Approved Document No. DAU0000567 Rev 5 • Page 2 of 4
Approved Document No. DAU0000567 Rev 5 • Page 3 of 4
Familiarisation with your portable loop system
All of the amplifier’s indicators and controls can be found on its rear. Although short form user
instructions also appear on its reverse, we strongly recommend you read the more detailed
information on the following pages before using the system.
Although the unit will operate straight from its storage box, it is advisable to charge the PL1
overnight before using it for the first time (see
charging the amplifier
section on page 4 for details).
AFILS On
indicator
Lit green when
the amplifier is
switched on and
ready to use
AFILS Working indicator gauge
When the user speaks these indicators
will illuminate to confirm the system is
working correctly. They follow the user’s
speech pattern and measure the
electrical current in the induction loop.
Typical applications
Remote socket
For connection of optional
equipment such as an
AMT tie/desk microphone.
Please note, inserting
ancillary equipment into
this socket will disable the
PL1’s internal microphone.
See page 4 for a list of
ancillary equipment.
Internal microphone
The PL1 contains an
internal speech
compressor / automatic
gain control and, as such,
the user does not have to
direct his or her voice
directly towards this
microphone. This feature
allows the PL1 to be
positioned slightly to one
side of the user as shown
in figures 1 & 2. Optimum
performance is achieved
at speaking distances of
approx. half a metre.
Please also refer to the
AFILS Working
gauge to
ensure best performance
If yellow & red (2&3) are predominantly
lit, adjust the unit’s position and/or your
speech direction accordingly.
Battery status indicator
Illuminates yellow when
the battery is low and in
need of recharging. Flashes
yellow when the unit is
recharging. See page 4.
Charger socket
For connection of the PL1’s
plugtop battery charger.
Note that the amplifier
will still operate when its
battery is charging. See
page 4 for further details.
= OK
=
too
loud
Charging indicator
Lit green when the battery
is being charged. See page
4 for further details.
Figure 1 :
Typical counter / ticket booth application
Figure 2 :
Typical tabletop / meeting room application
In order to view people in wheelchairs, etc., it is important you do not position the amplifier di-
rectly in front of you. Always position the amplifier so its front is angled towards the hearing aid
user without blocking their view. The microphone on the rear of the amplifier has a wide pick up
range and will continue to respond to your speech if positioned as shown in the above diagrams.
If multiple portable loop systems are to be used in close proximity, it is possible that the ‘field’
generated by one system may be picked up by a hearing aid user stood at another. To guard
against this, try to ensure there is a gap of at least two metres between each system.
It can be seen from figure 1 that as well as covering tall people, the field of coverage of the AFILS
system also extends down to cover small children, people confined to wheelchairs, etc.
Changing the amplifier’s default on time
The amplifier’s default on time can be changed from the factory default setting of 10 minutes to
30 or 60 minutes as required.
To do this, make sure the amplifier is powered down and then press and hold down
the
On/Off
button and watch the ‘AFILS working’ indicators step between 1, 2 and 3.
Let go of the button when indicator 1 is lit to set the on time to 10 mins.
Let go of the button when indicator 2 is lit to set the on time to 30 mins.
Let go of the button when indicator 3 is lit to set the on time to 60 mins.
For partially sighted users, the PL1 also sounds a stepped frequency beep
to aid selection (low = 10 mins; medium = 30 mins; high = 60 mins).
The amplifier’s on time commences the moment the
On/Off
button is
released. 10 seconds before the end of the session, a beeper will sound to
indicate shut off is imminent. To extend the session by a further period,
simply press the
On/Off
button again before the 10 seconds elapse.
If the amplifier is switched off at any time, the default on time will return to its previous set rate
when it is switched back on. Please note, if the
On/Off
button is pressed whilst the unit is on and
NOT in the last 10 seconds of its session time, it will immediately turn off.
= 10 mins
= 30 mins
= 60 mins
On/Off button
To turn the amplifier on,
momentarily press the
On/Off
button (to turn
it off press the On/Off button again).
Provided the battery has enough
charge, the PL1’s
AFILS On
indicator light will be lit green.
The system is now ready to use
(refer to the typical application
diagrams on page 3 for guidance
on the amplifier’s position).
To prevent the system being left on
for extended periods of time and
flattening the battery, the
amplifier is set to operate for a
default on time of 10 minutes.
10 seconds before the 10 minutes
expires, a beeper will sound to
indicate that shut off is imminent.
To extend the amplifier’s on time,
simply press the
On/Off
button
again before the 10 seconds elapse.
If required, the system’s default on
time can be extended to 30 or 60
minutes. See page 3 for details.
