Agilent X-Series Signal Generators SCPI Command Reference 329
Arb Commands
Two Tone Subsystem–N5172B/82B ([:SOURce]:RADio:TTONe:ARB)
When the Baseband Frequency Offset is non–zero, the hardware rotator accumulates phase–shift of
the baseband signal. This residual phase remains even after the offset value is returned to zero.
While there is a non–zero residual phase present in the signal, the DAC Over–Range Protection
feature will automatically prevent DAC overrange errors from occurring by scaling the signal down by
1/square root of 2.
:FSPacing
Supported N5172B/82B
[:SOURce]:RADio:TTONe:ARB:FSPacing <freq_spacing>
[:SOURce]:RADio:TTONe:ARB:FSPacing?
This command sets the frequency spacing between the tones.
The variable <freq_spacing> is expressed in hertz (Hz–MHz).
Example
:RAD:TTON:ARB:FSP 10MHZ
The preceding example sets a 10 megahertz frequency spacing for the two tones.
*RST +1.00000000E+004
Key Entry Freq Separation
:HEADer:CLEar
Supported N5172B/82B
[:SOURce]:RADio:TTONe:ARB:HEADer:CLEar
This command clears the header information from the header file used for the two–tone waveform
format. Header information consists of signal generator settings and marker routings associated with
the waveform file. Refer to the User’s Guide for information on file headers.
For this command to function, two tone must be on. To turn two tone on, see “[:STATe]” on
page 341.
Key Entry Clear Header
:HEADer:SAVE
Supported N5172B/82B
[:SOURce]:RADio:TTONe:ARB:HEADer:SAVE
This command saves the header information to the header file used for the two–tone waveform
format. Header information consists of signal generator settings and marker routings associated with
the waveform file. Refer to the User’s Guide for information on header files.
For this command to function, two tone must be on. To turn two tone on, see “[:STATe]” on
page 341.
Key Entry Baseband Frequency Offset Phase Reset
Range 1E1 to 1E8
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