For the last couple days we've been troubleshooting instrumentation
issues.  We had problems with even simple op-amp circuits not behaving
correctly.  Inverting op-amp circuits not inverting and not having
gain.  Unsure of what the problem was we starting resoldering
surfboards and triple checking connections.  We even swapped out the
oscilloscope to see what the source of the problem was.  Eventually we
found we had a faulty probe.


Now that we're confident of the instrumentation, testing of the CMS
circuit without the relays and without the instrumentation amplifier
is giving this waveform, output in pink, input in yellow (image
attatched).


The output is consistent with the Multisim oscilloscope (image also
attached) output and we will continue testing the circuit, including
the relays and the instrumentation amp.  Also testing of the VVS will
take place tomorrow morning.  Power testing will occur once power
design is finalized and we think we'll have a method to solder that
really small padded surface mount chip.


We should be working in the lab tomorrow morning at 9am our time until
11am, I don't know if that time is convenient for Skype, but we'll be
available if you would like to get a hold of us.


- Matthew Landavazo, Vinayak Ravindran, Chris Yelton