Teledyne LeCroy PXA125 User Manual
Page 162
User Manual PXA125
Programming Reference 4-44
FSK:FREQuency:RASTer
Purpose
This command will set the shift sample clock frequency. When set to operate in FSK mode, the PXA125 will
hop from carrier sample clock frequency to shifted sample clock frequency.
•
Parameter type
Numeric
Parameter range
100e-3 to 100e6 in units of samples per second
FSK:FREQuency:RASTer?
Response and default
The PXA125 will return the present shifted sample clock frequency value. The returned value will be in
standard scientific format (for example: 1KHz would be returned as 1E3 – positive numbers are unsigned).
Default value is 80e3.
FSK:MODE{HOP|RAMPed}
Purpose
This command will select one of the FSK modes.
•
HOP will select non-delayed hops from carrier sclk to shifted sclk
•
RAMPed will select ramped shifts from carrier sclk to shifted sclk
Parameter type
Discrete
FSK:MODE?
Response and default
The PXA125 will return HOP, or RAMP depending on its present setting. Default is HOP.
FSK:RAMP:TIME
Purpose
This command will set the time it takes for the sample clock frequency to ramp up and down from carrier to
shifted frequencies and back. This parameter will affect the PXA125 only when the instrument is set to
operate in ramped FSK mode.
•
Parameter type
Numeric
Parameter range
10e-6 to 1 in units of seconds