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0611 RM500SL User’s Guide Version 2.8 Page 92
20.11
REM speaker overdriven
FastFacts 20.11: REM speaker overdriven
20.12 Barcode scanner malfunction
FastFacts 20.12: Barcode scanner malfunction
REM speaker overdriven!
This message indicates that the REM speaker is unable to produce the SPL
required for a test. This is usually the result of a standing wave null at the REM
reference microphone caused by reverberation in the environment. It warns of a
situation that could cause significant measurement errors.
v Move the RM500SL and client away from walls and hard objects. Avoid
placing the RM500SL under an overhanging shelf or cabinet.
v Move the RM500SL to the front edge of the table.
v Move the client slightly closer to or further from the REM speaker.
v Position the test ear more directly in front of the REM speaker.
v Apply sound absorbers to nearby reflective surfaces.
If there is no red scanning beam when the trigger is pulled, tug on the cable where
it enters the scanner. If it comes loose easily, push it back in until it clicks in place.
If the scanning beam stays on when the trigger is released or if the barcode
scanner fails to read known good barcodes, try the following:
1) Unplug the scanner from the RM500SL, then reconnect it. If the problem
persists…
2) Print this page on an external printer (see 2.7: External printer, auxiliary audio
outputs) or from the electronic user’s guide on the RM500SL software CD (see
1.3: Electronic user’s guide).
3) Scan these two barcodes, starting with the top one. This will reset the scanner
to its default settings.