9
10
4.
With the card edge contacts aligned with the socket, firmly
seat the module by using your thumbs to apply pressure
directly to the right and left edges of the module faceplate.
Applying moderate and even pressure should be sufficient to
seat the module. You should hear it click into place.
5.
To secure the module in place, push the thumbscrews into the
chassis and turn the screws clockwise to tighten.
6.
The enclosure provides the necessary protection of the
operator, and the power can now be applied to the modem
and then the network connected.
4.2 REMOVING THE EXISTING QUICKCONNECT
TM
MODULE
1.
Turn off the modem power switch. Leave the power cord
plugged into a grounded outlet to keep the unit ground. The
line connection should also be disconnected before
removing the module.
2.
Loosen the two thumbscrews on the module by turning them
counterclockwise.
3.
Grasp the thumbscrews and gently pull the module from the
unit. Apply equal force to the thumbscrews to keep the
module straight as you remove it.
4.3 CONNECTION TO THE TWISTED PAIR INTERFACE
The Model IM1/F-128K supports communication between itself and a
G.703 PCM network at distances up to 3,000 feet (914m) using 24 AWG twist-
ed pair cable.
To function properly, the Model IM1/F-128K requires two twisted pairs of
metallic wire. These twisted pairs must be unconditioned, dry metallic wire,
between 22 and 26 AWG (0.4mm to 0.6mm diameter solid conductors). Higher
gauge wire may limit distance. Flat modular telephone type cable is not
acceptable.
The RJ-45 connector on the Model IM1/F-128K twisted pair interface is
pre-wired according to the signal/pin relationships shown in Figure 5 below.
1 (RX Tip)
2 (RX Ring)
3 (N/C)
4 (TX Ring)
5 (TX Tip)
6 (N/C)
7 (N/C)
8 (N/C)
1
2
3
4
5
6
7
8
Pin
Signal Name
Direction
Function
(In reference to IM)
1
RD(T)
IN
Receive data in (tip)
2
RD(R)
IN
Receive data in (ring)
3
Not used
4
TD(R)
OUT
Transmit data out (ring)
5
TD(T)
OUT
Transmit data out (tip)
6
Not used
7
Not used
8
Not used
Figure 5. Model IM 1/F-128K Twisted Pair Interface Signal/Pin Relationship
NOTE:
The card edge connector should meet the socket when
it is almost all the way into the chassis. If you encounter a lot of
resistance, remove the module and repeat Steps 2 and 3.
Safety Precautions
If you want to open the host equipment, the network connec-
tion must be disconnected prior to accessing any internal parts
that may carry TNV and the following instructions should be fol-
lowed exactly.
IMPORTANT
Connection of the Patton G.703 IM to a
CSU DTE requires a crossover
twisted pair cable. Connection of the Patton G.703 interface module to a
PCM network requires a straight through pair cable.
