GE EPM 9650/9800 manual VAN VBN VCN Vaux IA IB IC Iaux

occurred between the two captures.

•The next byte is a counter for Consecutive Captures. If programmed to record 4 captures per event, the four captures will have values of 0x000, 0x001, 0x002 and 0x003, respectively, for this byte.

•The next 8 bytes are a Time Stamp of the format above. It is the Timing Point Time Stamp. Since captures may be triggered by events in previous captures, every capture designates a point within itself upon which to base the time for samples within that capture.

•The next byte is the Timing Point millisecond. It is a binary value in the range 0x000 – 0x009, and represents the millisecond of the Timing Point Time Stamp.

•The next byte is unused.

•The next 2 bytes are a signed integer with an index of the point used as the Timing Point. This index always refers to a sample in this capture, regardless of the location of the triggering cycle for this capture.

•The next 32 bytes represent eight, 4-byte Sample Gain Factors. The order of these readings is:

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For EPM 9650s with regular hardware or EPM 9800s, Sample Gain Factors are a four-byte unsigned value with two bytes of fraction, covering a range of 0 – 65535.999985, where each count represents 1/65536 gain.

For EPM 9650s with 300 V hardware, sample Gain Factors are a four byte unsigned value with 15 bits of fraction, covering a range of 0-131071.999969, where each count represents 1/32768 gain.

These gain factors are a multiplicative factor to scale samples, represented in percent of A/D full scale, into secondary units.

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