AKG Acoustics PT 81 Headphones User Manual


 
Important:
2.2 Powering
2.2.1 Inserting Dry or
Rechargeable Batteries
Note:
2.2.2 Replacing Batteries
2.2.3 PA 81 Optional
Supply Adapter
If you wish to set up a multichannel system, read section 1.1
Multichannel Systems in Part V first.
To power the PR 81 portable receiver you can use the supplied 1.5 V AA size dry
batteries, 1.5 V AA size rechargeable batteries (not supplied), or the optional
PA 81 supply adapter for direct powering from a camcorder.
1. If the belt clip (1p) is attached to the receiver, remove the belt clip (1p) first so
you can open the battery compartment (1I):
Use a screwdriver as a lever to lift both ends of the belt clip (1p) out of the
fixing holes in the receiver side panels.
2. To open the battery compartment (1I), press down on the arrow symbol on the
battery compartment cover (1l) and push the battery compartment cover (1l)
in the direction of the arrow away from the receiver.
3. Insert the supplied batteries into the battery compartment (1I) making sure to
align them with the polarity marks inside the battery compartment (1I).
If you insert the batteries incorrectly, the receiver will not be powered.
You may use 1.5 V AA size rechargeable batteries instead of the supplied dry
batteries.
4. Set the POWER switch (1a) to "I" to switch power to the receiver ON.
The POWER LED (1b) will flash momentarily. If the batteries are fully charged
the POWER LED (1b) will extinguish.
If the POWER LED (1b) begins to light constantly the batteries will be dead in
approximately 60 minutes. Replace the batteries with new or fully charged
ones as soon as possible.
If the POWER LED (1b) does not flash the batteries are dead. Insert new bat-
teries.
5. Use the supplied screwdriver (1m) to set the SQUELCH control (1j) fully CCW
(minimum). For details on setting the SQUELCH control (1j) refer to section 1
in Part V.
6. Align the battery compartment cover (1l) with the guide grooves on the battery
compartment (1i) and push the battery compartment cover (1l) against the
direction of the arrow to the point that the battery compartment cover (1l)
clicks shut.
If the POWER LED (1b) begins to light constantly and brightly the batteries will be
dead in approximately 60 minutes.
If the POWER LED (1b) does not flash on switching power ON or the RF LED (1c)
extinguishes, the batteries are dead.
Replace the batteries with new or fully charged ones.
1. If the belt clip (1p) is attached to the receiver, remove the belt clip (1p) first so
you can open the battery compartment (1I):
Use a screwdriver as a lever to lift both ends of the belt clip (1p) out of the
fixing holes in the receiver side panels.
2. To open the battery compartment (1I), press down on the arrow symbol on the
battery compartment cover (1l) and push the battery compartment cover (1l)
in the direction of the arrow away from the receiver.
3. Remove the batteries from the battery compartment (1i).
4. Insert the new batteries into the battery compartment (1i) making sure to align
them with the polarity marks inside the battery compartment (1I).
If you insert the batteries incorrectly, the receiver will not be powered.
5. Align the battery compartment cover (1l) with the guide grooves on the battery
compartment (1i) and push the battery compartment cover (1l) against the
direction of the arrow to the point that the battery compartment cover (1l)
clicks shut.
The optional PA 81 supply adapter allows you to power the PR 81 receiver direct-
ly from an external power supply such as a DC supply output on a camcorder. The
PR 81 supply adapter has been designed for supply voltages from 5 V DC to
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PART II: PR 81 RECEIVER
II