| Electronics > Repair |
| DPO7254 Failing SPC |
| (1/1) |
| Kalinchuk:
Hello, I have a DPO7254 that fails SPC. All the channels seem to work fine though. I have the errors from the console log and it says there is a missing trigger on channel 1. All channel triggers seem to work fine though. SHOWTIME: SPC: starting 17:59:54 SHOWTIME: SPC starting step : Set SPC defaults SHOWTIME: SPC completed step : Set SPC defaults 00:00:01 SHOWTIME: SPC starting step : Get Temperature SHOWTIME: SPC completed step : Get Temperature 00:00:00 SHOWTIME: SPC starting step : Hfd144 safe 50ohm values SHOWTIME: SPC completed step : Hfd144 safe 50ohm values 00:00:01 SHOWTIME: SPC starting step : A2D linearity cal Linearity cal took 5 passes SHOWTIME: SPC completed step : A2D linearity cal 00:00:18 SHOWTIME: SPC starting step : Hfd144 Null input current SHOWTIME: SPC completed step : Hfd144 Null input current 00:00:06 SHOWTIME: SPC starting step : Gain Normalize hfd144 SHOWTIME: SPC completed step : Gain Normalize hfd144 00:00:02 SHOWTIME: SPC starting step : A2D gain/offset pass 1 A2D gain 194 - 450; A2D offset 80 - 794 SHOWTIME: SPC completed step : A2D gain/offset pass 1 00:00:32 SHOWTIME: SPC starting step : Et Cal SHOWTIME: SPC completed step : Et Cal 00:00:13 SHOWTIME: SPC starting step : Demux Phase Cal digPhaseCal succeeded SHOWTIME: SPC completed step : Demux Phase Cal 00:00:03 SHOWTIME: SPC starting step : A2D interleave SHOWTIME: SPC completed step : A2D interleave 00:00:21 SHOWTIME: SPC starting step : A2D gain/offset pass 2 A2D gain 192 - 449; A2D offset 80 - 793 SHOWTIME: SPC completed step : A2D gain/offset pass 2 00:00:14 SHOWTIME: SPC starting step : A2D gain/offset pass 3 SHOWTIME: SPC completed step : A2D gain/offset pass 3 00:00:00 SHOWTIME: SPC starting step : A2D gain/offset cleanup SHOWTIME: SPC completed step : A2D gain/offset cleanup 00:00:00 SHOWTIME: SPC starting step : Hfd144 varigain DAC SHOWTIME: SPC completed step : Hfd144 varigain DAC 00:00:03 SHOWTIME: SPC starting step : LF Comp for M668 SHOWTIME: SPC completed step : LF Comp for M668 00:00:03 SHOWTIME: SPC starting step : Hfd144 offset DACs SHOWTIME: SPC completed step : Hfd144 offset DACs 00:00:06 SHOWTIME: SPC starting step : M668 offset DACs SHOWTIME: SPC completed step : M668 offset DACs 00:00:04 SHOWTIME: SPC starting step : Hfd144 stepgain SHOWTIME: SPC completed step : Hfd144 stepgain 00:00:11 SHOWTIME: SPC starting step : M668 stepgain SHOWTIME: SPC completed step : M668 stepgain 00:00:12 SHOWTIME: SPC starting step : Hfd144 Bandwidth limit gain SHOWTIME: SPC completed step : Hfd144 Bandwidth limit gain 00:00:02 SHOWTIME: SPC starting step : Hfd144 offset SHOWTIME: SPC completed step : Hfd144 offset 00:00:09 SHOWTIME: SPC starting step : M668 offset SHOWTIME: SPC completed step : M668 offset 00:00:05 SHOWTIME: SPC starting step : Hfd144 offset gain-correction SHOWTIME: SPC completed step : Hfd144 offset gain-correction 00:00:40 SHOWTIME: SPC starting step : M668 offset gain-correction SHOWTIME: SPC completed step : M668 offset gain-correction 00:00:41 SHOWTIME: SPC starting step : Gain Validation SHOWTIME: SPC completed step : Gain Validation 00:00:00 SHOWTIME: SPC starting step : Trig gain/offset/hysteresis ** 1B failed -- no trigger found. ** 18:04:11:125[2456] caltrig.cpp:calTrigGainOffsetAndHysteresis(123) error calibrating gain/hysteresis on channel 1 CAL: SPC returned an error in step Trig gain/offset/hysteresis SHOWTIME: SPC: failed and quit 00:00:10 total time 00:04:17 CAL: SPC failed DRAM is Mt_ddr2_512M_667 Dram Calibration results: ------------------------- DramCal has PASSED on all Demuxs DRAM is Mt_ddr2_512M_667 Dram Calibration results: ------------------------- DramCal has PASSED on all Demuxs digPhaseCal succeeded |
| m k:
Maybe there is a separated trigger something for SPC. |
| charlyd:
If i remember well, this M668 especially is also know from the TDS7404B/CSA7404B series. i have units here with that same sort of error dropping in the logs. so maybe when from older models the problem is known yet it is related somehow? [editted:] i just double checked it s M866 and not M668 |O --- Code: ---0x1641830 (SPC task): cc_loadV: CC_TRIGdcGain3c was 0; clipped 0x1641830 (SPC task): ** M866CompCalibrator 3c failed -- ...wrote cal constant CC_TRIGdcGain3c to 0.000000, failed --- End code --- pitty but at least remarkable... but M668 is a pre-amp from your channel 1 >> check that first i would say |
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