5
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C
Status Indicator
The indicator LED shows GREEN, RED or ORANGE depending on the status or mode of
the IRN-20.
GREEN = on
Alternating RED/GREEN = recharge soon
RED = charging
Orange = charged
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D
Dual Directional Microphones
The IRN-20 uses two separate microphones (left and right) to provide a constant
transmitted voice level as the user’s head is turned from side to side.
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E
Battery Compartment Lid
To open the battery compartment lid, hold the IRN-20 upside down, the lid facing
you, and the press the center of the lid with both thumbs and slide the lid upward.
Insert an AA rechargeable Ni-MH battery (included in the Azden Classroom Systems
IR-CSV and IR-WSV) or an AA Alkaline battery following the polarity marked inside the
battery compartment.
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F
Microphone Gain Settings
The IRN-20 microphone gain control is factory set and will not need adjusting. Turn-
ing the control by a jeweler’s Phillips-head screw driver (not included) will increase/
decrease the AF level.
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G
Neck Strap
To separate the clasp, grab the both end of the clasp and firmly pull them apart. To
reattach, simply snap the ends back in or slide one end to the other until clicks. The
strap length can easily be adjusted by moving the sliders.
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H
Microphone Jack
Plug in an external microphone with 3.5mm mini plug here to override the IRN-20’s
microphones.
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I
Battery Charge Jack
Plug the BC-31 Battery Charger (included in the Azden Classroom System IR-CSV &
WSV) to charge the supplied rechargeable battery (IHR-3U). Connecting the charger
will automatically turn off the IRN-20 and start charging (the red LED will be lit). The
charge time from flat is typically 10 hours. When charged, the indicator will be lit
orange.
○
J
Auxiliary Jack
An external audio source with a mini plug, such as iPod or computer, can be plugged
in here. The IRN-20 will then transmit the audio signals to the IRR-40P receiver to
play the audio through the system’s speakers.
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K
Infrared Emitter
In order for the transmitter to send the infrared signals, the emitter will always
have to be exposed. Do not cover the emitter area.