3.2 CONNECTING THE INTERFACE DRIVER BOARD
This package contains an interface driver board that allows you to
configure your front function card for G.703 operation. Figure 3 shows
the Interface Driver Board connected to a Model 1092ARC front
function card (You may also use this product with other Patton rack
cards, such as Model 2500RC, 1045RC or 1092RC).
Follow the instructions below to connect the interface driver board
to the front function card:
1. With the function card (such as 1092ARC, shown above)
pulled out of the rack or clusterbox chassis, locate the driver
board to be replaced on the top of the base unit front card.
2. Lift the old interface board gently off of the PC board.
3. Position the IM2RC/F driver board on top of the function card’s
pc board with the sockets oriented toward the male pins.
Please be sure the label marked
FRONT
is pointed
toward the front of the function card (toward the LEDs).
4. Push the Interface Driver Board gently onto the socket and re-
install the function card into the rack or cluster system.
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Switches S3 Timing Mode
The setting of Switch S3 determines the source of the system timing.
The system timing may be provided by:
1. The G.703 network;
2. The local function card or remote baseband
modem/CSU/DSU (either a rackable function card or stand-
alone unit).
Set Switch S3 to “Network” timing when only one of the two
connected baseband modems or CSU/DSUs employ a 64k/G.703
interface card (the “other” baseband modem connects to a V.35, EIA-
232, etc device).
Set Switch S3 to “Modem” timing when both of the connected
baseband modems or CSU/DSUs employ a 64k/G.703 interface card.
In this application, one G.703 interface card must be set to “Modem”
timing, and the other must be set to “Network” Timing. (Please refer to
the baseband modem or CSU/DSU user manual for additional
configuration details).
Switches S4 and S5:
Reserved for Future Use
Switches S4 and S5 are reserved for future use and should remain
in the Off position.
Switch S6: Operation Mode
In some cases it is necessary to include bi-polar violations in the
AMI structure when operating in Clear Channel (64 kbps) mode. This
necessity is determined by communications or terminal equipment
external to the the IM2RC/F. Use Switch S6 to configure the unit to
transmit G.703 data to the network with or without BPVs.
S6
Setting
On No BPVs
Off Injected BPVs
Switches S7 and S8:
Reserved for Future Use
Switch S7 and S8 are reserved for future use and should remain in
the Off position.
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Figure 3
Model IM2RC/F Driver Board mounted on Model 1092ARC
Interface Driver Board
Model
1092ARC
FRONT
