Paradyne 3151 Information Manual page 2

CSU or DSU/CSU Circuit Card
(LEDs) and six test jacks.
2
The front panel of the CSU or DSU/CSU contains twelve light-emitting diodes
S e
l e c
t
O K
F a
i l
T e
s t
S i
N e
g
t
O O
F
A l
r m
E E
R
S i
g
D T
O O
E
F
A l
r m
P D
B
B P
I n
V
N e
t
O u
t
I n
M o
n
O u
t
I n
E q
p
O u
t
C S
U
3 1
5 1
S e
l e c
t
O K
F a
i l
T e
s t
S i
N e
g
t
O O
F
A l
r m
D T
E E
R
R
T X
S i
D
g
R X
O O
D
C T F
A l
S
r m
R T
S P D
B
B P
I n V
N e
t
O u
t
I n
M o
n
O u
t
I n
E q
p
O u
t
D S
U /
C S
U
3 1
6 1
July 2000
MODEL
3151 CSU
MODEL
3161
DSU/CSU
00-14949-01
3100-A2-GK40-40