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User Manual LW120
FM:FUNCtion:SHAPe(SINusoid|TRIangle|SQUare|RAMP}
Purpose
This command will select one of the waveform shapes as the active modulating waveform.
•
SINusoid will select sine shape as modulating waveform
•
TRIangle will select triangular shape as modulating waveform
•
SQUare will select square shape as modulating waveform
•
RAMP will select ramp shape as modulating waveform
Parameter type
Discrete
FM:FUNCtion:SHAPe?
Response and default
The LW120 will return SIN, TRI, SQU, or RAMP depending on its present setting. Default is SIN.
FM:FREQuency<FM_freq>
Purpose
This command will set the modulating wave frequency. This parameter affects the LW120 when set to
operate in FM:FUNC:MODE FIX
•
<FM_freq> will set the frequency of the modulating waveform
Parameter type
Numeric
Parameter range
<FM_freq>
1e-3 to 100e6 in units of hertz
FM:FREQuency?
Response and default
The LW120 will return the present modulating waveform frequency value. The returned value will be in
standard scientific format (for example: 100mHz would be returned as 100E-3 – positive numbers are
unsigned). Default value is 1e3.
FM:FREQuency:RASTer(?)<FM_sclk>
Purpose
This command will set the modulating wave sample clock frequency. This parameter affects the LW120
when set to operate in FM:FUNC:MODE USER
•
<FM_sclk> will set the sample clock frequency of the modulating waveform
Parameter type
Numeric
Parameter range
<FM_sclk>
1e-3 to 10e6 in units of samples per second
Remote Programming Reference 4-21
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