The System menu provides functions to return to a defined instrument state, reverse operations, access service functions and define various system-related settings.
|
|
|
The System menu contains the following functions:
System Config opens a dialog to define various system-related settings.
Measurement Wizard calls up a series of dialogs providing a guided standard measurement.
Print opens a submenu to generate a copy of the current screen.
Int. Reference selects the internal reference clock for synchronization.
Ext. Reference selects an external clock signal for synchronization.
GPIB Address opens the numeric entry bar to define the analyzer's GPIB address.
Service Function opens a dialog to access the service functions of the instrument.
Preset performs a preset of all instrument settings (i.e. all open setups) or of the active setup.
Undo reverses the previous operation.
Redo reverses the action of the Undo command.
External Tools opens a submenu with various demo setups and editing tools.
Opens a dialog to define various system-related settings.
The System Config dialog is divided into the following tabs:
The two check boxes in the Messages and Sounds panel switch the instrument messages or acoustic messages on or off. Sounds are generated when the analyzer generates a notice/status message or a warning (alarm sounds) or during calibration. The settings are also valid if the instrument is remote-controlled.
Dialog Transparency varies the transparency of all dialogs on a scale between 0% and 100%. 0% transparency means that dialogs completely hide the diagram area in the background. With a maximum transparency of 100%, the dialogs are still visible but clearly show the underlying traces and display elements.
Keep Measurement Data for >Repeat Cal< causes the raw measurement data of the standards to be stored after the calibration is completed. This function is equivalent to the parameter in the Measure Standardsdialog of the calibration wizard (see detailed description there) but applies to all calibrations.
Automatic Power Reduction for Calibration Unit sets the source power at all test ports to –10 dBm while an automatic calibration using the calibration unit R&S ZV-Z51 or R&S ZV-Z58 is active. Applying this source power to the ports of the calibration unit ensures best accuracy of the automatic calibration. The source power is reset to its original value (e.g. the preset value of 0 dBm) after the calibration is completed. The automatic power reduction can be deactivated in case that the test setup introduces a large attenuation.
No of Sliding Match Positions defines the maximum number of different positions to be measured if a sliding match standard (sliding load) is used for calibration. The different positions appear in the Measure Standardsdialog of the calibration wizard. A sliding match calibration is valid after three calibration sweeps at different match positions; however, calibration sweeps at additional positions can still improve the accuracy. In general 4 to 6 positions are recommended.
The tab specifies whether a Preset affects the Active Setup or all open setups (Instrument). A preset does not change any of the properties listed in the Reset tab of the System Config dialog.
In the Preset Configuration panel, it is possible to specify whether the Preset command will perform a factory preset or restore the settings stored to a user preset file. A user preset file is an arbitrary setup (.zvx) file, to be stored using the File –Save...command. If the current user preset file is not found (e.g. because it was deleted or moved), the analyzer performs a factory preset.
In remote control, a user-defined preset
must be initiated using the commands in the SYSTem:PRESet:USER...
subsystem. *RST and SYSTem:PRESet always restore the factory preset settings.
Sets a channel-dependent four-bit binary value to control four independent output signals at the USER CONTROL connector (lines 8, 9, 10, 11). The output signals are 3.3 V TTL signals which can be used to differentiate between up to 16 independent analyzer states. For an application example refer to the detailed remote control description. Setting the channel bits does not change the analyzer state.
Provides several buttons to reset global instrument settings and properties. Global settings (e.g. the data related to global resources) are not affected by an instrument Preset.
The
Use Default Directories button is inactive
in the current firmware version.
Provides an input field for the option key code supplied with each option. A new software option for the network analyzer is enabled by entering the option key and pressing Install as described in the dialog.
Alternatively, it is possible to load the option key from the option key (*.xml) file. Use one of the following methods:
Copy the *.xml file to the root directory of a floppy disk or memory stick accessible from your analyzer and press Install.
Copy the *.xml file to the directory C:\Rohde&Schwarz\Nwa of the analyzer's hard disk and press Install.
You
can use several *.xml files in order to enable several options simultaneously.
*.xml files on the storage medium that are no option key files are ignored.
Specifies the GPIB Language and an ID String for the analyzer, to be queried via *IDN?.
If the DEFAULT language is activated, the factory ID string Rohde&Schwarz,ZVB<Max. Freq.-Ports>Port,<Serial_no>,<FW_Version> (e.g. Rohde&Schwarz,ZVB8-4Port,1145101010100001,1.70.5) is set. The bit order for transferred binary data is normal (FORMat:BORDer NORMal).
If the PNA language is activated, the an Agilent-compatible ID string is set. The bit order for transferred binary data is swapped.
The ID string can be changed or reset.
Transferring
options from one analyzer to another
|
Remote control |
|
|
Remote control |
|
|
Remote control |
|
|
Remote control |
Configures external power meters with their connection type and device address. The analyzer supports external R&S NRP-Z sensors as power meters, to be connected via USB interface (the supported types comprise NRP-Z21, NRP-Z11, NRP-Z22, NRP-Z23, NRP-Z24, NRP-Z51, NRP-Z52, NRP-Z55, NRP-Z91).
Use
of external power meters, examples
An external power meter can serve different purposes:
Extended measurement functionality: Each external power meter represents an additional receive port. External generators increase the number of RF output signals of a DUT that the analyzer can measure simultaneously. They can also provide accurate results for signals at inaccurate or unknown frequencies. A typical example is a mixer measurement with an unknown LO signal (and therefore unknown IF output frequency).
Power calibration: An external power meter can measure the exact signal power at an arbitrary point in the test setup (reference plane) and thus provide the reference values for a power calibration. A typical example is a source power calibration for an arbitrary analyzer port.
Configured external power meters can be selected as additional receivers in the Port Configurationand in the power calibration dialogs.
The External Power Meters dialog provides two tables and some additional buttons.
The upper table (Found:) shows all power meters that the analyzer detects to be on line (i.e. connected and switched on). All power meters in the table must have been configured previously, however, they can be deleted in the lower table.
Add v and Add All v buttons copy the selected power meter in the upper table to the lower table so that it is possible to modify the power meter settings and select the power meters as receivers for measurements and power calibrations.
If Auto Config NRP-Zxx is selected, the analyzer automatically configures the first power meter detected at one of the USB ports as Pmtr 1. To detect several connected NRP-Zxx power meters and/or add an NRP-Zxx to the lower table, the automatic configuration must be disabled (no risk of arbitrary assignment of power meter numbers).
The lower table (Configured:) shows all configured power meters with their properties. The properties are defined in the Add/Modify External Power Meter dialog, to be opened by means of the Add Other... or Modify... buttons. All configured power meters are available as additional receivers for measurements and power calibrations.
An icon in the first columns of the tables indicates whether the power meters are currently available. The Found: table and the icons in the Configured: table are automatically updated each time the External Generators dialog is opened (to update explicitly use the Refresh button). The remaining control elements are self-explanatory.
|
Remote control: |
SYSTem:COMMunicate:RDEVice:PMETer<pmet_no>:DEFine |
Selects and configures an external power meter.
The USB power meters supported at present
are configured automatically, all input fields except the optional Name field are disabled. A particular
driver and serial number can be selected via remote control.
|
Remote control: |
Configures external generators with their connection type and device address.
Use
of external generators, examples
An external generator can serve different purposes:
Extended measurement functionality: Each external generator represents an additional source port. External generators increase the number of RF input signals for the DUT. A typical example is a mixer measurement with a 2-port analyzer, where an external generator provides the LO input signal.
Power calibration: An external generator can provide the reference signal for a source or receiver calibration. A typical example is a receiver power calibration using a measured wave b1.
Configured external generators can be selected as additional sources in the More Wave Quantities,More Ratios, Port Configuration,and in the power calibration dialogs.
In order to connect external generators via
GPIB, VXI-11, or other interface types, it is necessary to install the
Virtual Instrument Software Architecture (VISA) library. VISA provides
the programming interface between the hardware and the analyzer's application
environment.
The External Generators dialog provides two tables and some additional buttons.
The upper table (Found:) shows all generators that the analyzer detects to be on-line (i.e. connected and switched on). All generators in the table must have been configured previously, however, they can be deleted in the lower table.
Add v and Add All v buttons copy the selected generator in the upper table to the lower table.
The lower table (Configured:) shows all configured generators with their properties. The properties are defined in the Add/Modify External Generator dialog, to be opened by means of the Add Other... or Modify... buttons. All configured generators are available as additional sources for measurements and power calibrations.
An icon in the first columns of the tables indicates whether the generators are currently available. The Found: table and the icons in the Configured: table are automatically updated each time the External Generators dialog is opened (to update explicitly use the Refresh button). The remaining control elements are self-explanatory.
Two different icons describe the status of a generator:
The generator is on-line (connected, switched
on, ready to be used)
The generator was detected (upper table)
or configured (lower table) but is not on-line
|
Remote control: |
SYSTem:COMMunicate:RDEVice:GENerator<gen_no>:DEFine |
Selects and configures an external generator.
The following control elements select the generator type and its connection:
Name is an optional, arbitrary name associated with the generator. Names appear in the generator lists in the External Generators tab and in the selection dialogs for source signals (measurements and power calibration). If no name is specified, the generators are listed as Gen 1, Gen 2...
Interface selects an interface type for the connection. In addition to the GPIB0 and VXI-11 interfaces (for devices connected to the IEC Bus or LAN1/2 connectors on the rear panel of the analyzer, respectively), the analyzer supports any Other interface supported by the installed VISA library.
GPIB Address or Hostname or IP Address (depending on the Interface selection) contains the address for the current interface type. GPIB addresses must be unique for all devices connected to the GPIB bus (range: 0 to 30), IP addresses must be compatible with the entries in the VISA library. For an Other interface type, the input field contains the Resource String from the installed VISA library.
Driver contains a list of all supported generator driver types. The names in the list are identical with the name of the generator driver files (*.gen) stored in the resources\extdev subdirectory of the analyzer's program directory.
Identify Type sends an identification query (IDN?) to the specified device address in order to identify the generator type and select an appropriate driver file. An error message is displayed if the identification fails.
The following control elements provide hardware-related settings:
Fast Sweep enables or disables the fast sweep mode for external generators that support a frequency and level list mode.
10 MHz Ref switches the analyzer to either internal or external frequency reference.
Fast
sweep mode and conditions
In the list mode the external generator steps through a predefined list of frequencies or signal powers. This mode can be used to accelerate the measurements involving external power meters.
If Fast Sweep is activated, the analyzer compiles a list of the stimulus values (frequencies and powers) in all channels and transfers it to the generator. The list is automatically updated and re-transferred whenever the channel settings are changed.
The analyzer uses a trigger handshake mechanism in order to control the generator's list mode:
The generator sends an EXT GEN BLANK signal to pin no. 22 of the USER CONTROLconnector on the rear panel of the analyzer to show that it is ready to step to the next frequency or power value in the list.
The analyzer transmits an EXT GEN TRG signal at pin no. 21 of the USER CONTROL connector in order to switch the generator to the next point in the list. Afterwards the analyzer waits for the next EXT GEN BLANK signal.
If the number of sweep points exceeds the
maximum number of entries in the list (depending on the generator type),
the analyzer must interrupt the sweep in order to send a new list and
complete the stimulus information. This generally slows down the measurement.
To ensure frequency accuracy and frequency stability in a test setup where different devices represent the signal sources and receivers, it is generally advisable to use a common reference frequency. Accurate frequencies are particularly important if external generators are used for measurements with narrow measurement bandwidths.
A common reference frequency can be established in different ways:
Use the analyzer as master device: Set the analyzer to Internal reference frequency mode and operate all other devices in external reference mode using the reference clock signal from the 10 MHz REF connector on the analyzer's rear panel.
Use another device as master: Set the analyzer to External reference and synchronize it (and all other devices) to the master's reference clock signal, fed in at the 10 MHz REF connector on the analyzer's rear panel.
The 10 MHz REF settings in the Add External Generator dialog are generator-specific and not overwritten by a change of the global Internal Reference / External Referencesettings.
|
Remote control: |
Selects the internal reference clock for synchronization. The analyzer provides a 10 MHz internal reference clock which can be tapped off at the 10 MHz REF connector at the rear of the instrument in order to synchronize other devices, e.g. signal generators or a second network analyzer of the ZVAB family. See also example for reference frequency settings for external generators.
|
Remote control: |
Selects an external reference clock signal for synchronization. The external 10 MHz reference clock signal must be applied to the 10 MHz REF connector at the rear of the instrument. The external reference signal must meet the specifications of the data sheet. The internal reference signal is synchronized to the external signal. See also example for reference frequency settings for external generators.
|
Remote control: |
Opens the numeric entry bar to define the analyzer's GPIB address.
The GPIB address must be in the range between 0 and 30.
|
Remote control: |
Opens a dialog to access the service functions of the instrument. Service functions are password-protected and should be used by a R&S service representative only. Refer to the service manual for more information.
|
Remote control |
SYSTem:PASSword[:CENable] |
Performs a preset of all instrument settings (i.e. all open setups) or of the active setup, depending on the settings in the System Config dialog.
Scope
of the preset and exceptions
A preset may be a factory preset or a user-defined preset and affects either the active setupor all open setups.
It does not change the data related to global resources (cal pool, cal kit data), the position of dialogs, the color scheme of the diagram areas, and the directory and printer settings. All these properties can be reset in the Reset tab of the System Configdialog.
If you activate Preset
by mistake, you can use Undo
in order to restore your previous instrument settings.
|
Remote control: |
*RST; SYSTem:PRESet
(for factory preset) |
Reverses the last action, if possible. Otherwise, Undo! is disabled (grayed).
You can use Undo
even after a Preset,
in order to restore your own instrument settings.
Reverses the action of the Undo command. If Undo was not used before, Redo is disabled (grayed).
Opens a submenu with various demo setups and editing tools:
Mouse Keyboard.lnk: Opens Windows XP's on-screen keyboard.
Demo*.vbs: Shows how to perform the settings for typical measurement tasks.
After running a *vbs file you can modify the demo setup according to your
own needs and store it to a *.zvx file for later reuse.
