Figure 11-15. Initiating A Self Test; Table 11-5. Remote Tests And At Commands - ADTRAN DSU III ARdc User Manual

2=TEST
Interpreting Test Results
Once Self Test is activated, the LEDs cycle on and off as the system runs
the self test. A pass or fail status will be displayed on the LCD along with
a checksum indicating the current firmware revision.
REMOTE UNIT DIAGNOSTICS
A remote DSU III ARdc can perform seven different tests; see Table 11-5.

Table 11-5. Remote Tests and AT Commands

Front
Panel
1=2047 PATTERN
2=511 PATTERN
3=STRESS PTRN #1
4=STRESS PTRN #2
5=STRESS PTRN #3
6=STRESS PTRN #4
7=DATA FROM DTE
The Remote Unit submenu allows a remotely installed DSU to be placed
into loopback. There are six test patterns to choose from, or Data from
the DTE may be selected.
61200270L1-1
1=LOCAL UNIT
2=REMOTE UNIT

Figure 11-15. Initiating a Self Test

AT
Command
_T0&T7 Standard 2047 random data pattern
_T1&T7 Standard 511 random data pattern
_T2&T7 DDS Stress Pattern #1
_T3&T7 DDS Stress Pattern #2
_T4&T7 DDS Stress Pattern #3
_T5&T7 DDS Stress Pattern #4
&T6 Data from DTE
DSU III ARdc User Manual
Chapter 11. Testing and Troubleshooting
1=DTE & LOOP(LL)
2=LOOP ONLY (RT)
3=DTE ONLY
4=DTE WITH TP
5=TEST PATTERN
6=SELF TEST
Description
11-19