HP 83751A Programming Manual page 140

Programming Commands
Frequency Subsystem
FREQuency:STEP[:INCRement]
This sets and queries the frequency step size to be used for any node in the
FREQ: tree that allows UP and DOWN as parameters.
*RST setting is automatically calculated from SPAN.
FREQuency:STOP
FREQuency:STOP <num>[freq suffix]lMAXimumlMINimum~UPlDOWN
FREQuency:STOP? [MAXimumIMINimum]
Sets and queries the STOP Frequency. See FREQ:CENTER for more
information.
*RST setting is MAX.
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