17
D-0126050 rev 1 -
270+ Operating Manual
4.
USING THE 270+
4.1.
GENERAL PRECAUTIONS
When operating the instrument, please observe the following general precautions:
1. Use this device only as described in this manual.
2. Be sure to use only stimulation intensities acceptable to the patient.
3. Clean the headphones, insert phones and patient response switch regularly using a recognised
disinfectant.
4. The presence of tinnitus, hyperacusis or other sensitivity to loud sounds may contraindicate testing
when high intensity stimuli are used.
Please note:
Careful handling of the instrument whenever in contact with a patient should be given high priority. Calm and
stable positioning while testing is preferred for optimal accuracy.
1. Never clean the transducer housing with water or insert non-specified instruments into the transducer.
2. Do not drop and avoid other undue impact to this device. If the instrument is dropped or in any other
way damaged, return it to the manufacturer for repair and/or calibration. Do not use the instrument if
any damage is suspected.
4.2.
SWITCHING THE INSTRUMENT ON AND OFF
Select the on/off button for 1 second to switch the instrument on. The display will briefly show
the model and the type of headphone currently selected for use. No warm-up time is required,
although a short diagnostic routine will run for a few seconds.
To switch the instrument off again, hold the button for approx. 2 seconds and the instrument
will turn off.
4.3.
SWITCHING HEADPHONES
If a secondary headphone has been enabled (e.g. IP30 together with DD45) it will be necessary to select the
required headphone as follows: Select
MENU
and move to the item
SELECT OUTPUT
.
Select the headphones to be used with the audiometer with the softkeys
F1
and
F2
. Confirm your selection by
pressing softkey
F4
(
SAVE
).
CAUTION
Содержание 270+
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