TRIGger:DELay
Syntax
TRIGger:DELay {<seconds>|MIN|MAX}
TRIGger:DELay? [{MIN|MAX}]
Description
This command adds a delay between the trigger signal and the first sample taken by the internal DMM (not used for scanning). The may be useful in applications where you want to allow the input to settle before taking a reading or for pacing a burst of readings. The programmed trigger delay overrides the default trigger delay that the instrument automatically adds to the measurement.
Used With:
Internal DMM
Parameters
|
Name |
Type |
Range of Values |
Default Value |
|
<seconds> |
Numeric |
0 to 3600 seconds, with 4 µs resolution. MIN = 0 seconds, MAX = 3600 seconds |
Remarks
The default trigger delay is Automatic; the instrument determines the delay based on function, range, and integration time.
If you specify a trigger delay other than Automatic, that same delay is used for all functions and ranges.
If you have configured the instrument to take more than one reading per trigger (sample count > 1, see SAMPle:COUNt command), the specified trigger delay is inserted between the trigger and the first reading in the sample burst.
The default trigger delays for ac measurements (see TRIGger:DELay:AUTO and ROUTe:CHANnel:DELay:AUTO commands) do not account for worst case settling delays that can occur when measuring ac signals with large dc offsets. Significant measurement errors may result. Use the TRIGger:DELay command or ROUTe:CHANnel:DELay command (for scanned measurements) to allow adequate settling time before the measurement.
The CONFigure and MEASure? commands set the trigger delay to Automatic.
The instrument clears all readings from memory when the triggering configuration is changed.
The instrument selects an automatic trigger delay after a Factory Reset (*RST command). An Instrument Preset (SYSTem:PRESet command) or Card Reset (SYSTem:CPON command) does not change the setting.
Return Format
The query command returns the delay in seconds in the form "+1.00000000E+00".
Examples
The following program segment configures the internal DMM for a ac voltage measurement (no scan list), sets the sample count to 5, and a trigger delay of 2 seconds. When a trigger is received from the selected trigger source, a total of five readings will be returned (the trigger delay is inserted between the trigger and the first reading in the sample burst).
CONF:VOLT:AC
SAMP:COUN 5 !Sample
count = 5
TRIG:DEL 2 !Trigger
delay = 2 seconds
INIT
The following query returns the trigger delay selected.
TRIG:DEL?
Typical Response: +2.00000000E+00