CE2000 bias -- error in service manual ?
Posted 01 July 2013 - 08:11 PM
Schematic and examination of board traces indicate that tp39 corresonds to ch1, tp38 corresponds to ch2.
Can anybody confirm ?
thanks in advance,
Posted 09 July 2013 - 03:54 PM
Posted 10 July 2013 - 11:13 AM
Same measurement in the DC300 series. Schematics and board layouts for CE contradict the service manual.
With no load/no signal, if DC offsets are small enough (~0 mV) then which output is used should not really matter, provided
that measurement causes no appreciable current flow (which should be the case with high impedance DVM) - because there
is no current flow through the emitter leg to output (ie., outputs are not on, no IR drop across 0.2ohm).
Posted 11 July 2013 - 01:24 PM
Sometimes I even use the ground reference as reference to the output rail because of this low offet voltage; Though, it shouldn't be used as standard practice.
Posted 12 July 2013 - 02:02 PM