3
Programming
234
Keysight 53147A/148A/149A Operating and Programming Guide
– Values are returned in the same order as the functions returned by the
FUNCtion:ON?
query.
– If this query executes while a measurement is in progress, the prior
measurement result is returned, if the prior result was not invalidated.
RELATED
FRONT-PANEL
KEYS
None
COMMAND
[:SENSe]:FILTer:FM:AUTO . . . <Boolean>
Turns the instrument’s ability to automatically compensate for frequency
modulation
ON
or
OFF
. (
*RST: ON
)
COMMENTS
– When
FM:AUTO
is
ON
, the instrument automatically detects FM signals and
modifies its measurement algorithm accordingly.
– Using
FM:AUTO
increases the time required to compute each measurement
but increases the accuracy of FM signal measurements.
RELATED
FRONT-PANEL
KEYS
Shift + Menu
(FM > AUTO | OFF)
COMMAND
[:SENSe]:FREQuency:OFFSet . . . <numeric_value>[<frequency unit>]
Sets a reference frequency for all other absolute frequency settings in the
instrument.
RANGE
The acceptable range for the
<numeric_value>
parameter is 0 to 50 GHz.
UNITS
The offset frequency can be specified in Hz, KHz, or MHz only.
COMMENTS
– This command does not affect the hardware settings of the instrument. It
affects only the entered and displayed frequencies.
– The instrument accepts only six digits of resolution for an offset entry through
this command. For example, the command
FREQ:OFFSet 12345.678912MHz
results in an offset of approximately 12.3456 GHz.
– The coupling equation for this command is:
Entered | Displayed frequency = (Hardware frequency ) + offset
.
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