2-16
Computer Group Literature Center Web Site
Preparing and Installing the Hardware
2
Modem
J20
20-pin male IDC connector,
connects to a user-supplied
modem
User-supplied 20-conductor cable;
usually supplied with the modem
J21
6-pin polarized male connector,
supplies power to the modem
User-supplied 6-conductor cable;
usually supplied with the modem
VME
J2
64-pin male connector that
cables to J2 on the P2 adapter
board
Part number 30-W2514B02.
17.5-inch 64-conductor flat ribbon
cable furnished with the
MVME712M (see Note below)
P2 Adapter Board
Interconnection
Connector
Description
Cable
VME
P2
96-pin female DIN 41612
connector that connects to the
chassis backplane
None needed
J2
64-pin male connector that
cables to J2 on the MVME712M
Part number 30-W2514B02.
17.5-inch 64-conductor flat ribbon
cable furnished with the
MVME712M (see Note below)
SCSI
J3
50-pin male IDC connector that
cables to J3 on the MVME712M
and/or to SCSI devices
Part number 30-W2960B01A.
17.5-inch 50-conductor flat-ribbon
cable furnished with the
MVME712M, used only in the
external-SCSI-only configuration
labeled Configuration E in
. Otherwise, a
user-supplied 50-conductor cable
with SCSI connector(s) as needed
Note
If you wish to use your own cable for the P2 signals from J2 on the P2 adapter
board to J2 on the MVME712M, note that the cable should be kept as short as
possible. Any cable over 2.5 to 3 feet is likely to cause signal problems.
The maximum cable length that can be used from the P2 adapter board to the
MVME712M will vary depending on what other cables are attached to the
MVME712. The connections most susceptible to problems caused by long P2
cables are the Ethernet and parallel port connections.