 OPBR 10ns (B Sweep)? 1.337 JMPT 1.341 1.338 OPBR Does the readout indicate: (step) 11? 1.339 JMPT 1.326 1.340 JMP 1.821 1.341 HEAD HORIZONTAL: CAL 01, STEP 13 1.342 5011 0.5uT -D S 1.343 DISP Adjust REF or DLY POS to intensify 2nd time 1.343 DISP marker. 1.343 DISP Adjust to intensify the 10th time marker. 1.343 DISP Superimpose delayed B Sweep time markers within 0.2 div. 1.344 OPBR Press up and release the TRIGGER COUPLING switch. 1.344 OPBR Does the readout indicate: 1.344 OPBR ADJ , (step) 14, 10ms (A Sweep), 100us (B Sweep)? 1.345 JMPT 1.349 1.346 OPBR Does the readout indicate: LIMIT (step) 13? 1.347 JMPT 1.344 1.348 JMP 1.821 1.349 HEAD HORIZONTAL: CAL 01, STEP 14 1.350 DISP Adjust REF or DLY POS to intensify 4th time 1.350 DISP marker. 1.350 DISP Adjust to intensify the 28th time marker. 1.350 DISP Superimpose delayed B Sweep time markers within 1.2 div. 1.351 OPBR Press up and release the TRIGGER COUPLING switch. 1.351 OPBR Does the readout indicate: 1.351 OPBR ADJ , (step) 15, 100ns (A Sweep), 1ns (B Sweep)? 1.352 JMPT 1.356 1.353 OPBR Does the readout indicate: (step) 13? 1.354 JMPT 1.341 1.355 JMP 1.821 1.356 HEAD HORIZONTAL: CAL 01, STEP 15 1.357 5011 100nT -D S 1.358 DISP Adjust REF or DLY POS to intensify 2nd time 1.358 DISP marker. 1.358 DISP Adjust to intensify the 10th time marker. 1.358 DISP Superimpose delayed B Sweep time markers within 0.2 div. 1.359 OPBR Press up and release the TRIGGER COUPLING switch. 1.359 OPBR Does the readout indicate: 1.359 OPBR ADJ , (step) 16, 20ns (A Sweep), & 1ns (B Sweep)? 1.360 JMPF 1.821 1.361 HEAD HORIZONTAL: CAL 01, STEP 16 1.362 5011 20nT -D S 1.363 DISP Adjust REF or DLY POS to intensify 2nd time 1.363 DISP marker. 1.363 DISP Adjust to intensify the 10th time marker. 1.363 DISP Superimpose delayed B Sweep time markers within 0.1 div. 1.364 OPBR Press up and release the TRIGGER COUPLING switch. 1.364 OPBR Does the readout indicate: 1.364 OPBR ADJ , (step) 17, 1us (B Sweep)? 1.365 JMPF 1.821 1.366 HEAD HORIZONTAL: CAL 01, STEP 17 1.367 5011 1uT -D S 1.368 DISP Set TRACE SEP fully CW. 1.368 DISP Set the VOLTS/DIV CH 1 as needed for a convenient signal 1.368 DISP display amplitude. 1.369 JMP 1.371 1.370 HEAD HORIZONTAL: CAL 01, STEP 17 1.371 DISP Adjust for 8 markers over the center 8 div. 1.372 OPBR Press up and release the TRIGGER COUPLING switch. 1.372 OPBR Does the readout indicate: 1.372 OPBR ADJ , (step) 18, 3.00us (B Sweep)? 1.373 JMPT 1.377 1.374 OPBR Does the readout indicate: LIMIT (step) 17? 1.375 JMPT 1.372 1.376 JMP 1.821 1.377 HEAD HORIZONTAL: CAL 01, STEP 18 1.378 DISP Adjust for 24 markers over the center 8 div. 1.379 OPBR Press up and release the TRIGGER COUPLING switch. 1.379 OPBR Does the readout indicate: 1.379 OPBR ADJ , (step) 19, 2us (B Sweep)? 1.380 JMPT 1.602 1.381 OPBR Does the readout indicate: (step) 17? 1.382 JMPF 1.821 1.383 HEAD HORIZONTAL: CAL 01, STEP 19 1.384 5011 2uT -D S 1.385 DISP Adjust for 8 markers over the center 8 div. 1.386 OPBR Press up and release the TRIGGER COUPLING switch. 1.386 OPBR Does the readout indicate: 1.386 OPBR ADJ , (step) 20, 6.00us (B Sweep)? 1.387 JMPT 1.391 1.388 OPBR Does the readout indicate: LIMIT (step) 19? 1.389 JMPT 1.386 1.390 JMP 1.821 1.391 HEAD HORIZONTAL: CAL 01, STEP 20 1.392 DISP Adjust for 24 markers over the center 8 div. 1.393 OPBR Press up and release the TRIGGER COUPLING switch. 1.393 OPBR Does the readout indicate: 1.393 OPBR ADJ , (step) 21, 10us (B Sweep)? 1.394 JMPT 1.398 1.395 OPBR Does the readout indicate: (step) 19? 1.396 JMPT 1.383 1.397 JMP 1.821 1.398 HEAD HORIZONTAL: CAL 01, STEP 21 1.399 5011 10uT -D S 1.400 DISP Adjust for 8 markers over the center 8 div. 1.401 OPBR Press up and release the TRIGGER COUPLING switch. 1.401 OPBR Does the readout indicate: 1.401 OPBR ADJ , (step) 22, 50us (B Sweep)? 1.402 JMPF 1.821 1.403 HEAD HORIZONTAL: CAL 01, STEP 22 1.404 5011 50uT -D S 1.405 DISP Adjust for 8 markers over the center 8 div. 1.406 OPBR Press up and release the TRIGGER COUPLING switch. 1.406 OPBR Does the readout indicate: 1.406 OPBR ADJ , (step) 23, 150us (B Sweep)? 1.407 JMPT 1.411 1.408 OPBR Does the readout indicate: LIMIT (step) 22? 1.409 JMPT 1.406 1.410 JMP 1.821 1.411 HEAD HORIZONTAL: CAL 01, STEP 23 1.412 DISP Adjust for 24 markers over the center 8 div. 1.413 OPBR Press up and release the TRIGGER COUPLING switch. 1.413 OPBR Does the readout indicate: 1.413 OPBR ADJ , (step) 24, 500ns (B Sweep)? 1.414 JMPT 1.418 1.415 OPBR Does the readout indicate: (step) 22? 1.416 JMPT 1.403 1.417 JMP 1.821 1.418 HEAD HORIZONTAL: CAL 01, STEP 24 1.419 5011 500nT -D S 1.420 DISP Adjust for 8 markers over the center 8 div. 1.421 OPBR Press up and release the TRIGGER COUPLING switch. 1.421 OPBR Does the readout indicate: 1.421 OPBR ADJ , (step) 25, 1.50us (B Sweep)? 1.422 JMPT 1.426 1.423 OPBR Does the readout indicate: LIMIT (step) 24? 1.424 JMPT 1.421 1.425 JMP 1.821 1.426 HEAD HORIZONTAL: CAL 01, STEP 25 1.427 DISP Adjust for 24 markers over the center 8 div. 1.428 OPBR Press up and release the TRIGGER COUPLING switch. 1.428 OPBR Does the readout indicate: 1.428 OPBR ADJ , (step) 26, 100ns (B Sweep)? 1.429 JMPT 1.433 1.430 OPBR Does the readout indicate: (step) 24? 1.431 JMPT 1.418 1.432 JMP 1.821 1.433 HEAD HORIZONTAL: CAL 01, STEP 26 1.434 5011 100nT -D S 1.435 DISP Adjust for 8 markers over the center 8 div. 1.436 OPBR Press up and release the TRIGGER COUPLING switch. 1.436 OPBR Does the readout indicate: 1.436 OPBR ADJ , (step) 27, 20ns (B Sweep)? 1.437 JMPF 1.821 1.438 HEAD HORIZONTAL: CAL 01, STEP 27 1.439 5011 20nT -D S 1.440 DISP Adjust for 8 markers over the center 8 div. 1.441 OPBR Press up and release the TRIGGER COUPLING switch. 1.441 OPBR Does the readout indicate: 1.441 OPBR ADJ , (step) 29, 1ms (B Sweep)? 1.442 JMPF 1.821 1.443 HEAD HORIZONTAL: CAL 01, STEP 29 1.444 5011 1mT -D S 1.445 DISP Adjust for 8 markers over the center 8 div. 1.446 OPBR Press up and release the TRIGGER COUPLING switch. 1.446 OPBR Does the readout indicate: 1.446 OPBR "DIAGNSTIC. PUSH A/B TO EXIT"? 1.447 JMPF 1.821 1.448 HEAD HORIZONTAL: END 1.449 5011 * S 1.450 DISP Press the A/B TRIG button. 1.450 DISP Disconnect the Pulse Head from the UUT. 1.451 HEAD VERTICAL 1.452 DISP Simultaneously press in and hold the t and the 1.452 DISP V push buttons, then press and hold the SLOPE 1.452 DISP button. Hold all three buttons in for approximately 1.452 DISP one second, then release them. 1.453 OPBR Does the readout indicate: 1.453 OPBR "DIAGNSTIC. PUSH A/B TRIG TO EXIT"? 1.454 JMPF 1.821 1.455 DISP Set the front-panel INTENSITY control to midrange. 1.455 DISP Scroll to CAL 02 1.456 DISP Press up and release the TRIGGER COUPLING switch. 1.456 DISP The instrument will automatically increment through 1.456 DISP steps 100 to 111. 1.457 OPBR Does the readout indicate: 1.457 OPBR CH1 VAR, CH2 POS, (step) 111, and 500mV? 1.458 JMPF 1.821 1.459 HEAD VERTICAL CH 1: CAL 02, STEP 111 1.460 DISP Connect the CG 5011 Pulse Head to UUT Channel 1. 1.461 5011 500mVpp 1kH -D S 1.462 DISP Use the CH 2 POSITION control to vertically position 1.462 DISP the trace to within 1 division of the center graticule. 1.462 DISP Adjust CH 1 POSITION and VOLTS/DIV VAR controls to 1.462 DISP obtain a 10-division horizontal signal. 1.463 OPBR Press up and release the TRIGGER COUPLING switch. 1.463 OPBR Does the readout indicate: 1.463 OPBR MOVE SW, CENTER CH 1 POS, (step) 112, 500mV, and BWL? 1.464 JMPF 1.821 1.465 HEAD VERTICAL CH 1: CAL 02, STEP 112 1.466 DISP Press up and release the TRIGGER COUPLING switch. 1.466 DISP Adjust CH 1 POSITION control carefully until the CH 1 1.466 DISP input coupling "1 MOhm DC" indicator remains 1.466 DISP illuminated. 1.467 OPBR Press up and release the TRIGGER COUPLING switch. 1.467 OPBR Does the readout indicate: (step) 113, 500mV, and BWL? 1.468 JMPF 1.821 1.469 HEAD VERTICAL CH 1: CAL 02, STEP 113 1.470 OPBR Does the readout indicate: (step) 115, 200mV, and BWL? 1.471 JMPT 1.478 1.472 OPBR Does the readout indicate: LIMIT (step) 113? 1.473 JMPT 1.476 1.474 OPBR Does the readout indicate: LIMIT (step) 114? 1.475 JMPF 1.821 1.476 DISP Press down and release the TRIGGER COUPLING switch. 1.477 JMP 1.469 1.478 HEAD VERTICAL CH 1: CAL 02, STEP 115 1.479 5011 200mVpp 1kH -D S 1.480 OPBR Does the readout indicate: (step) 116, 100mV, and BWL? 1.481 JMPT 1.486 1.482 OPBR Does the readout indicate: LIMIT (step) 115? 1.483 JMPF 1.821 1.484 DISP Press down and release the TRIGGER COUPLING switch. 1.485 JMP 1.478 1.486 HEAD VERTICAL CH 1: CAL 02, STEP 116 1.487 5011 100mVpp 1kH -D S 1.488 OPBR Does the readout indicate: (step) 117, 50mV, and BWL? 1.489 JMPT 1.494 1.490 OPBR Does the readout indicate: LIMIT (step) 116? 1.491 JMPF 1.821 1.492 DISP Press down and release the TRIGGER COUPLING switch. 1.493 JMP 1.486 1.494 HEAD VERTICAL CH 1: CAL 02, STEP 117 1.495 5011 50mVpp 1kH -D S 1.496 OPBR Does the readout indicate: (step) 118, 20mV, and BWL? 1.497 JMPT 1.502 1.498 OPBR Does the readout indicate: LIMIT (step) 117? 1.499 JMPF 1.821 1.500 DISP Press down and release the TRIGGER COUPLING switch. 1.501 JMP 1.494 1.502 HEAD VERTICAL CH 1: CAL 02, STEP 118 1.503 5011 20mVpp 1kH -D S 1.504 OPBR Does the readout indicate: (step) 119, 1V, and BWL? 1.505 JMPT 1.510 1.506 OPBR Does the readout indicate: LIMIT (step) 118? 1.507 JMPF 1.821 1.508 DISP Press down and release the TRIGGER COUPLING switch. 1.509 JMP 1.502 1.510 HEAD VERTICAL CH 1: CAL 02, STEP 119 1.511 5011 1Vpp 1kH -D S 1.512 OPBR Does the readout indicate: (step) 120, 10V, and BWL? 1.513 JMPT 1.518 1.514 OPBR Does the readout indicate: LIMIT (step) 119? 1.515 JMPF 1.821 1.516 DISP Press down and release the TRIGGER COUPLING switch. 1.517 JMP 1.510 1.518 HEAD VERTICAL CH 1: CAL 02, STEP 120 1.519 5011 10Vpp 1kH -D S 1.520 OPBR Press up and release the TRIGGER COUPLING switch. 1.520 OPBR Does the readout indicate: 1.520 OPBR MOVE SW, CENTER CH 2 POS, (step) 121, 500V, 500mV, 1.520 OPBR and BWL? 1.521 JMPT 1.526 1.522 OPBR Does the readout indicate: LIMIT (step) 120? 1.523 JMPF 1.821 1.524 DISP Press down and release the TRIGGER COUPLING switch. 1.525 JMP 1.518 1.526 5011 * S 1.527 HEAD VERTICAL CH 2: CAL 02, STEP 121 1.528 DISP Connect the CG 5011 Pulse Head to UUT Channel 2. 1.529 5011 0.5Vpp 1kH -D S 1.530 DISP Press up and release the TRIGGER COUPLING switch. 1.530 DISP Adjust CH 2 POSITION control carefully until the CH 1 1.530 DISP input coupling "1 MOhm DC" indicator remains 1.530 DISP illuminated. 1.531 OPBR Press up and release the TRIGGER COUPLING switch. 1.531 OPBR Does the readout indicate: 1.531 OPBR MOVE SW, CENTER CH 2 POS, (step) 122, 500mV, 500mV, 1.531 OPBR and BWL? 1.532 JMPF 1.821 1.533 HEAD VERTICAL CH 2: CAL 02, STEP 122 1.534 DISP Press up and release the TRIGGER COUPLING switch. 1.534 DISP Adjust CH 2 POSITION control carefully until the CH 1 1.534 DISP input coupling "1 MOhm DC" indicator remains 1.534 DISP illuminated. 1.535 OPBR Press up and release the TRIGGER COUPLING switch. 1.535 OPBR Does the readout indicate: (step) 123, 500mV, 500mV, 1.535 OPBR and BWL? 1.536 JMPF 1.821 1.537 HEAD VERTICAL CH 1: CAL 02, STEP 123 1.538 OPBR Does the readout indicate: (step) 125, 200mV, and BWL? 1.539 JMPT 1.546 1.540 OPBR Does the readout indicate: LIMIT (step) 123? 1.541 JMPT 1.544 1.542 OPBR Does the readout indicate: LIMIT (step) 124? 1.543 JMPF 1.821 1.544 DISP Press down and release the TRIGGER COUPLING switch. 1.545 JMP 1.537 1.546 HEAD VERTICAL CH 1: CAL 02, STEP 125 1.547 5011 0.2Vpp 1kH -D S 1.548 OPBR Does the readout indicate: (step) 126, 100mV, and BWL? 1.549 JMPT 1.554 1.550 OPBR Does the readout indicate: LIMIT (step) 125? 1.551 JMPF 1.821 1.552 DISP Press down and release the TRIGGER COUPLING switch. 1.553 JMP 1.546 1.554 HEAD VERTICAL CH 1: CAL 02, STEP 126 1.555 5011 0.1Vpp 1kH -D S 1.556 OPBR Does the readout indicate: (step) 127, 50mV, and BWL? 1.557 JMPT 1.562 1.558 OPBR Does the readout indicate: LIMIT (step) 126? 1.559 JMPF 1.821 1.560 DISP Press down and release the TRIGGER COUPLING switch. 1.561 JMP 1.554 1.562 HEAD VERTICAL CH 2: CAL 02, STEP 127 1.563 5011 50mVpp 1kH -D S 1.564 OPBR Does the readout indicate: (step) 128, 20mV, and BWL? 1.565 JMPT 1.570 1.566 OPBR Does the readout indicate: LIMIT (step) 127? 1.567 JMPF 1.821 1.568 DISP Press down and release the TRIGGER COUPLING switch. 1.569 JMP 1.562 1.570 HEAD VERTICAL CH 2: CAL 02, STEP 128 1.571 5011 20mVpp 1kH -D S 1.572 OPBR Does the readout indicate: (step) 129, 1V, and BWL? 1.573 JMPT 1.821 1.574 OPBR Does the readout indicate: LIMIT (step) 128? 1.575 JMPF 1.821 1.576 DISP Press down and release the TRIGGER COUPLING switch. 1.577 JMP 1.570 1.578 HEAD VERTICAL CH 2: CAL 02, STEP 129 1.579 5011 1Vpp 1kH -D S 1.580 OPBR Does the readout indicate: (step) 130, 10V, and BWL? 1.581 JMPT 1.586 1.582 OPBR Does the readout indicate: LIMIT (step) 129? 1.583 JMPF 1.821 1.584 DISP Press down and release the TRIGGER COUPLING switch. 1.585 JMP 1.821 1.586 HEAD VERTICAL CH 2: CAL 02, STEP 130 1.587 5011 10Vpp 1kH -D S 1.588 OPBR Press up and release the TRIGGER COUPLING switch. 1.588 OPBR Does the readout indicate: 1.588 OPBR MOVE SW, CENTER CH 2 POS, (step) 131, 10V, [25]10V 1.588 OPBR and BWL? 1.589 JMPT 1.594 1.590 OPBR Does the readout indicate: LIMIT (step) 130? 1.591 JMPF 1.821 1.592 DISP Press down and release the TRIGGER COUPLING switch. 1.593 JMP 1.368 1.594 HEAD VERTICAL CH 2: CAL 02, STEP 131 1.595 DISP Press up and release the TRIGGER COUPLING switch. 1.595 DISP Adjust CH 2 POSITION control carefully until the CH 1 1.595 DISP input coupling "1 MOhm DC" indicator remains 1.595 DISP illuminated. 1.596 DISP Press up and release the TRIGGER COUPLING switch. 1.596 DISP The instrument will automatically increment through 1.596 DISP steps 132 to 142. 1.597 OPBR MOVE SW, CENTER CH 1 POS, (step) 142, 50mV, and BWL? 1.598 JMPF 1.821 1.599 5011 * S 1.600 HEAD VERTICAL CH 1: CAL 02, STEP 142 1.601 DISP Connect the CG 5011 Pulse Head to UUT Channel 1. 1.602 5011 50mVpp 1kH -D S 1.603 DISP Press up and release the TRIGGER COUPLING switch. 1.603 DISP Adjust CH 1 POSITION control carefully until the CH 1 1.603 DISP input coupling "1 MOhm DC" indicator remains 1.603 DISP illuminated. 1.604 HEAD VERTICAL: V Cursors 1.605 DISP Press up and release the TRIGGER COUPLING switch. 1.605 DISP Wait approximately 10 seconds for automatic calibration 1.605 DISP of the V cursors. 1.606 OPBR Does the readout indicate: VERTICAL CENTER GAIN? 1.607 JMPF 1.821 1.608 HEAD VERTICAL CENTER AND GAIN 1.609 OPBR Are there precisely 5 div between horizontal cursors? 1.610 JMPT 1.613 1.611 PIC 2445ADJ4 (16,61,R/W) "<-R638" 1.611 PIC (14,5,R/W) 1.611 PIC "Adjust R638 (GAIN) for precisely 5 divisions between" 1.611 PIC (15,5,R/W) 1.611 PIC "horizontal cursors." 1.612 JMP 1.608 1.613 OPBR Are the cursors aligned with the dotted 0% and 100% 1.613 OPBR graticule? 1.614 JMPT 1.617 1.615 PIC 2445ADJ4 (15,61,R/W) "<-R639" 1.615 PIC (12,3,R/W) 1.615 PIC "Adjust R639 (VERTICAL CENTERING) to center the cursors" 1.615 PIC (13,3,R/W) 1.615 PIC "on the graticule (align the cursors with the dotted" 1.615 PIC (14,3,R/W) 1.615 PIC "0% and 100% graticule lines)." 1.616 JMP 1.613 1.617 OPBR Press up and release the TRIGGER COUPLING switch. 1.618 OPBR Does the readout indicate: 1.618 OPBR "DIAGNSTIC. PUSH A/B TRIG TO EXIT"? 1.619 JMPF 1.821 1.620 HEAD VERTICAL: END 1.621 MESS 1.622 5011 * S 1.623 DISP Press the A/B TRIG button. 1.623 DISP Disconnect the PULSE HEAD from the UUT. 1.624 HEAD TRIGGERING 1.625 DISP Simultaneously press in and hold the t and the 1.625 DISP V push buttons, then press and hold the SLOPE 1.625 DISP button. Hold all three buttons in for approximately 1.625 DISP one second, then release them. 1.626 OPBR Does the readout indicate: 1.626 OPBR "DIAGNSTIC. PUSH A/B TRIG TO EXIT"? 1.627 JMPF 1.821 1.628 DISP Scroll to CAL 03. 1.629 DISP Press up and release the TRIGGER COUPLING switch. 1.629 DISP The instrument will automatically increment through 1.629 DISP steps 201 to 215. 1.630 OPBR Does the readout indicate: CH1, 500mV, and (step) 215? 1.631 JMPF 1.821 1.632 HEAD TRIGGERING CH 1: CAL 03, STEP 215 1.633 DISP Connect the CG 5011 Pulse Head to UUT Channel 1. 1.634 5011 500mVpp 1kH -D S 1.635 OPBR Press up and release the TRIGGER COUPLING switch. 1.635 OPBR Does the readout indicate: CH1, 500mV, and (step) 216? 1.636 JMPF 1.821 1.637 HEAD TRIGGERING CH 1: CAL 03, STEP 216 1.638 OPBR Press up and release the TRIGGER COUPLING switch. 1.638 OPBR Does the readout indicate: CH2, 500mV, and (step) 217? 1.639 JMPF 1.821 1.640 5011 * S 1.641 HEAD TRIGGERING CH 2: CAL 03, STEP 217 1.642 DISP Connect the CG 5011 Pulse Head to UUT Channel 2. 1.643 OPBR Press up and release the TRIGGER COUPLING switch. 1.643 OPBR Does the readout indicate: CH3, 500mV, and (step) 218? 1.644 JMPF 1.821 1.645 5011 * S 1.646 HEAD TRIGGERING CH 3: CAL 03, STEP 218 1.647 DISP Connect the CG 5011 Pulse Head to UUT Channel 3. 1.648 OPBR Press up and release the TRIGGER COUPLING switch. 1.648 OPBR Does the readout indicate: CH3, 2V, and (step) 219? 1.649 JMPF 1.821 1.650 HEAD TRIGGERING CH 3: CAL 03, STEP 219 1.651 5011 2Vpp 1kH -D S 1.652 OPBR Press up and release the TRIGGER COUPLING switch. 1.652 OPBR Does the readout indicate: CH4, 500mV, and (step) 220? 1.653 JMPF 1.821 1.654 5011 * S 1.655 HEAD TRIGGERING CH 4: CAL 03, STEP 220 1.656 DISP Connect the CG 5011 Pulse Head to UUT Channel 4. 1.657 5011 500mVpp 1kH -D S 1.658 OPBR Press up and release the TRIGGER COUPLING switch. 1.658 OPBR Does the readout indicate: CH4, 2V, and (step) 221? 1.659 JMPF 1.821 1.660 HEAD TRIGGERING CH 4: CAL 03, STEP 221 1.661 5011 2Vpp 1kH -D S 1.662 OPBR Press up and release the TRIGGER COUPLING switch. 1.662 OPBR Does the readout indicate: 1.662 OPBR "DIAGNSTIC. PUSH A/B TRIG TO EXIT"? 1.663 JMPF 1.821 1.664 5011 * S 1.665 DISP Disconnect the Pulse Head from the UUT. 1.666 HEAD CH 2 DELAY: ENABLE/DISABLE 1.667 DISP Scroll to CAL 04 and 1.667 DISP press up and release the TRIGGER COUPLING switch. 1.668 ASK+ L T 1.669 ASK- F 1.670 OPBR Does the readout alternately indicate "ENABLED" and 1.670 OPBR "DISABLED" each time the TRIGGER COUPLING switch is 1.670 OPBR presssed up and released? 1.671 JMPF 1.821 1.672 DISP Leave the readout indicating "ENABLED". 1.673 DISP Press and release the A/B TRIG button. 1.674 DISP Connect the CG 5011 Pulse Head to UUT Channel 1 and 2 1.674 DISP using a 5x attenuator and a BNC T. 1.675 HEAD CONTROL SETTINGS 1.676 SET Channels : 1;On 2;On 3;Off 4;Off 1.676 SET VOLTS/DIV CH 1 : 10mV 1.676 SET VOLTS/DIV CH 2 : 10mV 1.676 SET Input Coupling CH 1 : 50ê DC 1.676 SET Input Coupling CH 2 : 50ê DC 1.676 SET A and B SEC/DIV : 10ns 1.676 SET TRIGGER : +, AUTO LVL, CH 1, DC 1.677 MESS Adjust for a 3- to 5-division display amplitude. 1.678 5011 300mVpp 0U 100kH -D E N L 1.679 MESS 1.680 5011 mVpp 100kH -D E S L 1.681 DISP Use the CH 1 and CH 2 POSITION controls to vertically 1.681 DISP overlay the traces near the center of the graticule 1.681 DISP area. 1.681 DISP Set the Horizontal POSITION control to set the rising 1.681 DISP edge of the signal near the center vertical graticule 1.681 DISP line. 1.682 DISP X10 MAG : On 1.682 DISP B SEC/DIV knob : Out 1.683 OPBR Does the readout indicate: CH 2 DLY - TURN ? 1.684 JMPF 1.821 1.685 5011 mVpp 100kH -D E S L 1.686 OPBR Does the control move the leading edge of the 1.686 OPBR CH 2 trace at least 1 div. to either side of the CH 1 1.686 OPBR trace? 1.687 JMPF 1.821 1.688 5011 mVpp 100kH -D E S L 1.689 DISP Adjust control to superimpose the leading edges. 1.690 5011 * S 1.691 DISP Disconnect the PULSE HEAD from the UUT. 1.692 DISP B SEC/DIV knob : In 1.692 DISP X10 MAG : Off 1.693 DISP Simultaneously press in and hold the t and the 1.693 DISP V push buttons, then press and hold the SLOPE 1.693 DISP button. Hold all three buttons in for approximately 1.693 DISP one second, then release them. 1.693 DISP 1.693 DISP Scroll to CAL 04. 1.694 DISP Press up and release the TRIGGER COUPLING switch until 1.694 DISP the readout indicates "DISABLED". 1.695 HEAD TRIGGERING: END 1.696 DISP Press and release the A/B TRIG button. 1.697 PIC 2445ADJ3 (13,26,R/W) "v" 1.697 PIC (1,2,R/W) 1.697 PIC "Return jumper P501 to the NO CAL position" 1.697 PIC (2,2,R/W) 1.697 PIC "(towards front of UUT)." 1.697 PIC (11,24,R/W) "P501" 1.698 HEAD CONTROL SETTINGS 1.699 SET VOLTS/DIV CH 1 : 10mV 1.699 SET VOLTS/DIV CH 2 : 10mV 1.699 SET Input Coupling CH 1 : 50ê DC 1.699 SET Input Coupling CH 2 : 50ê DC 1.700 SET Channels : 1;On 2;Off 3;Off 4;Off 1.700 SET ADD : Off 1.700 SET INVERT : Off 1.700 SET ALT/CHOP : ALT 1.700 SET BW LIMIT : Off 1.701 SET A and B SEC/DIV : 20ns 1.701 SET TRIGGER : +, AUTO LVL, VERT, DC 1.701 SET Delta : V On 1.701 SET TRACKING : INDEP 1.701 SET INTENSITY : Left of center 1.701 SET READOUT INTENS : Right of center 1.701 SET FOCUS : Best focused display 1.702 DISP CH 1 VAR : CCW (unlocked) 1.702 DISP CH 2 VAR : In detent (locked CW) 1.702 DISP A and B SEC/DIV VAR : In detent (locked CW) 1.702 DISP TRIG HOLDOFF : In detent (locked CW, B ENDS A) 1.702 DISP VERT POS : Midrange 1.702 DISP Horz POS : Midrange 1.702 DISP TRIG LEVEL : Midrange 1.703 HEAD DYNAMIC CENTERING 1.704 DISP Set the REF or DLY POS and cursors near 1.704 DISP the 3rd line above and 3rd line below graticule center. 1.704 DISP Rotate the READOUT INTENSITY control from midrange to 1.704 DISP fully CW and note any horizontal and vertical shift that 1.704 DISP occurs in the readout characters. 1.705 PIC 2445ADJ1 (14,17,R/W) "R3407->" 1.705 PIC (15,20,R/W) "R3401->" 1.705 PIC (13,29,R/W) "Adjust R3407 (VERTICAL DYNAMIC CENTERING)" 1.705 PIC (14,29,R/W) 1.705 PIC "to minimize the vertical component of the shift." 1.705 PIC (16,29,R/W)"Adjust R3401 (HORIZONTAL DYNAMIC CENTERING)" 1.705 PIC (17,29,R/W) 1.705 PIC "to minimize the horizontal component of the shift." 1.706 HEAD CRT TERM, HF TRANS RESP, VERT GAIN & CENTERING, JITTER 1.707 DISP Rotate the REF or DLY POS control CCW until the 1.707 DISP RATIO readout is constant. 1.707 DISP Rotate the control until the readout display 1.707 DISP indicates 130.0%. 1.708 OPBR Is one cursor near the bottom horizontal graticule line 1.708 OPBR and the other near the dotted graticule line marked 1.708 OPBR 100(%)? 1.709 JMPF 1.821 1.710 DISP Rotate the REF or DLY POS control until the 1.710 DISP readout displays exactly 100.0%. 1.711 OPBR Are the cursors on or near the dotted graticules lines 1.711 OPBR marked 0% and 100%? 1.712 JMPF 1.821 1.713 DISP Set the CH 1 VAR control locked fully CW. 1.714 DISP ********************* NOTE *************************** 1.714 DISP Care must be taken not to disturb the position of the 1.714 DISP REF or DLY POS and controls during the 1.714 DISP balance of this procedure. If they are accidentlly 1.714 DISP moved, repeat this subprocedure from the beginning. 1.715 HEAD CRT TERMINATION 1.716 DISP Connect the CG5011 Pulse Head to UUT Channel 1 1.716 DISP using a tunnel Diode Pulser (Tek #067-0681-01) and a 1.716 DISP 5x attenuator. 1.717 5011 250mVpp 100kH -D E S L 1.718 DISP Rotate the pulser Trigger control CW (from a fully CCW 1.718 DISP position) until a stable signal first appears on the 1.718 DISP graticule. Display amplitude will be approximately 5 1.718 DISP divisions. The TRIGGER LEVEL control may need to be 1.718 DISP adjusted to abtain a stable display. 1.719 DISP ********************* NOTE *************************** 1.719 DISP As a guide when performing the following adjustments, 1.719 DISP optimum performance is achieved when the CH 1 and CH 2 1.719 DISP step response aberrations are <=4% when using 10mV/ 1.719 DISP division deflection factors (<=0.2 division on a 5- 1.719 DISP division signal). 1.720 PIC 2445ADJ1 (10,14,R/W) "R1301->" 1.720 PIC (12,4,R/W) 1.720 PIC "Adjust R1301 (CRT TERMINATION) for best flat top" 1.720 PIC (13,4,R/W) 1.720 PIC "approximately 5ns behind the rising edge of the" 1.720 PIC (14,4,R/W) 1.720 PIC "waveform. The adjustment is accessible through a" 1.720 PIC (15,4,R/W) 1.720 PIC "hole in the top cover plate. Squeezing the output" 1.720 PIC (16,4,R/W) 1.720 PIC "leads of the termination inductors (LR1513 and" 1.720 PIC (17,4,R/W) 1.720 PIC "LR1514) towards each other will reduce the spike" 1.720 PIC (18,4,R/W) 1.720 PIC "that may be present approximately 6ns behind the" 1.720 PIC (19,4,R/W) 1.720 PIC "leading edge." 1.721 HEAD HIGH FREQUENCY TRANSIENT RESPONSE 1.722 5011 250mVpp 100kH -D E S L 1.723 PIC 2445ADJ4 (12,62,R/W) "<-R403" 1.723 PIC (13,61,R/W) "<-C404" 1.723 PIC (15,23,R/W) 1.723 PIC "Adjust C404 (TRANS RESP) and R403 alternately" 1.723 PIC (16,23,R/W)"for the best flat-top on the first 10ns of" 1.723 PIC (17,23,R/W) "the positive portion of the waveform." 1.724 MATH M[1] = 2 1.725 HEAD VERT GAIN & CENTERING 1.726 PIC 2445ADJ4 (16,61,R/W) "<-R638" 1.726 PIC (15,61,R/W) "<-R639" 1.726 PIC (18,4,R/W) 1.726 PIC "Adjust R638 (VERTICAL GAIN) and R639 (VERTCAL" 1.726 PIC (19,4,R/W) 1.726 PIC "CENTERING) to vertically center the cursors precisely" 1.726 PIC (20,4,R/W) 1.726 PIC "5 divisions apart (align with the dotted 0% and 100%" 1.726 PIC (21,4,R/W) 1.726 PIC "graticule lines)." 1.727 5011 * S 1.728 HEAD CONTROL SETTINGS 1.729 SET Delta : V and t Off 1.729 SET A and B SEC/DIV : 20ns 1.730 MATH MEM1 = M[1] - 2 1.731 JMPZ 1.734 1.732 SET Channels : 1;On 2;Off 3;Off 4;Off 1.733 JMP 1.735 1.734 SET Channels : 1;Off 2;On 3;Off 4;Off 1.735 HEAD HIGH FREQUENCY TRANSIENT RESPONSE 1.736 MATH MEM = M[1] 1.737 DISP Connect the CG5011 Pulse Head to UUT Channel [MEM] 1.737 DISP using a tunnel Diode Pulser (Tek #067-0681-01) and a 1.737 DISP 5x attenuator. 1.738 5011 250mVpp 100kH -D E S L 1.739 PIC 2445ADJ4 (12,62,R/W) "<-R403" 1.739 PIC (13,61,R/W) "<-C404" 1.739 PIC (15,23,R/W) 1.739 PIC "Adjust C404 (TRANS RESP) and R403 alternately" 1.739 PIC (16,23,R/W) 1.739 PIC "for the best flat-top on the first 10ns of" 1.739 PIC (17,23,R/W) 1.739 PIC "the positive portion of the waveform." 1.740 5011 * S 1.741 MATH M[1] = -1 * M[1] + 3 1.742 OPBR Have both CH 1 and CH 2 aberrations been minimized? 1.743 JMPF 1.728 1.744 DISP Disconnect the PULSE HEAD from the UUT. 1.745 HEAD CONTROL SETTINGS 1.746 SET Channels : 1;Off 2;On 3;Off 4;Off 1.746 SET A and B SEC/DIV : .2ms 1.747 HEAD BANDWIDTH: CH 2 1.748 DISP Connect the 606xx to UUT Channel 2 using a type N to 1.748 DISP BNC adapter and a BNC cable. 1.749 MESS Adjust the amplitude for 6 divisions. 1.750 6060 60mVpp 1U 100kH -D N 1.751 MESS 1.752 SET A and B SEC/DIV : .1ns 1.753 6060 mVpp 150MH -D S 1.754 OPBR Is the amplitude >= 4.2 divisions? 1.755 6060 * S 1.756 JMPT 1.759 1.757 DISP Disconnect the 606xx from the UUT. 1.757 DISP Compromise the TRANS RESP adjustments to obtain the 1.757 DISP best flat-top with the proper bandwidth. 1.758 JMP 1.728 1.759 HEAD CONTROL SETTINGS 1.760 SET Channels : 1;On 2;Off 3;Off 4;Off 1.760 SET A and B SEC/DIV : .2ms 1.761 HEAD BANDWIDTH: CH 1 1.762 DISP Connect the 606xx to UUT Channel 1 using a type N to 1.762 DISP BNC adapter and a BNC cable. 1.763 MESS Adjust the amplitude for 6 divisions. 1.764 6060 60mVpp 1U 100kH -D N 1.765 MESS 1.766 SET A and B SEC/DIV : .1ns 1.767 6060 mVpp 150MH -D S 1.768 OPBR Is the amplitude >=4.2 divisions? 1.769 6060 * S 1.770 DISP Disconnect the 606xx from the UUT. 1.771 JMPT 1.774 1.772 DISP Compromise the TRANS RESP adjustments to obtain the 1.772 DISP best flat-top with the proper bandwidth. 1.773 JMP 1.728 1.774 HEAD CONTROL SETTINGS 1.775 SET A and B SEC/DIV : 1ms 1.775 SET Channels : 1;On 2;Off 3;Off 4;Off 1.775 SET Delta : V On 1.776 HEAD JITTER 1.777 DISP Connect the CG 5011 Pulse Head to UUT Channel 1. 1.778 DISP Use the REF or DLY POS control to position one 1.778 DISP cursor 3 divisions above graticule center and use the 1.778 DISP control to position the other cursor 3 divisions 1.778 DISP below graticule center. 1.779 5011 80mVpp 1kH -D E S L 1.780 DISP Use the CH1 Vertical and the Horizontal POSITION 1.780 DISP controls to center the CH1 display on the graticule. 1.781 PIC 2445ADJ4 (12,38,R/W) "R618->" 1.781 PIC (9,2,R/W) 1.781 PIC "Adjust R618 (VERTICAL READOUT JITTER) for minimum" 1.781 PIC (10,2,R/W) 1.781 PIC "vertical jitter of the readout characters and cursors" 1.782 HEAD CONTROL SETTINGS 1.783 SET Delta : t On 1.784 HEAD JITTER 1.785 DISP Using the REF or DLY POS control, position the 1.785 DISP cursors to the 2nd and 10th graticule lines. 1.786 DISP X10 MAG : On 1.787 PIC 2445ADJ4 (18,41,R/W) "<-R805" 1.787 PIC (15,4,R/W) 1.787 PIC "Adjust R805 (HORIZONTAL READOUT JITTER) for minimum" 1.787 PIC (16,4,R/W) 1.787 PIC "horiz jitter of the readout characters and cursors." 1.788 5011 * S 1.789 DISP X10 MAG : Off 1.790 DISP Disconnect the PULSE HEAD from the UUT. 1.791 HEAD CONTROL SETTINGS 1.792 SET Input Coupling CH 1 : 1 MOhm AC 1.792 SET Input Coupling CH 2 : 1 MOhm AC 1.793 HEAD CH 1 AND CH 2 DC BALANCE 1.794 OPBR Press up momentarily and release the CH 1 and CH 2 1.794 OPBR Input Coupling switches simultaneously. 1.794 OPBR 1.794 OPBR Does a moving dot replace the normal display for 1.794 OPBR approximately 20 seconds, then the display returned to 1.794 OPBR normal? 1.795 JMPF 1.821 1.796 OPBR Is there less than 0.2-division + 0.5mV vertical trace 1.796 OPBR shift when the CH 1 VOLTS/DIV switch is rotated through 1.797 OPBR all of its settings? 1.798 JMPF 1.821 1.799 HEAD CONTROL SETTINGS 1.800 SET Channels : 1;Off 2;On 3;Off 4;Off 1.801 HEAD CH 1 AND CH 2 DC BALANCE 1.802 OPBR Is there less than 0.2-division + 0.5mV vertical trace 1.802 OPBR shift when the CH 2 VOLTS/DIV switch is rotated through 1.802 OPBR all of its settings? 1.803 JMPF 1.821 1.804 HEAD CONTROL SETTINGS 1.805 SET VOLTS/DIV CH 1 : 50mV 1.805 SET Input Coupling CH 1 : 50 Ohm DC 1.805 SET A and B SEC/DIV : X-Y 1.805 SET Channels : 1;On 2;Off 3;Off 4;Off 1.806 HEAD X-Y PHASING 1.807 DISP Connect the 606xx to UUT Channel 1 using a type N to 1.807 DISP BNC adapter and a BNC cable. 1.808 MESS Adjust the amplitude for 6 divisions. 1.809 6060 300mVpp 0U 1MH -D N 1.810 MESS 1.811 6060 mVpp 1MH -D S 1.812 DISP Use the CH1 POSITION control to vertically center the 1.812 DISP on the graticule. 1.813 PIC 2445ADJ4 (17,38,R/W) "<-C118" 1.813 PIC (15,10,R/W) 1.813 PIC "Adjust C118 (X-Y PHASING) for no opening in the" 1.813 PIC (16,10,R/W) 1.813 PIC "elipse." 1.814 MESS Adjust the amplitude for 6 divisions. 1.815 6060 300mVpp 0U 2MH -D N 1.816 MESS 1.817 OPBR Is the horizontal opening in the elipse ó0.3 divisions 1.817 OPBR measured at the center horizontal graticule line? 1.818 6060 * S 1.819 DISP Disconnect the 6060B from the UUT. 1.820 JMP 1.822 1.821 DISP FATAL ERROR: Calibration Aborted! 1.822 HEAD CONCLUSION OF THE PROCEDURE 1.823 DISP Disconnect all leads from the calibration system first 1.823 DISP and then from the oscilloscope. 1.823 DISP Switch off the oscilloscope and disconnect it from the 1.823 DISP line power. 1.823 DISP Re-install the cover. 1.824 END