Telex ANR TM 500 General Description, Design Features see Figure, Fitting and Comfort

General Description

The Telex Airman ANR™500 Active Noise Reduction headset combines design features of a lightweight headset with the advanced techniques of electronic noise reduction. The result is a comfortable light-weight headset that provides good electronic reduction of low frequency ambient noise, while the cushion design provides good passive reduction of high frequency ambient noise. To take advantage of this improved listening environment, the Airman ANR™500 also features extended response receivers for improved reproduction not only of radio communications, but also of stereo music played back over the aircraft entertainment system.

The headset comes in a fixed-wing version for use in aircraft with medium to low noise levels. This version can be plugged into an aircraft radio for standard monaural communications or into an intercom system wired for stereo entertainment.

The Airman ANR™ 500 headset is approved for aircraft use under FAA TSO’s C57a and C58a.

Design Features (see Figure 1)

Fitting and Comfort:

An adjustable ratcheted headband allows the wearer to make quick and easy adjustments to fit a wide range of head sizes, while the gimbal mounted earcups improve the headset comfort.

Control Module:

The power on/off switch and the stereo/mono switch are both located on the control module. The control module can be clipped to a shirt collar or pocket, using the clothing clip.

Boom Microphone:

A flexible gooseneck boom permits precise microphone placement. The boom rotates 120° to use the microphone on either side of the head. The microphone cartridge features a noise-canceling electret element. The microphone amplifier is built into the headset and operates on power supplied by the aircraft radio.

The microphone amplifier has an adjustable gain control to provide an output level equivalent to carbon microphone levels. (Adjustment by a qualified avionics technician is recommended.)

Cordage and Plugs:

The microphone cordage is protected inside the boom arm. Shielded wire throughout the headset protects against RFI and EMI. Strain reliefs on all cords provide maximum durability.

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