CAMAC Progress Report

                     Week Ending: August 10, 2001
                               Week: 28


Tom Folkers:
     1. Spent most of the entire week moving the CAMAC computer 
        equipment and my office  to the basement.
     2. Lots of time spent getting the whole system set up. Including 
        problems getting the tracker/servo computer up and running. I 
        think most of the problems were pilot error, but it just goes 
        to show how complicated this system has become. I think more 
        effort will be needed in labeling and documenting the 
        interconnecting wiring.

Tom Sargent:
     1. Changed the DSP to send index pulse reports whenever it sees 
        the index pulse regardless of what direction it is moving in 
        or whether it uses the index to reset its cycle counters or 
        not.  The servo program on  the Linux host also now copies 
        this information into global memory so other tasks will be 
        able to automate the process of finding the fiducial index and 
        calibrating the telescope position.
     2. We moved from the 4th floor to the basement.  After 
        reconnecting everything, the servo program no longer worked. 
        It turned out to be at least 3 different problems.  First the 
        IRIG driver got confused (possibly by being started without 
        the IRIG signal in place) and needed to be reloaded.  Second 
        we had some cables switched around. We're trying to fix the 
        labeling and documentation to prevent this.  Thirdly, I 
        believe the 16-bit DAC just got into a confused state and 
        needed to be powered off and on again. 
     3. Added to servo an automatic sanity check of the DSP's 
        dynamically computed correction factors.  This is performed 
        every 20 seconds.  If the offsets, gains or phase error get 
        out of range, it will generate warning messages. 
     4. Did some long over due reformatting of position report and 
        correction report print outs.

Pete Hubbard:
     1. Parts that were machined picked up from shop. Started mounting 
        the power supply and fuse holder with line filter for power 
        input. Also back panel connectors and Mux board.
     2. Bringing up Tracker after the move to the new lab. Problems 
        with booting, only unipolar out of D/A board. The servo can't 
        find lock when  passing through source position.
     3. Made a BNC to LEMO cable to allow D/A output to feed one of 
        the 12 bit A/D channels for  starting the tracker servo's 
        course position.
     4. Made a differential output source for testing each channel of 
        the Mux chassis. The Mux chassis has all channels working 
        properly in the lab.

Dave Ashby:
     1. No Report.