38 Agilent N5181A/82A MXG Signal Generators SCPI Command Reference
Basic Function Commands
Frequency Subsystem ([:SOURce])
:FREQuency:REFerence:STATe
Supported All Models
[:SOURce]:FREQuency:REFerence:STATe ON|OFF|1|0
[:SOURce]:FREQuency:REFerence:STATe?
This command enables or disables the frequency reference mode.
When the frequency reference mode is on, subsequent frequency parameters are set relative to the
reference value.
*RST 0
Key Entry Freq Ref Off On
:FREQuency:SPAN
Supported All Models
[:SOURce]:FREQuency:SPAN <num>[<freq_suffix>]|UP|DOWN
[:SOURce]:FREQuency:SPAN? [MAXimum|MINimum]
This command sets the length of the frequency range for a step sweep. Span setting is symmetrically
divided by the selected center frequency and is coupled to the start and stop frequency settings. The
span range is dependent on the signal generator model and option number.
Example
:FREQ:SPAN 100MHz
The preceding example sets the frequency span to 100 megahertz.
*RST +0.0000000000000E+00
Key Entry Freq Span
:FREQuency:STARt
Supported All Models
[:SOURce]:FREQuency:STARt <value><unit>
[:SOURce]:FREQuency:STARt?
This command sets the first frequency point in a step sweep.
Key Entry Freq Start
Remarks Option 501 is specific to the N5181A.
*RST Option 501: +1.0000000000000E+09
Option 503: +3.0000000000000E+09
Option 506: +6.0000000000000E+09
Range Option 501: 100kHz–1GHz
Option 503: 100kHz–3GHz
Option 506: 100kHz–6GHz
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