Agilent E3631A strange output behavior

[alex.forencich]

Well, it seems like all of the traces and footprints are there to support the rev 1 style switching.  Seems like the A pin should just be tied to analog ground so it doesn't go floating away.  I'm actually not sure what that signal is for, I tried tying it to 5v and that turns off the +6 and -25, but sends the +25 to +40.  Perhaps some sort of offset or zero correction?

Anyway, can you possibly get me the component values for R35, R70, R71, R102, R104, R015, R121, and CR27?  These seem to be all of the DNP components that carried over from rev 1.  Thanks!

[alex.forencich]

I shorted the op amp input pin to GND and the drift issue seems to be significantly reduced. There still seems to be a little bit of drift, but it is much less than before.  Now, only the output switching needs to be fixed. 

The only diodes on the board in SOT-23 appear to be BAS16 (single) and BAV99 (dual in series).  The CR27 footprint has one pin NC, so I presume it is a BAS16.  If I can get the values for the missing resistors, then I can get those ordered and installed and hopefully get this thing working correctly. 

[free_electron]

Ill scan the manual today and post it

[alex.forencich]

Any news on this?  I just need the values of R35, R70, R71, R102, R104, R015, R121, and CR27 as these are unpopulated on my board -- I believe these are components that need to be installed to get the output switching working correctly.  It's possible the component identifiers are different between the two versions, though.