Preparing for Use
R&S
®
SMU200A
36Operating Manual 1007.9845.32 ─ 15
Use the PRESET key to return the instrument to its definite reset/preset state, if the cur-
rent setup is not anymore relevant.
To customise the start settings, use the "File" dialog.
Rebooting the instrument
Press the STANDBY key for approx. 5 s. to reboot the instrument, if the software stops
unexpectedly.
2.3.4.3 Function Check
The signal generator automatically monitors the main functions when the instrument is
switched on and continuously during operation.
A detected fault is indicated by a "ERROR" message displayed in the info line together
with a brief error description. For in-depth identification of the error, press the INFO key.
In response, a description of the error(s) is displayed.
For more information, refer to chapter 9, "Error Messages", on page 829.
Additionaly to the automatic monitoring, the R&S SMU offers the following capabilities to
ensure correct functioning:
●
Internal Adjustments
Press the SETUP key and select "System > Internal Adjustments" to access the dia-
log for preforming and configuring of the adjustments settings. A maximum level
accuracy can be obtained, for instance.
●
Selftest
A selftest is provided for service purposes. The selftest is a protected test procedure,
which can be accessed if protection level 1 is disabled.
●
Test points
If required for service purposes, internal test points can be queried. This test is a
protected test procedure, which can be accessed if protection level 4 is disabled. The
corresponding procedure is described in the Service Manual.
2.3.4.4 Default Settings
When the instrument is switched on, it is not the preset state that is active, but rather the
instrument state that was set before the instrument was switched off. It is also recomen-
ded that you use the PRESET key to return the instrument to its define preset state every
time a new configuration is required or the current setup is not anymore relevant.
The R&S SMU offers a three-stage preset concept:
●
Preset of the settings belonging to a digital standard or associated with one dialog.
Most of the dialog boxes provide a special "Set to Default" button that resets directly
the settings associated to the corresponding dialog, e.g. all digital modulation settings
in the "Custom Digital Mod" dialog.
These settings are identical to those which are called up using the PRESET key.
●
Preset the instrument to a predefined state
Putting into Operation
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