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Diagnostics
3. TM, T1, ST, and RL indicators
are On during the test.
TM flashes to indicate detect-
ed errors.
General Data-
ON
SD RD
Comm
DeskTop
T1
1. T1 indicator must be On; press T1
switch if indicator is not already On.
Figure 4-14 Network Remote Test with Self Test, Front Panel
Control
DTE Self Test
The DTE Self Test function provides test pattern generation and
checking that involves the DTE interface. The test pattern is selectable
to be either a 2047-bit or a 511-bit pattern. You can select the pattern
by means of hardware switch S10-3 or by means of the terminal
interface DeskTop T1 Diagnostics Selection screen, [9] Select DTE
Self Test Pattern .
The DTE Self Test function can be initiated from two selections in the
terminal interface Diagnostics Selection menu: once by itself and once
in combination with a loopback test. The Remote Digital Loopback
with Self Test is discussed on a later page under its own heading.
You can use the DTE Self Test function by itself to perform an End-
to-End Self Test as illustrated in Figure 4-15. You can command the
OOF LOS BPV ALM TM T1
2. Press RL and ST switches to start
Network Remote Test with Self Test.
Press switches again to end test.
4-17
ST
LL
RL
GDC 048R154-000
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