3156B User Manual
Racal Instrument © 2005
Programming Reference 5-151
triggerDelay
ViReal64
Selects trigger delay value. ri3156B_set_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.
Ri3156b_set(query)_trigger_delay_state
Description
This panel toggles trigger delay ON and OFF.
Note: System delay must always be considered when using an external trigger. System delay is measured from
a valid trigger input to the transition of the first waveform point. It has a fixed period that adds to the
programmed trigger delay value. System delay is 1 sample clock cycle +100ns.
Channel Dependency: Common
C Syntax
ViStatus ri3156b_set_trigger_delay_state (ViSession instrHandle, ViBoolean triggerDelayState)
ViStatus ri3156b_query_trigger_delay_state (ViSession instrHandle, ViBoolean * triggerDelayState)
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.
triggerDelayState
ViBollean
Toggles the trigger delay On and Off
Valid range: 0, 1 (Off, On)
Default: 0
