23 Oct 2001
M. Lacasse

CB Com connections 
------------------

* Units connected

* Converter near VME rack on wall 
(rs232[computer to translator] to RS 488 [translator to other CB COMs])

Address   Type of unit
2       7067    A Telescope
3       7067    B Telescope
4       7067    C Telescope
5       7063    Shutters
7       7067    Near shutters, not in use
10      7063    in laser hut, currently not in use

7067 has 7 relays rated at 0.5 amps
7063 has 3 relays rated at 5 amps and 4 digital input lines

Configuration
1) you need to select a serial host
    a) there is a PC-CB COM cable for connection between the PC (Micron) and
        the CB Com units (there is a second connector in this line, make sure
        both are connected.
    b) There is a cable to go between the VME serial card and the CB com unit
        It is Connected to Port 0 of the Serial board.
2) you need power for the CB Com units - there is a power supply to the left of the
    Translator, the orange power cord to this power supply is labeled.
    There is a power switch on the power supply which may or may not be on
    when the unit is disconnected.
3) The power and the communication lines must be connected to each CB COM unit.
    You may want to check for loose wires.  The terminal blocks can be pulled
    out of the CB COM unit so make sure they are securely connected.
4) You need power for the items to be switched.  There is a large (8 outlet) box at 
    each of the telescopes and a smaller 4 outlet box at the shutters and in
    the laser hut.  The channels are marked on the box, the outlet marked
    H is hot - always on.
    !!!  Warning !!!  The 120 volts is tied to these screw terminals.  I have found it to be
    a shocking experience to tighten or loosen the srews with the power on.
5) The connections are as follows
    Telescope
    1   Flip in mirror
    2   Camera power
    3   light
    
    Shutters
    1   fixed beam shutter
    2   Delay 1 shutter
    3   Delay 2 shutter

    Laser Hut
    1   Power to the motors
    2   Power to the laser
    3   Limit override wires
        (enables motion after mechanical switch hit by opening circuit.)