AmpliVox PC850, Руководство по эксплуатации

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D-0116493-B (OM015)
– PC850 Operating Manual
5.6. SAVING AUDIOGRAMS IN INTERNAL MEMORY
The user may save up to 12 audiograms, referenced by number, in the internal memory of the audiometer. To
save the current set of audiogram thresholds press and hold the MENU key, and then press MENU SELECT
repeate
dly until “Save Audiogram to 1” appears on screen. Use the SIGNAL 
keys to select a location
numbered 1-12, and then press the YES key. Release the MENU key once confirmation appears on the
display. Note that the Save process will overwrite any records that exist in the selected memory location.
5.7. LOADING AUDIOGRAMS FROM INTERNAL MEMORY
Press and hold the MENU key, and then press MENU SELECT repeatedly until “Load Audiogram No 1”
appears on screen. Use the SIGNAL

keys to select a location numbered 1-12, and then press the YES
key. Release the MENU key once confirmation appears on the display.
5.8. DATA TRANSFER TO AMPLIVOX AUDIBASE
Refer to the Audibase operating manual to transfer test results to a PC with the Amplivox Audibase software
installed.
5.9. SUGGESTED SEQUENCE OF OPERATION AND TEST PROCEDURE
The following notes are for guidance only. Refer also to ISO 8253 (Audiometric Test Methods) for further
guidance.
5.9.1. PRE-TEST
(1) Switch the audiometer on
(2) Perform a listening check
(3) Decide whether to use the Threshold Retention Function and/or an audiogram card to record the
thresholds
(4) Prepare the test environment & patient
(5) If the patient response switch is not being used give instructions to the patient to acknowledge any tone
presented by raising or lowering the finger
(6) If the patient response switch is in use give instructions to the patient to acknowledge any tone
presented as follows:
“As soon as you hear the tone, press the switch. When you no longer hear the tone, release the switch”.
(7) Fit the headset to the patient. Select the better hearing ear (according to the patient) by pressing either
the LEFT or RIGHT key and start the familiarisation session.
5.9.2. FAMILIARISATION
(1) Present the tone 30dB at 1kHz for between 1 and 2 seconds. If there is no response at 30dB, increase
the attenuation level in 10dB steps until the patient responds
(2) When the patient responds, wait for 1 to 2 seconds and present the tone again at the same level;
however, if the patient does respond at 30dB, reduce the signal level in 10dB steps, repeating the
presentation until there is no response, then increase the signal level in 5dB steps until the patient
responds; wait 1 to 2 seconds and present the tone again at the same level
(3) If the responses are consistent with the pattern of tone presentation
,
start measuring the patient’s
hearing thresholds; if not, repeat the familiarisation