Author Topic: 2nd card/ch T2 trim not close

February 01, 2021, 12:16:00 PM
Read 1778 times

Peter

  • Newbie
  • *
  • Posts: 4
  • Karma: +0/-0
    • View Profile
I connect my DMM as advised to calibrate card1, success. :-)


When I start with ch2/card2 I can't trim T2 to match off/on VAC. It differs at the best around 1 VAC

As is I connect DMM to the back on my lunch box. Else, which TP's on card2 is preferred?

February 01, 2021, 03:57:50 PM
Reply #1

JPK

  • Administrator
  • Hero Member
  • *****
  • Posts: 1118
  • Karma: +37/-0
    • View Profile
On channel 2, the input signal just after unbalancing is on TP6
and the output signal just before re-balancing is on TP7.
You can see this clearly on the schematic.
JPK