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4-22
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).
DeskTop T1 DSU
DTE or
DTE
other
Interface
signal
source
Figure 4-20 Data Path for DTE Remote Digital Loopback
3. TM and RL indicators are On
during the test.
General Data-
ON
SD RD
Comm
DeskTop
T1
1. T1 indicator must be Off; press T1
switch if indicator is On.
Figure 4-21 DTE Remote Digital Loopback, Front Panel Control
GDC 048R154-000
Network
Network
OOF LOS BPV ALM
TM T1
2. Press RL switch to start DTE Remote
Digital Loopback Test. Press switch
again to end test.
Diagnostics
DeskTop T1 DSU
Network
DTE
Interface
ST
LL
RL
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