Keysight Technologies 33210A User Manual page 214

4 Remote Interface Reference
– The sum of the carrier frequency and deviation must be less than or equal to
– If the deviation causes the carrier waveform to exceed a frequency boundary
– If you select the External modulating source (FM:SOUR EXT command), the
FM:STATe {OFF|ON}
FM:STATe?
Disable or enable FM. To avoid multiple waveform changes, you can enable
FM after you have set up the other modulation parameters. The default is OFF.
The :STAT? query returns "0" (OFF) or "1" (ON).
– The function generator will allow only one modulation mode to be enabled at a
– The function generator will not allow FM to be enabled at the same time that
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the maximum frequency for the selected function plus 100 kHz (10.1 MHz for
sine and square waveforms). If you attempt to set the deviation to a value that
is not valid, the function generator will automatically adjust it to the maximum
value allowed with the present carrier frequency. From the remote interface,
a "Data out of range" error will be generated and the deviation will be adjusted
as described.
for the current duty cycle (square waveform only), the function generator will
automatically adjust the duty cycle to the maximum value allowed with the
present carrier frequency. From the remote interface, a "Settings conflict" error
will be generated and the duty cycle will be adjusted as described.
deviation is controlled by the ±5V signal level present on the rear-panel
Modulation In connector. For example, if you have set the frequency deviation
to 100 kHz, then a +5V signal level corresponds to a 100 kHz increase in
frequency. Lower external signal levels produce less deviation and negative
signal levels reduce the frequency below the carrier frequency.
time. For example, you cannot enable FM and AM at the same time. When you
enable FM, the previous modulation mode is turned off.
sweep or burst is enabled. When you enable FM, the sweep or burst mode is
turned off.
Keysight 33210A User's Guide