4-22
Diagnostics
GDC 048R154-000
To initiate the test from the terminal interface Diagnostics Selection
screen, select
[D] Start DTE Remote Digital Loopback
.
Figure 4-21 shows the switches and indicators that are involved when
you command a DTE Remote Digital Loopback from the front panel.
You can also command the test by means of DTE interface pin BB
when the DTE Test Leads configuration option is enabled (switch
S10-2 On).
Figure 4-20
Data Path for DTE Remote Digital Loopback
Figure 4-21
DTE Remote Digital Loopback, Front Panel Control
Network
DeskTop T1 DSU
DTE
Interface
Network
DTE
Network
Interface
DeskTop T1 DSU
DTE or
other
signal
source
2. Press RL switch to start DTE Remote
Digital Loopback Test. Press switch
again to end test.
1. T1 indicator must be Off; press T1
switch if indicator is On.
3. TM and RL indicators are On
during the test.
General Data-
Comm
DeskTop
T1
ON
SD
RD
OOF LOS BPV ALM
TM
T1
ST
LL
RL
