R. Lane, R. McCarthy, B. Bland, T. Sadecki

We attached the BOSEMS for the ITMY to the vacuum feed-through simulator. It took a bit more setup to get the signals on the right channels in the hardware. When we finally saw them we were confused by the fact that we are used to seeing them in the range of 0 to -32000 counts, but we were seeing them railed at +32000. After some debugging by Richard we determined that the hardware seemed to be working. We tried blocking the light in the OSEM, and the signal went to zero. Our conclusion is that the hardware is working in general, and we are getting real signals, although quite large. On the next working day we have plans to compare the control signals in the X1 test stand versus the H2. Richard has a theory that the LED is being driven harder in the H2 hardware (~30mA vs 10mA).