3 53220A/53230A Measurements
82 Keysight 53220A/53230A User’s Guide
Standby power to the reference oscillator (Option 010)
Standby power to maintain the operating temperature of the counter’s internal
OCXO reference oscillator (Option 010) is provided by the the line voltage or from
Battery Option 300. Standby power is enabled and disabled using the command:
[SENSe:]ROSCillator:INTernal:POWer:STANdby {OFF|ON}
[SENSe:]ROSCillator:INTernal:POWer:STANdby? (query form)
– On enables standby power which maintains the temperature of the OCXO
when the front panel power button is switched ‘off’ (standby). If line power is
removed from the instrument and Battery Option 300 is installed and enabled,
standby power is supplied by the battery. Battery-supplied standby power is
24 hours.
– Off disables standby power from either the line voltage or battery to the
internal oscillator when the front panel power button is switched ‘off’.
With standby power Off, cycling power on the instrument also cycles power to
the oscillator. This may affect the oscillator’s calibrated accuracy, and stability
may not occur until the specified warm-up time (45 minutes) is reached.
Note that disabling standby power with Battery Option 300 installed and the line
voltage removed will extend the time the battery remains charged.
Standby power is disabled (Off) when the counter is shipped from the factory or
following the SYSTem:SECure:IMMediate command. The current setting is
stored in non-volatile memory and is not changed after a reset (*RST) or
instrument preset (SYSTem:PREset or Preset key).
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