[Gb-ccb] Cabling for CCB

[Richard Lacasse]

All,

FYI, JD and I went to the receiver room this afternoon to determine the 
cable requirements for connecting the CCB.  Here is a summary of what we 
determined.  Some details still need to be worked out, obviously, but this 
is a reasonable starting point.  If anyone sees any problems with what 
we've listed below, please let us know ASAP.

Thanks,
Rich and JD

-------------------------------------------------
Cable     Required     Cable              Note
           length (ft)  Connectors
-------------------------------------------------
AC           8         16 - 18 AWG          1
                        Spade lugs

DC           15        Multi-conductor      2
                        MIL multi-pin

1 PPS        70        RG223                3
                        BNC male

10 MHz       15        RG223                4
                        BNC male

Rcvr ctrl     ?        4 Shielded tw pr     5
                        CCB end DB15 male
                        Rcvr end ?

Console/JTAG 70        2 Shielded tw pr     6
                        CCB end: DB25 female
                        Rst box end: 2 x DB9

LAN rx rm    70        fiber zip cord       7
                        ST at both ends

LAN servo rm 15        fiber zip cord       8
                        SC at one end
                        ST at the other

Notes:

1 - From box attached to ceiling of receiver room to power supply plate. 
Box was designed by Bob Simon.

2 - From power supply plate to CCB front panel.
     Determine required minimum wire gauge from nominal voltage drop
     at normal operating currents.  Need connector part #

3 - From "back room" 1 PPS distribution chassis to cable
     trays, to turret, to CCB.

4 - From 10 MHz distributor on turret to CCB

5 - Need additional info for receiver end.
     4 twisted pairs with and overall shield should be adequate.

6 - Need two individually shielded twisted pairs for reset signals.
     Other signals will be on a short pigtail coming out of the same
     backshell.  Cable goes to Reset Box in the back room.

7 - From back room to cable trays to turret to CCB

8 - Need to use two unused fibers between the servo room and rx rm
     because none of the fibers in the rx rm presently carry 100 Mbit
     ethernet.
     Presently, the following are unused:
     Rx Rm           Servo Rm
     BLK tube        BLK tube
       BLK
       RED
       ORG             ORG
       BLU             BLU
       VIO             VIO
     YEL tube        YEL tube
       RED             RED
       WHI             WHI
     Red tube        Red tube
       RED             RED
       BLK             BLK