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Instrument Control
R&S
®
SMB100A
79
Quick Start Guide 1407.0812.62 ─ 20
Confirming parameters with On/Off state
Most of the instrument functions with enabled and disabled states are calculated and
effective only after this functions have been enabled. However, there are functions like
the frequency variation of the reference oscillator for instance, that are immediately set
after confirmation.
► To confirm a parameter with On/Off state, enable the parameter.
8.1.5.8
Restoring the Previous Value
Parameter variations with the rotary knob are immediately set and therefore not rever-
sible.
Normally, values cannot be restored in the case of mouse control because no explicit
confirmation is required in this case and entries are automatically confirmed when the
entry or selection field is exited.
Restoring values
In the case of front-panel control or operation from the keyboard, previous values can
be restored as long as the new value is not confirmed, i.e. the entry is not completed.
► To restore the values, press the [ESC] key.
Restoring values that require confirmation
All settings that are not confirmed with the "Accept" button but require this additional
confirmation can be restored.
1. Press the [ESC] key.
A confirmation query is displayed.
2. Confirm with "OK" to abort the changes.
Select "Cancel" to return to the dialog. The previous selected settings are dis-
played.
Restoring values after an extended calculation has been started
Calculation and setting might require different period of time. Many settings are made
without noticeable calculation times; such operations are indicated by a "BUSY" mes-
sage displayed in the status field of the header section.
Manual Operation