Rubidiumâ„¢ MG362x1A SeriesLow-Noise RF/Microwave SignalGenerators : Instrument Operation : Standby Mode
 
Standby Mode
Whenever the signal generator is not being used, it should be left connected to the power source and placed in standby mode. Standby mode provides power to keep the internal time base at operating temperature to help ensure specified frequency accuracy and stability when the MG362x1A is placed back into operation.
Note 
During standby mode, the fans run continuously at low speed.
Note 
When switching to operate from standby, allow at least a 30-minute warm-up before beginning signal generator operations.