VTI Instruments Corp.
APPENDIX B
90
Sub-Sample
Delay
Data
Timestamp
Trigger
Timestamp
First
Sample
Trigger Event
Figure B-6-1: Sub-sample Trigger Delay
AC
C
OUPLING
F
ILTER
When the analog signal is measured in AC coupling mode, the analog AC coupling, high-pass filter
adds non-linear phase. This delay can be significant, and the amount of delay is frequency
dependent. See Module Information section for the AC coupling filter phase performance.
T
RANSDUCER
P
HASE
D
ELAY
Additional delay can be introduced by the transducer being used, depending on the transducer
architecture. This may also needed to be considered depending on the measurement accuracy
requirement. This is beyond the scope of this manual. Contact transducer manufacturer for more
information.
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