Hi all
It's bad day , to day i desoldering NVRAM of TDS520B and reading content. Everything OK , and i thing backup TDS380 it's good ideal .
After desoldering DS1644 Dallas NVRAM of TDS 380 and read content in progamers . All data i have it's rubbish, i thing nvram fail, after that i solder socket to pcb , and put nvram go back.
Power on TDS380 display calibration fail... I reading server manual and runing step by step, but i don't understand about DC Signal ?
Calibration need DC Signal for DCV Calib . Need -1.5V +1.5V -0.08 + 0.08V and -0.015 , +0.015V.
I try using signal generator have DC out signal and even try DC Power Source ( E3632A ) not help . Allway display fail calibration.
How to calibration TDS380 , what equipmenti need for calibration ?
Link for TDS 380 Service Manual
http://jumi.lut.fi/elko/TDS340A/tds340a_service.pdfThank so much !
Best Regards
Nam Nguyen Hai