DPO7254 Failing SPC  - Page 1
Forum section: electronics / repair

author: Kalinchuk
author_rank: Newbie
timestamp: March 19, 2024, 10:28:24 pm
content: 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 17:59:54SHOWTIME: SPC starting step : Set SPC defaultsSHOWTIME: SPC completed step : Set SPC defaults 00:00:01SHOWTIME: SPC starting step : Get TemperatureSHOWTIME: SPC completed step : Get Temperature 00:00:00SHOWTIME: SPC starting step : Hfd144 safe 50ohm valuesSHOWTIME: SPC completed step : Hfd144 safe 50ohm values 00:00:01SHOWTIME: SPC starting step : A2D linearity calLinearity cal took 5 passesSHOWTIME: SPC completed step : A2D linearity cal 00:00:18SHOWTIME: SPC starting step : Hfd144 Null input currentSHOWTIME: SPC completed step : Hfd144 Null input current 00:00:06SHOWTIME: SPC starting step : Gain Normalize hfd144SHOWTIME: SPC completed step : Gain Normalize hfd144 00:00:02SHOWTIME: SPC starting step : A2D gain/offset pass 1A2D gain 194 - 450; A2D offset 80 - 794SHOWTIME: SPC completed step : A2D gain/offset pass 1 00:00:32SHOWTIME: SPC starting step : Et CalSHOWTIME: SPC completed step : Et Cal 00:00:13SHOWTIME: SPC starting step : Demux Phase CaldigPhaseCal succeededSHOWTIME: SPC completed step : Demux Phase Cal 00:00:03SHOWTIME: SPC starting step : A2D interleaveSHOWTIME: SPC completed step : A2D interleave 00:00:21SHOWTIME: SPC starting step : A2D gain/offset pass 2A2D gain 192 - 449; A2D offset 80 - 793SHOWTIME: SPC completed step : A2D gain/offset pass 2 00:00:14SHOWTIME: SPC starting step : A2D gain/offset pass 3SHOWTIME: SPC completed step : A2D gain/offset pass 3 00:00:00SHOWTIME: SPC starting step : A2D gain/offset cleanupSHOWTIME: SPC completed step : A2D gain/offset cleanup 00:00:00SHOWTIME: SPC starting step : Hfd144 varigain DACSHOWTIME: SPC completed step : Hfd144 varigain DAC 00:00:03SHOWTIME: SPC starting step : LF Comp for M668SHOWTIME: SPC completed step : LF Comp for M668 00:00:03SHOWTIME: SPC starting step : Hfd144 offset DACsSHOWTIME: SPC completed step : Hfd144 offset DACs 00:00:06SHOWTIME: SPC starting step : M668 offset DACsSHOWTIME: SPC completed step : M668 offset DACs 00:00:04SHOWTIME: SPC starting step : Hfd144 stepgainSHOWTIME: SPC completed step : Hfd144 stepgain 00:00:11SHOWTIME: SPC starting step : M668 stepgainSHOWTIME: SPC completed step : M668 stepgain 00:00:12SHOWTIME: SPC starting step : Hfd144 Bandwidth limit gainSHOWTIME: SPC completed step : Hfd144 Bandwidth limit gain 00:00:02SHOWTIME: SPC starting step : Hfd144 offsetSHOWTIME: SPC completed step : Hfd144 offset 00:00:09SHOWTIME: SPC starting step : M668 offsetSHOWTIME: SPC completed step : M668 offset 00:00:05SHOWTIME: SPC starting step : Hfd144 offset gain-correctionSHOWTIME: SPC completed step : Hfd144 offset gain-correction 00:00:40SHOWTIME: SPC starting step : M668 offset gain-correctionSHOWTIME: SPC completed step : M668 offset gain-correction 00:00:41SHOWTIME: SPC starting step : Gain ValidationSHOWTIME: SPC completed step : Gain Validation 00:00:00SHOWTIME: SPC starting step : Trig gain/offset/hysteresis** 1B failed -- no trigger found. **18:04:11:125 caltrig.cpp:calTrigGainOffsetAndHysteresis(123) error calibrating gain/hysteresis on channel 1CAL: SPC returned an error in step Trig gain/offset/hysteresisSHOWTIME: SPC: failed and quit 00:00:10total time 00:04:17CAL: SPC failedDRAM is Mt_ddr2_512M_667Dram Calibration results:-------------------------DramCal has PASSED on all DemuxsDRAM is Mt_ddr2_512M_667Dram Calibration results:-------------------------DramCal has PASSED on all DemuxsdigPhaseCal succeeded

author: m k
author_rank: Super Contributor
timestamp: March 23, 2024, 01:59:19 pm
content: Maybe there is a separated trigger something for SPC.

author: charlyd
author_rank: Frequent Contributor
timestamp: January 30, 2025, 08:19:39 pm
content: keep us updated this is very interresting for other DPO7254 owners too.

author: iAleks
author_rank: Regular Contributor
timestamp: January 30, 2025, 09:38:56 pm
content: Hi! in scope.exe i found:Track and hold TEK011Track and hold HFD201PREAMP TEK04PREAMP TEK010PREAMP TEK026PREAMP HFD200PREAMP M668PREAMP HFD144setLfComp ERROR - use only with HFD144/M668 preampOn my scope DPO7104 (4ADC Stingray board, its similar DPO7254), preamps HFD144 on your scope preamp looks like M668. If im correctly understand level trigger work fine (you apply some signal and change level trigger and scope correctly change center point on monitor), how about some "advanced" trigger, some bus uart, i2c etc./What calidiag.txt show?

author: ThaiGuy
author_rank: Newbie
timestamp: March 17, 2025, 03:39:05 pm
content: Where to check the logs for SPC Failures?