User Manual 3155
Programming Reference 4-32
FM:TRIGger:MODE{CONTinuous|TRIGered|GATEd}
Purpose
This command selects one of the FM modes.
• CONTinuous selects continuous modulation
• TRIGered selects triggered modulation
• GATEd selects gated modulation
Parameter type
Discrete
FM:TRIGger:MODE?
Response and default
The 3155 returns CONT, TRIG, or GATE depending on its present setting. Default is CONT.
FM:TRIGger:SLOPe{POSitive|NEGative}
Purpose
This command selects slope sensitivity for the FM trigger input.
• POSitive selects rising edge
• NEGative selects falling edge
Parameter type
Discrete
FM:TRIGger:SLOPe?
Response and default
The 3155 returns POS, or NEG depending on its present setting. Default is POS.
FREQuency{<freq>|MINimum|MAXimum}
Purpose
This command modifies the frequency of the standard waveform in units of Hertz (Hz). It has no affect on ar-
bitrary waveforms.
• <freq> sets the waveform frequency
• <MINimum> sets the waveform frequency to its lowest value
• <MAXimum> sets the waveform frequency to its highest value
Parameter type
Numeric
Parameter range
<freq> 100e-6 to 50e6
FREQuency?
Response and default
The 3155 returns the present frequency value. The returned value is in standard scientific format (for exam-
ple: 100mHz would be returned as 100E-3 – positive numbers are unsigned). Default value is 1e6.
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