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Model 117A4 Carrier Installation Instructions Installing a Single Carrier
Model 117A4 Carrier Installation Instructions
503-801-18022 Issue 2 February 1999
Single Carrier Installation Self Test
1
A single carrier must always function as a control carrier. Wait a few seconds,
then check the LED(s) on the right side of the Model 117A4 carrier.
Compare the OUT OF SYNC and CONTROL/EXPANSION LEDs against the
top three lines on the “SYNC and CONTROL/EXP LED Codes” label.
2
If the OUT OF SYNC LED is lit, power down, wait at least 15 seconds, and then
repower the carrier. If the LED is still lit, call for Customer Support as described
on the inside cover of this book.
3
Verify that the carrier’s CONTROL/EXPANSION LED is lit and that its color is
green. This is correct for a single-carrier installation.
1 2 3 4
6
4
T
RANS
T
ALK
21
O N
21
O N
5
C
A
U
TIO
N
U
S
E
O
N
L
Y
A
T
&
T
C
A
B
L
E
P
⁄N
8
47
6
67
896
IN
O
UT
O
UT
OF
SYN
C
M
N
N
O
E
A
P
T
R
H
A
N
H
A
P
T
E
R
G
R
R
E
P
R
A
C
I
T
E
-
O
K
L
O
R
E
M
I
P
S
U
M
R
E
P
R
A
C
I
T
E
-
O
K
R
E
P
R
A
C
I
T
E
-
O
K
X
E
R
T
F
A
M
R
U
K
L
A
R
I
E
N
L
O
R
E
P
R
A
C
I
T
E
-
O
K
L
O
R
E
M
I
P
S
U
M
X
E
R
T
F
A
M
R
U
K
L
A
R
I
E
N
L
O
OUT OF SYNC
CONTROL/
EXPANSION