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FSK:FREQuency:RASTer?
Response and default
The 3155 returns the present shifted sample clock frequency value. The returned value is in standard scien-
tific format (for example: 1KHz would be returned as 1E3 – positive numbers are unsigned). Default value is
80e3.
FSK:MODE{HOP|RAMPed}
Purpose
This command selects one of the FSK modes.
•
HOP selects non-delayed hops from carrier sclk to shifted sclk
•
RAMPed selects ramped shifts from carrier sclk to shifted sclk
Parameter type
Discrete
FSK:MODE?
Response and default
The 3155 returns HOP, or RAMP depending on its present setting. Default is HOP.
FSK:RAMP:TIME<time>
Purpose
This command sets the time it takes for the sample clock frequency to ramp up and down from carrier to
shifted frequencies and back. This parameter affects the 3155 only when the instrument is set to operate in
ramped FSK mode.
•
<time> sets the ramp up and down time
Parameter type
Numeric
Parameter range
<time>
10e-6 to 1 in units of seconds
FSK:RAMP:TIME?
Response and default
The 3155 returns the present ramp time value. The returned value is in standard scientific format (for exam-
ple: 10ms would be returned as 10E-3 – positive numbers are unsigned). Default value is 1e-3.
FUNCTion:MODE{FIXed|USER|SEQuence}
Purpose
This command defines the type of waveform that is available at the output connector.
•
<FIXed> selects standard waveforms
•
<USER> selects arbitrary waveforms
•
<SEQuence> selects sequenced waveforms
Programming Reference 4-34
User Manual 3155
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