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HP 3325B Remote Operation Command Set
interrogating The HP 3325B For Setup Parameters
The value of a setup parameter is read over the HP-IB by sending the parameter HP-IB
followed by a question mark (?). For example, sending the mnemonic FR? sets up
the HP 3325B to respond with the frequency value. HP-IB data is transmitted when the
HP 3325B is addressed to talk. RS-232 data is transmitted 100 ms after the interrogation
Each interrogation response ends with the carriage return (ASCII 13) and line feed
(ASCII 10) characters. Each interrogation may include command mnemonic and suffix,
depending on the setting of the HEAD command.
Remote Operation via RS-232 Interface
Setup parameters include frequency, amplitude, offset, phase, sweep start frequency, sweep
stop frequency, sweep marker frequency, sweep time, modulation source frequency, and
modulation source amplitude.The current value for a setup parameter is displayed on the
HP 3325B front panel if the corresponding HP-IB mnemonic is sent without data and a
suflix. For example, sending the mnemonic AM displays the amplitude value but does not
change the amplitude value.
The units for the displayed value of a setup parameter change to new units if the
corresponding command mnemonic and new suffix are sent without data. For example,
sending the mnemonic AM DB displays the current amplitude value in dBm. Sending the
AM DB command does not change the amplitude value.
If the display is disabled with the DSPO comm^d, the requested value is not
displayed.
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