2
July
2000
3100-A2-GK40-40
CSU or DSU/CSU Circuit Card
The front panel of the CSU or DSU/CSU contains twelve light-emitting diodes
(LEDs) and six test jacks.
00-14949-01
MODEL
3151 CSU
MODEL
3161
DSU/CSU
OK
Fail
Test
Sig
OOF
Alrm
EER
Sig
OOF
Alrm
PDB
BPV
Se
lec
t
Ne
t
DT
R
TX
D
RX
D
CT
S
RT
S
DSU
/CSU
3161
OK
Fail
Test
Sig
OOF
Alrm
EER
Sig
OOF
Alrm
PDB
BPV
Se
lec
t
Ne
t
DT
E
CSU
3151
Ne
t
In
O
ut
In
O
ut
In
O
ut
M
on
Eq
p
Ne
t
In
O
ut
In
O
ut
In
O
ut
M
on
Eq
p
