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3M
™
Advanced Systems Tester 900AST Series
16
In this case the low impedance anomaly at 24
inches is detected but not classified. The Auto TDR
displays ‘????’ below the trace.
Restoring the Aircraft After Testing/
Troubleshooting
Disconnect the 900AST TDR test cable from the
aircraft wiring. Also, remove any adapters (if
used). Ensure the other end of the coaxial cable is
reconnected. Reinstall the line replaceable unit or
component that was removed to accomplish testing
or troubleshooting and perform all applicable
maintenance manual procedures and operational
checks.
Care and Maintenance
Please see the 900AST Series Instruction Manual for
care and maintenance information.