ADTRAN 1181001L1 Installation And Maintenance Practice page 19

3. Using the wire-wrap tool, wire wrap the "
" " on connector P10,
+
4. Wire wrap the "
–
.
EXTCLK A-IN
5. Wire wrap the drain or shield wire from the clock source to the pin marked
P4, .
EXTCLK A-IN
If the drain or shield is connected to the clock source, then the
drain or shield does not need to be connected to the
6. Tie the clock source wire neatly to the frame.
7. On the daughterboard mounted to the left of, and slightly below, P4, move the jumper so
that the left two pins labeled
Up to eight Total Access 3000 Chassis may be daisy chained to a single output from the
timing source, so only one wire run is required from the timing source for an installation of up
to eight Total Access 3000 Chassis. Use wire of the same type as was used for the wire run
from the CO clock source to the Total Access 3000 Chassis. To connect up to eight Total
Access 3000 Chassis to a single external timing source, perform the following steps:
1. Determine the length of wire required to run from the first chassis, connector P4, to the
second chassis, connector P4, that is to be wired in the same daisy chain. Leave approxi-
mately 1 to 1-1/2 inches for wire wrapping.
2. Using wire strippers, strip approximately 1 to 1 -1/2 inches from both ends of the wire
run.
3. Using a wire wrap tool, wire wrap the "
terminal pins of connector P4,
4. Run the wire from P10 on the "source" shelf to connector P4,
shelf.
5. Wire wrap the "
+
6. On the daughterboard of the receiving shelf, mounted to the left of, and slightly below P4,
move the jumper so that the right two pins, labeled
7. Repeat steps 1-6 for each Total Access 3000 Chassis, up to a total of eight in the daisy
chain, that is to be interconnected on the single CO timing source.
In any daisy chain of Total Access 3000 Chassis using a single
timing source, only the first shelf in the chain should have the
timing daughterboard jumpered to
chassis in the chain should have the daughterboard jumpered to
TERM OUT
61181001L1-5E
.
EXTCLK A-IN
" wire from the clock source to the pin marked "
TERM IN
, on the backplane.
A-IN
", " " of the wire run to the "
–
.
" wire from the clock source to the pin marked
+
NOTE
, are connected together.
", " " and drain wires to the "
+ –
", " " terminals of P4 on the receiving shelf.
+ –
TERM OUT
NOTE
. All the remaining
TERM IN
Data Connections
" on connector P4,
–
on connector
S
pin of P4.
S
", " " and "
+ – S
, on the receiving
EXTCLK A-IN
, are connected together.
"
13