Maintenance
R&S
®
SMA100B
489
User Manual 1178.3834.02 ─ 03
13.3 Performing Maintenance Tasks
The R&S
SMA100B is accurate due to integrated adjustment procedures, which you
can execute directly on the instrument.
Internal Adjustments
Risk of DUT damage
During internal adjustments, the instrument temporarily applies high power at the RF
output. This high power can destroy a connected DUT (device under test).
Do not start internal adjustments if DUT is connected.
Disconnect the DUT and replace it by a terminating resistor with adequate power rat-
ing. We recommend that you use a 50
Ohm, 10
W or larger terminating resistor.
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
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
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 Maintenance Tasks
