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6-8
6.6:
Waveform
Trigger
Log
Format
Q
The Waveform Trigger Log stores records in response to High Speed Limit Triggers. It records
descriptive information about records in the Waveform Samples Log.
Q
Record Format: A Record contains 256 Bytes.
• The first eight bytes in each record is the Trigger Time Stamp, representing the time of the last
sample of the triggering cycle. The format of the Time Stamp is:
Byte Format Range Description
0 binary 0 – 99 century
1 binary 0 – 99 year
2 binary 1 – 12 month
3 binary 1 – 31 day
4 binary 0 – 23 hour
5 binary 0 – 59 minute
6 binary 0 – 59 second
7 binary 0 – 100 centisecond
Note: This log does not record records during Test Mode.
• The next 48 bytes are 12 4-byte MSB signed integers representing the RMS values recorded in
the triggering cycle. The order of these readings is:
V
AN
V
BN
V
CN
V
AUX
I
A
I
B
I
C
I
AUX
I
N
V
AB
V
BC
V
CA
There are currently five hookups available, where the following RMS values are computable in each:
3 Element Wye V
AN
, V
BN
, V
CN
, I
A
, I
B
, I
C
, I
AUX
3 CT Delta I
A
, I
B
, I
C
, I
AUX
, V
AB
, V
BC
, V
CA
2 CT Delta I
A
, I
C
, I
AUX
, V
AB
, V
BC
, V
CA
2-1/2 Element Wye V
AN
, V
CN
, I
A
, I
B
, I
C
, I
AUX
Broken Delta V
AN
, V
BN
, V
CN
, I
A
, I
B
, I
C
, I
AUX
, V
AB
, V
BC
, V
CA