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
is set to the result.
l
For the PCT scaling function,
is set to the first meas-
urement.
l
OFF:
specifies the reference for DB scaling,
specifies the reference for PCT scaling.
l
The instrument enables automatic reference selection when the scaling function is enabled (
).
l
This parameter is set to its default value after a Factory Reset (
), an Instrument 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
