CAMAC Progress Report

                    Week Ending: September 20, 2002
                               Week: 86


Tom Folkers:

Tom Sargent:
     1. Tried several things to diagnose the problem causing the servo 
        program to sometimes ignore the DSP, mostly centered on system 
        performance.  It turned out the problem was a bug in the 
        inter-process communication that was sending a text message to 
        tscom that was supposed go to the terminal screen. tscom and 
        servo then got stuck in a flurry of error messages back and 
        forth between the 2 programs.  When that was fixed, the 
        problem went away.
     2. Fixed a few other bugs in the servo program.  The ON_SOURCE 
        status bit was erratic.  There was a typo in validate() that 
        was responsible for some of the problem.
     3. Added optical refraction to the pointing model to be used when 
        we do optical pointing.
     4. Small telescope movements (10 or 20 arcseconds) are being done 
        sloppily by servo some of the time. I think I know why, but 
        haven't fixed it yet.

Pete Hubbard:
     1. Worked on cables for focus drive.
     2. SMT to install optical pointing camera.
     3. Changed elevation encoder "0" to use different A/D channel in 
        the Traquiad Adc chassis. This may help with an occasional 
        noise problem.
     4. Sam buss testing chal 28 and 29 in control room. Changed boxes 
        with spare and still oscillation. Then swapped cables and same 
        oscillation occurred. Continue testing to find the problem.

David Forbes: