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Multimeter Command Reference 75Chapter 3
:DB:REFerence
CALCulate:DB:REFerence <value>|MIN|MAX stores a relative value in the dB
Relative Register. You must turn on the math operation e.g., execute
CALC:STAT ON before writing to the math register. You can set the relative value
to any number between
±
200dBm (the
MIN and MAX values). The dB reference is
stored in volatile memory.
Example Set the DB Reference Value
CALC:STAT ON
Turn on the math operation.
CALC:DB:REF 60
Sets DB reference to 60 dBm.
CALC:FUNC DB
Select the DB math operation. You can select
the calculate function at any time before or
after enabling the calculate state.
:DB:REFerence?
CALCulate:DB:REFerence? [MIN|MAX] queries dB reference value.
Example Query the DB Reference Value Set for the DB Math Operation
CALC:DB:REF?
Query the DB reference value.
:DBM:REFerence
CALCulate:DBM:REFerence <value>|MIN|MAX selects the dBm reference value.
Choose from:
50, 75, 93, 110, 124, 125, 135, 150, 250, 300, 500, 600 (default), 800,
900, 1000, 1200, or 8000 ohms. MIN = 50
Ω
. MAX = 8000
Ω
. You must turn on the
math operation e.g., execute CALC:STAT ON before writing to the math register.
The dBm reference is stored in non-volatile memory.
Example Set the DBM Reference Value
CALC:STAT ON
Turn on the math operation.
CALC:DBM:REF 135
Sets DBM reference value to 135.
CALC:FUNC DBM
Select the DBM math operation. You can select
the calculate function at any time before or
after enabling the calculate state.
:DBM:REFerence?
CALCulate:DBM:REFerence? [MIN|MAX] queries the dBm reference.
Example Query the DBM Reference Value Set for the DBM Math Operation
CALC:DBM:REF?
Query the DBM reference value.