Racal Instruments 3156B, Руководство пользователя

Страница: 267 / 385

3156B User Manual
Racal Instrument © 2005 Programming Reference 5-115
hopDwellTimeList
ViReal64[]
Points to an array of dwell time values. Each dwell time is
associated with a different frequency hop and therefore,
the array size must match the number of frequency hops.
NOTE
: Dwell time is programmed in units of
μ
s
(microsecond). For example, to program 1.37ms dwell
time, enter the value as follows: 1370
Valid range: 0.5 to 21e6 (
μ
s)
Default: 0.5
Return Values
Displays the return status of the function call. If the function was successful, it will return a status of
VI_SUCCESS, otherwise it will return an error code. Passing the error code into the function
"ri3156B_error_message()" will return a string describing the error.
Ri3156b_apply_hop_waveform
Description
Programs the generator to output frequency hops. This command lets you specify all parameters to execute the
frequency hop mode, amplitude, offset and marker frequency It also sets frequency hops to be the active
waveform mode.
Channel Dependency: Independent
C Syntax
ViStatus ri3156b_apply_hop_waveform (ViSession instrHandle, ViBoolean hopMode, ViReal64 amplitude,
ViReal64 offset, ViReal64 hopDwellTime, ViInt16 hopMarkerIndex)
Parameters
Name
Variable
Type
Description
hopMode
ViBoolean Selects between two frequency hops options: Fixed dwell
time and Variable dwell time.
Valid range: 0,1
0 – selects fixed dwell time frequency hops mode
1 – selects variable dwell time frequency hops mode
Default: 0
amplitude
ViReal64
Programs the amplitude for the selected function