Racal Instruments 3156B, Руководство пользователя

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3156B User Manual
Programming Reference 5-156 Racal Instrument © 2005
Ri3156b_set(query)_re_trigger_delay
Description
In trigger run mode, for standard, arbitrary and digital operating modes, this parameter specifies the amount of
time that will elapse between the end of the delivery of the waveform cycle and the beginning of the next
waveform cycle. In burst run mode, this parameter specifies the amount of time that will elapse between the
end of the delivery of the burst cycles and the beginning of the next burst cycles. The re-trigger delay has no
effect on other run modes. In trigger run mode, for Sweep, FM, FSK and Frequency Hops, this parameter
specifies the amount of time that will elapse between the end of the delivery of a modulated waveform cycle
and the beginning of the next modulated waveform cycle. In burst run mode, this parameter specifies the
amount of time that will elapse between the end of the delivery of the burst of modulated cycles and the
beginning of the next burst of modulation cycles. The re-trigger delay has no effect on other run modes.
Re-trigger run mode is initiated from one of the following sources: External (front panel TRIG IN connector),
TTLTRG(n) or ECLTRG0 (backplane trigger lines), or software command (Immediate trigger).
Re-trigger delay can be turned ON and OFF using the ri3156B_set_re_trigger_delay_state () function.
Channel Dependency: Common
C Syntax
ViStatus ri3156b_set_re_trigger_delay (ViSession instrHandle, ViReal64 reTriggerDelay)
ViStatus ri3156b_query_re_trigger_delay (ViSession instrHandle, ViReal64 * reTriggerDelay)
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.
reTriggerDelay
ViReal64
Selects re-trigger delay value.
ri3156B_set_re_trigger_delay (1) function call is required
for this value to affect the operation of the 3156B.
NOTE
: trigger delay time is programmed in units of
μ
s
(microsecond). For example, to program 1.37ms delay
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.