Keysight 34460A, Operating And Service Manual

Page: 225 / 583

CALCulate:SCALe:REFerence:AUTO {ON|1|OFF|0}
CALCulate:SCALe:REFerence:AUTO?
Enables or disables automatic reference selection for the dB scaling functions.
Parameter Typical Return
{ON|1|OFF|0}. Default: ON. 0 (OFF) or 1 (ON)
Enable the DB function with automatic reference selection and use the first measurement as the reference
value:
CALC:SCAL:DBM:REF 50
CALC:SCAL:FUNC DB
CALC:SCAL:REF:AUTO ON
CALC:SCAL:STAT ON
READ?
l
ON: the first measurement made is used as the reference for all subsequent measurements, and auto-
matic reference selection is disabled:
l
For the dB scaling function, the first measurement is converted to dBm, and CALCu-
late:SCALe:DB:REFerence is set to the result.
l
For the PCT scaling function, CALCulate:SCALe:REFerence is set to the first meas-
urement.
l
OFF: CALCulate:SCALe:DB:REFerence specifies the reference for DB scaling, CALCu-
late:SCALe:REFerence specifies the reference for PCT scaling.
l
The instrument enables automatic reference selection when the scaling function is enabled ( CALCu-
late:SCALe:STATe ON ).
l
This parameter is set to its default value after a Factory Reset ( *RST ), an Instrument Preset
( SYSTem:PRESet ), or a change in measurement function.
l
You must execute CALCulate:SCALe:FUNCtion before executing CALCulate:SCALe[:STATe], otherwise
an incompatibility error will be generated.
l
Scaling is set to OFF when you change measurement functions (for example, changing from DCV to
ACV). You must re-enable scaling after changing measurement functions.
SCPI Programming Reference
226
Keysight True
volt
Series Operating and Service Guide