INSTALLATION
I-E96-225A
3 - 5
JUMPER J4
Jumper J4 connects the shield of the RS-232-C connector
cable to chassis ground through the IMCPM03 module. The
cable shield should be grounded at either end, but never both
ends. If the cable shield is grounded at the console or station
end, short pins 2 and 3 of jumper J4. This opens the ground
connection between the cable shield and the IMCPM03 mod-
ule.
JUMPER ARRAYS J5 AND J6
Set jumper arrays J5 and J6 to match the type of equipment
(DTE or DCE mode) communicating with the IMCPM03 mod-
ule. Jumper array J5 selects DTE, DCE, or loopback operating
mode for the DB-25 computer port. Jumper array J6 selects
DTE, DCE or loopback operating mode for the DB-9 EWS port
mounted on the circuit board. Either port can be DCE or DTE
mode.
For connection to DCE equipment (modems), set up the
IMCPM03 module as DTE mode. For connection to DTE equip-
ment (consoles or stations such as the EWS), set up the
IMCPM03 module as DCE mode. For DCE equipment
(modems), install CPM jumpers J5 and J6 as shown in
Figure
.
For DTE type equipment (such as the EWS), install the jump-
ers as shown in Figure
. Confirm the equipment pin out to
verify the RS-232-C standard before setting jumpers. Refer to
Figure
for the settings for jumper arrays J5 and J6 during
diagnostics (loopback mode).
The handshake function provides an additional layer of com-
munication integrity. It enables the transmitting device to send
a notice to the receiving device before a message is sent. The
Figure 3-3. DCE Setting for Jumper Array
J5 and J6
JU M P E R S J5 , J6
JU M P E R S J5, J6
D C E W IT H N O H A N D S H A K E
D C E W IT H H A N D S H A K E
T P 3 6 05 5 A
1
3
4
2
11
9
10
12
5
6
7
8
1
3
4
2
11
9
10
12
5
6
7
8
