73xx v285 Firmware Release Notes

The following Known Issues were issues logged against the 73xx family prior to this release. They are verified to be fixed as a result of work done in firmware release v285.

SCR434: MU Outputs do not update properly

MU values do not update properly. If you apply power in single element mode and watch the kW outputs of the MU power meter module, then turn the power source outputs off, the kW MU power meter module registers do not go to 0; they hold their old values.

SCR515: DC Offset in I3 Waveform in second gain stage on v284

When measuring currents 1.6A or above (the second gain stage), all 7350s show a random, often large, DC Offset in the third current phase (I3), waveform capture. The defect is only found on 7350 meters and is confined to I3 current phase, waveform capture only.

SCR516: Meter Serial Number must begin with a P

Currently, 73xx's only accept serial numbers beginning with the letter 'P'. To achieve writing serial numbers with 'L, M or X' prefixes, we have utilized the rebranding equipment which uses a direct memory write 'fill' command, instead of the meter write serial number command 'ms'. Ideally, we should update the FW to accept non 'P' serial numbers.

SCR517: Calibration Pulser Module (CAP) produces extra pulses
If the pulse rate is above 2Hz and the input to the calibration pulser module decreases too rapidly, too many pulses are generated and never compensated for. The result is long-term error.

NOTE: See ION73xx Firmware Revision History  for the entire firmware revision history.