RA660 Operation Manual
8509790 Rev. 2
33
18/04/2018
5.5.2 Error Codes
If the automatic test is unable to establish a threshold at a frequency it will record and error
code instead of a threshold. Some error codes are immediate warnings, including both an
onscreen visual and auditory signals. Some error messages have an audio feedback
message played to the subject. A list of error codes is shown below.
Error Code
Description
NR
No response at 1 kHz.
Did not obtain a subject response for the first ear tested at 1 kHz.
Audio Feedback
“Listen carefully, and make sure you hear the tone. Then quickly
press and release th
e handswitch.”
2ND
1 kHz 20 Presentations No HTL
No validation at 1000 Hz. There is no validation for the first test ear
response at 1000 Hz. This occurs if too much time has elapsed or 25
presentations without achieving threshold validation.
Audio Feedback
“As soon as you hear the tone even it is very faint, quickly press and
release the handswitch
.”
RF
1 kHz Retest Error.
Failed 1 kHz validity. The first ear fails the 1000 Hz retest. This
validity check is performed by testing each ear twice at 1000 Hz. The
thresholds must agree ± 5 dB.
If the RA 800 cannot get at 5 dB agreement the operator is notified by
a beep or error message.
Audio Feedback
“As soon as you hear the tone, even it is very faint,
quickly press and release the handsw
itch.”
SNR
Handswitch Not Released Error
Re-instruct and restart
Audio Feedback
“The handswitch button must be released quickly. Press and release
the handswitch button as soon as you hear the to
ne.”
RNT
Response No Tone.
Responding when no tone is present.
Audio Feedback
“Be sure you hear the tone, then press and release your hand switch quickly.”
MAX
Error for Second Time. No validation on one or two frequencies.
The retest did not validate the HTLs at the required one or two
frequencies. A maximum of 25 tone presentations or 60 seconds are
allowed at each test frequency. Failed for a second time.
Audio Feedback
None
Switch to manual mode and administer a manual test at the missed
frequencies.
NR3
Maximum Failed Frequencies.
Failed to establish thresholds.
Audio Feedback
None
Summary of Contents for RA660
Page 1: ...RA660 Operation Manual RA660 PC based group audiometer...
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Page 41: ...RA660 Operation Manual 8509790 Rev 2 39 18 04 2018 RA660 Daily Listening Check Screens...
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