Figure 11-13. Test Pattern Only - ADTRAN DSU III ARdc User Manual

LOCAL
DSU/CSU
Error Test Pattern
Inject Generator
Tx
Rx
Error Test Pattern
Clear Detector
Test Purpose
Testing using a test pattern does the following:
•
•
•
Initiating
Follow the menu path outlined in Figure 11-14 to initiate a test using a
test pattern.
61200270L1-1
Tx
TELCO
Rx

Figure 11-13. Test Pattern Only

Transmits user-selected test pattern using an internal test pattern
generator, and compares the received data using internal test pattern
detector to detect if there are any errors on the DDS circuit.
Injects errors and verifies the unit transmits data across the commu-
nication circuit to the remote unit.
Helps determine from which direction the circuit is receiving errors.
DSU III ARdc User Manual
Chapter 11. Testing and Troubleshooting
REMOTE
DSU/CSU
Error Test Pattern
Inject Generator
Tx
Rx
Error Test Pattern
Clear Detector
Tx
Rx
11-17