278 Agilent X-Series Signal Generators SCPI Command Reference
Arb Commands
Dual ARB Subsystem–N5172B/82B ([:SOURce]:RADio:ARB)
:GENerate:TEST:WAVeforms
Supported N5172B/82B
[:SOURce]:RADio:ARB:GENerate:TEST:WAVeforms
This command recreates the arb waveform test files into BBG (waveform) memory (WFM1). When
this command is sent to the instrument, the SINE_TEST_WFM and RAMP_TEST_WFM files are
regenerated.
Example
:RAD:ARB:GEN:TEST:WAV
:HEADer:CLEar
Supported N5172B/82B
[:SOURce]:RADio:ARB:HEADer:CLEar
This command clears the header information from the file header used by this modulation format (i.e.
all file header fields are set to unspecified).
Key Entry Clear Header
Remarks A waveform must be selected for this command to function.
:HEADER:NOISe:RMS[:OVERride]
Supported N5172B/82B
[:SOURce]:RADio:ARB:HEADER:NOISe:RMS:OVERride "<file_name>",<value>|UNSPecified
[:SOURce]:RADio:ARB:HEADER:NOISe:RMS:OVERride? "<file_name>"
This command sets the value of the waveform’s I and Q RMS (root mean square) for noise.
The RMS is used strictly for calculating the relative power of the noise in the specified header. The
RMS is specified in normalized linear units with |+1| or |–1| as full scale on I or Q, therefore the
largest RMS that can be specified is the square root of 2 (1.414213562). If the value is unspecified,
then the waveform file header’s RMS is used.
This value is useful if you wish to have the noise be relative to only a portion of the waveform, such
as a pilot channel, or be relative to only a single carrier that is mixed with other carriers.
For setting the header’s RMS value, see “:HEADer:RMS” on page 279.
"<file_name>" This variable names the waveform file to which the RMS value will be applied.
The file name variable can designate a file in the WFM1, NVWFM, or SEQ
directories. For information on the file name syntax, refer to “File Name
Variables” on page 13.
<value> This variable is the user–measured RMS noise value for the specified carrier.
UNSPecified Sets RMS as unspecified, which causes the general RMS value to be used for
calculating the relative noise power.
Example
:RAD:ARB:HEADER:NOISe:RMS:OVER "WFM1:Sine_Wave",.835
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