Siemens 9810 Series, User Manual, Page: 156 / 218

Power quality
Wform Log register
(trigger record)
1 record triggered
2 Pre-trigger Records 6 Post-trigger Records
Waveform log set is 2 + 1 + 6 = 9
Depth
Buffer Depth
4 x 9
= 36
16 x 9
= 144
The waveform log set for the extended waveform capture = [pre-trigger records] +
[actual trigger record] + [post-trigger records]. The total waveform records
captured in this example is 2 + 1 + 6 = 9.
When extended waveform capture is enabled, both Buffer Depth and Depth setup
registers must be set to a positive integer multiple of the waveform log set.
NOTE: The COMTRADE module does not support extended waveform
capture. The COMTRADE files saved are only for the trigger waveform record.
156 7EN05-0390-00