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Tests
3. Enter test data at the DTE. Compare
data entered at the DTE with data
looped back and displayed by the
DTE. (Test equipment can be
connected in place of the DTE.
DTE
or
Test Device
DTE
Inter-
face
Note
Tests cannot be performed by means of front panel switches when the front panel has been inhibited by
an SNMP controller or by the terminal interface. Front panel enabled is the default condition. The DTE
interface RL lead can only command Remote Test if Channel EIA Test Leads has been enabled by an
SNMP controller or by the terminal interface. The default condition is disabled.
Figure 4-17
4-16
INS
L
I
N
E
SD
BPV AIS
OOF NS
TM ALM
T1
CH
RL
M
O
N
553
SC 553 DSU
TX
Driver
Framer
Analog
Receiver
Channel Remote Digital Loop
SpectraComm 553 Fractional T1 DSU
Installation and Operation Manual
ON
I
N
O
U
T
RSP
RD
EQ
2. TM indicator On while Remote
Test is active.
1. To start the test from the front panel,
press RL momentary action switch.
RL indicator is lit during the test.
Press switch again to end the test.
TX
RX
Remote DSU
Analog
Receiver
Framer
Network
TX
Driver
Channel Tests
DTE
Inter-
face
076R155-000
Issue 7
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