Maintenance
R&S
®
SMW200A
1153User Manual 1175.6632.02 ─ 16
14.3 Performing Maintenance Tasks
The R&S SMW is accurate due to integrated adjustment procedures, which you can
execute directly on the instrument.
Internal Adjustments
Risk of invalid adjustment
Wait until the instrument has reached its operating temperature before you start the
adjustment procedure. The warm-up time is 30 minutes.
Self-calibration routines that require additional (external) equipment are performed at
an authorized Rohde & Schwarz service center.
See also "Protection levels" on page 686.
When to perform adjustments?
We recommend that you perform internal adjustments in the following cases:
●
Before starting any application, that requires a maximum of level and frequency
accuracy
●
When a long period of time has passed since the last adjustments
●
If the ambient temperature of the instrument significantly differs from the one of the
last adjustments.
Additional Information to the Adjustments
You can perform internal adjustments in each path separately, see Chapter 14.3.3,
"Internal Adjustment Settings", on page 1160.
During adjustments, a progress indicator shows the status of the process. If any error
occurs, the process aborts and an error message appears in the info line.
The extent of the adjustments depends on the installed options.
Performing Selftests
The available selftests check internally various functions of the instrument. We recom-
mend that you perform a selftest, if the instrument does not respond as expected.
The accessible selftests are divided in:
●
Testing baseband and BNC connections, see Chapter 14.3.4, "Selftest Connec-
tions Settings", on page 1163
●
Test generator, see Chapter 14.3.5, "Selftest Test Generator Settings (DAC)",
on page 1164
●
Testing the baseband domain, see Chapter 14.3.6, "Selftest Baseband Settings",
on page 1166
Performing Maintenance Tasks
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