Rear Panel Connectors

The rear panel of the analyzer provides various connectors for external devices and control signals.

AUX

Coaxial bidirectional auxiliary connector that can be wired as needed. The AUX connector is not fitted on standard instruments.

Pin No.

Name

Input (I) or
Output (O) or
Bidirectional (B)

Voltage Range

Function

Center conductor

AUX

I or O or B

See data sheet

Can be wired as needed

Outer conductor

GNDA

–

0 V

Analog ground

LAN1 / LAN 2

8-pin connector RJ-45 used to connect the analyzer to a Local Area Network (LAN). The pin assignment of the RF-45 connector supports category 5 UTP/STP (Unshielded/Shielded Twisted Pair) cables.

Pin No.

Name

Input (I) or
Output (O)

Voltage Range

1

INPUT RECEIVE DATA (+)

I

+2.5 V

2

INPUT RECEIVE DATA (–)

I

–2.5 V

3

OUTPUT TRANSMIT DATA (+)

O

+2.5 V

6

OUTPUT TRANSMIT DATA (–)

O

–2.5 V

The other pins are not used.

USB

Double Universal Serial Bus connector of type A (master USB), used to connect e.g a keyboard, mouse or other pointing devices, the Calibration Unit (accessory R&S ZV-Z51/-Z52 or R&S ZV-Z58), a printer or an external storage device (USB stick, CD-ROM drive etc.).

The length of passive connecting USB cables should not exceed 1 m. The maximum current per USB port is 500 mA.

Pin No.

Name

Input (I) or
Output (O) or
Bidirectional (B)

Voltage Range

Function

1

+5.2VD

–

+5.2V

Supply voltage (rt)

2

USBD0M

B

TTL

Data D– (ws)

3

USVD0P

B

 

Data D+ (gn)

4

GNDD

–

0 V

Digital ground (sw)

5

+5.2VD

–

+5.2V

Supply voltage (rt)

6

USBD1M

B

TTL

Data D– (ws)

7

USBD1P

B

 

Data D+ (gn)

8

GNDD

–

0 V

Digital ground (sw)

10 MHz REF

Coaxial BNC connector used as an input or output for the 10 MHz reference clock signal.  

The function of the 10 MHz REF connector depends on the Int. Reference or Ext. Reference setting in the System menu:

Pin No.

Name

Input (I) or
Output (O) or
Bidirectional (B)

Voltage Range

Function

Center conductor

FR_REF_10_OUT/IN

B

See data sheet

Reference frequency

Outer conductor

GNDA

–

0 V

Analog ground

DC MEAS

Two inputs for DC measurements. The connectors are of the same type but specified for different input voltage ranges, see data sheet.

Pin No.

Name

Input (I) or
Output (O)

Function

3

GNDA

-

Analog ground

5

GNDA

-

Analog ground

6

DCMEAS1VPOS
DCMEAS10VPOS

I

Positive 1 V or 10 V DC input
(see data sheet)

8

DCMEAS1VNEG
DCMEAS10VNEG

I

Positive 1 V or 10 V DC input
(see data sheet)

PORT BIAS

Coaxial BNC connectors used to apply an external DC voltage (bias) to the test ports. The PORT BIAS connectors are numbered 1 to 4 (for four-port analyzers).

Each PORT BIAS input is protected by an exchangeable fuse.  

Pin No.

Name

Input (I) or
Output (O) or
Bidirectional (B)

Voltage Range

Function

Center conductor

PORTBIAS1/2/3/4

I

See data sheet

DC input for test port 1/2/3/4

Outer conductor

GNDA

–

0 V

Analog ground

MONITOR

15-pole Sub-Min-D connector used to connect and external VGA monitor.

Pin No.

Name

Input (I) or
Output (O)

Voltage Range

Function

1

RED

O

75 W shielded

Red signal

2

GREEN

O

75 W shielded

Green signal

3

BLUE

O

75 W shielded

Blue signal

4

NC

–

–

–

5

GNDA

–

0 V

Analog ground

6

GNDA

–

0 V

Analog ground

7

GNDA

–

0 V

Analog ground

8

GNDA

–

0 V

Analog ground

9

GNDA

–

0 V

Analog ground

10

GNDA

–

0 V

Analog ground

11

NC

–

–

–

12

DDCDAT

 

 

 

13

 

 

 

 

14

 

 

 

 

15

 

 

 

 

CASCADE

8-pin RJ-45 connectors for future extensions.

USER CONTROL

25-pole D-Sub connector used as an input and output for low-voltage (3.3 V) TTL control signals. Some of the USER CONTROL lines can be controlled via GPIB bus (see CONTrol... and OUTPut... subsystems).

Pin No.

Name

Input (I) or
Output (O)

Function

1

GNDD

-

Digital ground

2

EXT TRG

I

External trigger signal *)

3

GNDD

-

Digital ground

4

BUSY

O

Measurement running

5

GNDD

-

Digital ground

6

READY FOR TRIGGER

O

Measurement terminated, ready for trigger

7

GNDD

-

Digital ground

8

CHANNEL BIT 0

O

Channel-specific bit 0;
see CONTrol:AUXiliary:C[:DATA] and OUTPut<Ch>:UPORt[:VALue]

9

CHANNEL BIT 1

O

Channel-specific bit 1

10

CHANNEL BIT 2

O

Channel-specific bit 2

11

CHANNEL BIT 3

O

Channel-specific bit 3

12

GNDD

-

Digital ground

13

PASS 1

O

Pass/fail result of limit check TTL Out Pass 1

14

PASS 2

O

Pass/fail result of limit check TTL Out Pass 2

15

GNDD

-

Digital ground

16

DRIVE PORT 1

O

Test port 1 is source port (drive port)

17

DRIVE PORT 2

O

Test port 2 is source port (drive port)

18

DRIVE PORT 3

O

Test port 3 is source port (drive port)

19

DRIVE PORT 4

O

Test port 4 is source port (drive port)

20

GNDD

-

Digital ground

21

EXT GEN TRG

O

Control signal for external generator

22

EXT GEN BLANK

I

Handshake signal from external generator

23

GNDD

-

Digital ground

24

FOOT SWITCH 1

I

Control input A

25

FOOT SWITCH 2

I

Control input B

*) Note: Feeding in the external trigger signal via the BNC connector EXT TRIGGER is equivalent.
Both input connectors must not be used simultaneously, because this can cause malfunctions of the analyzer.

 

Important note:

Use only well shielded cables or disconnect the input pins of the USER CONTROL connector in order to avoid spurious input signals which may cause undesirable events.

This is of particular importance for the external trigger input (pin no. 2) if the EXT TRIGGER input is used.   

 

EXT TRIGGER

Coaxial BNC connector used as an input for a low-voltage (3.3 V) TTL external trigger signal.

*) Note: Feeding in the external trigger signal at pin 2 of the D-Sub connector USER CONTROL is equivalent. Both input connectors must not be used simultaneously, because this can cause malfunctions of the analyzer.

Pin No.

Name

Input (I) or
Output (O) or
Bidirectional (B)

Voltage Range

Function

Center conductor

RP_EXT_TRG

I

3.3 V TTL

External trigger signal

Outer conductor

GNDA

–

0 V

Analog ground