RTC
®
5 PC Interface Board
Rev. 1.9 e
10 Commands And Functions
497
Normal
List Command
set_trigger4
Function starts measurement and storage of the specified signals
(functions similarly to set_trigger, but with 4 instead of 2 simultaneous measurement
signals).
Call
set_trigger4( Period, Signal1, Signal2, Signal3, Signal4 )
Parameters
Period
See set_trigger.
Signal1,
Signal2,
Signal3,
Signal4
See set_trigger.
Comments • See comments for set_trigger.
•Unlike set_trigger, only 2
19
entries per measurement channel are available with
set_trigger4 (automatic termination upon the maximum 2
19
data quadruplet).
• set_trigger(
Period
= 0) and set_trigger4(
Period
= 0) both terminate active data
recording regardless of which command started the data recording. If
set_trigger(
Period
> 0) or set_trigger4(
Period
> 0) is used to start a new measure-
ment, then the measurement value counters will be reset and existing data overwritten
with new measurement values. Also see related comments for set_trigger.
• Data channels 3 and 4 occupy the measurement memory’s upper half, as do correction
files
No
=3 and
No
=4. Therefore, both options can’t be used simultaneously. If
set_trigger4 was preceded by loading correction file
No
=3 or
No
=4 with
load_correction_file, then measurement values will overwrite this area and the correc-
tion file will no longer be available. If loading of correction file
No
=3 or
No
=4 succeeded
after any data quadruplets were recorded with set_trigger4 (or more than 2
19
data
pairs with set_trigger), then the values for channels 3 and 4 (or beyond 2
19
data pairs)
will no longer be available.
• load_program_file reestablishes the initial state of measurement memory.
•As with set_trigger, the get_waveform command can be used to transfer recorded
values to the PC.
RTC
®
4
RTC
®
5new command
Version info Available beginning with version DLL 536, OUT 536
References set_trigger, stop_trigger, get_waveform
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