Clock Stopping - Stanford Research Systems SIM983 Operation And Service Manual

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2.4 Clock Stopping

If the output or an intermediate stage of the amplifier is driven beyond the
limits in the table on Page vi, large-signal behavior is not guaranteed.
The microprocessor clock of the SIM983 stops if the module is idle,
"freezing" the digital circuitry. The following actions "wake up" the
clock:
1. A power-on.
2. A press of a front-panel button.
3. Activity (send or receive) at the remote interface.
4. An overload.
The clock runs for as long as is necessary to complete a gain or o set
adjustment, or to communicate the output of a query through the
remote interface. However, the clock will remain active for as long
as the overload condition exists.
This default behavior can be modified with the remote com-
mand AWAK. Setting AWAK ON will prevent the clock from stopping.
The module returns to AWAK OFF upon power-on.
Description of Operation
SIM983 Scaling Amplifier