[Gb-ccb] Re: Cabling for CCB
Bob Simon
bsimon at nrao.edu
Mon Oct 3 09:29:15 EDT 2005
I've assigned WC and WF cable numbers. Make a label and put on both
ends. Reference designators are also noted. AC and DC cables aren't
assigned numbers.
bob..
Richard Lacasse wrote:
> 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
CCB backend to fiber rack 1PPS
RNE3-6N7A- to RNE3-5A4-
WC575
>
> 10 MHz 15 RG223 4
> BNC male
CCB backend to LO rack 10Mhz distributor
RNE3-6N7A- to RNE3-1A9-
WC576
>
> 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
CCB backend to fiber rack reset box
RNE3-6N7A- to RNE3-5A3-
WC577
>
> LAN rx rm 70 fiber zip cord 7
> ST at both ends
CCB backend to mm junction box
RNE3-6N7A- to RNE3-9A2-
WF46
>
> 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
>
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