User's Manual

63
REM reference
microphone not
functioning properly
If the problem persists after
several attempts, contact
customer service
Probe tube
calibration
procedure not
successful
Probe tube blocked or
worn
Change the probe tube
Probe tube not inserted
to the correct position for
calibration purposes
See heading 2.2.2 Probe tube
calibration
REM probes too far from
speaker
Bring the REM probes
nearer, to around 0.5 m
REM probes or reference
microphone not
functioning properly
If the problem persists after
several attempts, contact
customer service
A test cannot be
accessed
Optional test not
activated
Contact the Inventis
technical service department
to obtain the license,
supplying the serial number
of the instrument
FF (free field)
output cannot be
selected
Power adapter not
connected
Connect the power adapter
supplied with the instrument
No sound from
the required
speaker in FF
mode
FF output not correctly
configured
Check that the correct
configuration was selected
during the calibration
procedure
Sound produced
by speaker is
distorted
Patient not positioned
facing the device
Position the patient directly
in front of the device, at a
distance of around one metre