3156B User Manual
Programming Reference 5-166
Racal Instrument © 2005
Sample Data File - Frequency Hops with Variable Dwell Time
1e+6 100 2e+6 2000 3e+3 3e4 4e+6 40 5e+5 5e3 6e+2 6000 7e+1 0.7 8e+6 8e2 9e+3 90 10e+5 1000
Sample Data File - Frequency Hops with Fixed Dwell Time
1e+6 2e+6 3e+3 4e+6 5e+5 6e+2 7e+1 8e+6 9e+3 10e+5
C Syntax
ViStatus ri3156b_load_wavecad_HOP_freq_list_file (ViSession instrHandle, ViString
waveCADHOPFreqListFileName, ViInt16 hopFreqListSize)
Parameters
Name
Variable
Type
Description
instrHandle
ViSession
The Instrument Handle is used to identify the unique
session or communication channel between the driver
and the instrument. If more than one instrument of the
model type is used, this will be used to differentiate
between them. Note that the initialize function may be
used to associate multiple instrument handles with a
single instrument.
waveCADHOPFreqListFileName ViString
Points to a file name already stored in your computer’s
memory. Full path is required. File extension is *.hop for
variable dwell time files and *.hpf for fixed dwell time files.
hopFreqListSize
ViInt16
Defines the number of frequency steps are included in
the frequency hops table. This number must match the
number of frequencies in the data array and in the dwell
times array.
Valid Range: 1 to 4096
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