Pilot USA PA-1779T - Manual (Page 3)

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3.0 Fitting Your Headset
Wearing your headset properly is paramount in achieving both comfort and the best performance possible.
The headset should be placed on your head and slowly pulled down so that each ear cup is properly
positioned over the ears.
It should apply slight pressure on your head without being to snug. You may need to make your final
adjustments in a high noise environment and with the ANR electronics turned on.
3.1 Enhanced Voice Intelligibility (EVI)
The Independence headset has incorporated into its integrated circuitry a proprietary DSP circuit which
enhances all audio within speech frequencies. The result is a more intelligible incoming ATC transmission.
Incoming speech frequencies are amplified 2 – 4 dB for more clarity and intelligibility. This is particular
favorable for pilots who may have some hearing loss.
3.2 Microphone Placement
Your headset comes with an adjustable “memory” flex microphone boom and a noise canceling electret
microphone. The mic boom can be rotated 180 degrees for left or right side use. Proper placement of the
microphone is critical in order to achieve clear communications. The microphone should be positioned at the
corner of your mouth approximately ¼” away from your lips.
3.3 Volume Control (On Comm-Cord Splitter)
The PA-1779T is fitted with two individual volume controls, one each for the right and left side of the
headsets. The volume control is located on one side of the triangular splitter on the comm-cord. The other
side contains the mono-selector switch. When adjusting the volume control the pilot-in-command should
adjust their volume control first with the audio system turned on and the ANR system turned off. Then turn
the ANR back on and adjust the individual sides of the headset.
3.4 Mono/Stereo Selector (On Comm-Cord Splitter)
Your headset comes standard with a Mono/Stereo selector switch which is located on one side of the
triangular splitter. “M” indicates the mono position while “S” indicates the stereo position. The volume control
is on the reverse side. It should be noted that if you are using a monaural intercom and your headset is set
in the stereo position, you will only hear through one speaker of your headset. With a stereo intercom you
will hear true stereo in both ears.
3.5 LED Light On Ear Cup (Left Shoulder of Boom Side Ear Cup)
If illuminated, the light indicates the ANR system is activated.
3.6 Microphone, Audio and Charging Jack (Boom Side Ear Cup)
There are two jacks on the boom side ear cup. The smaller of the two jacks is for the microphone plug or
can be used for the wall charger. The larger jack which is directly beneath the smaller jack is used for cell
phone or auxiliary audio/audible checklist.
3.7 Rechargeable NiMH Battery, Power Jack and Wall Charger
Your PA-1779T ANR headset has a rechargeable nickel metal hydride battery pack installed inside the ear
cup. This type of battery has no “memory effect” as with other rechargeable batteries such as NiCad. There
are two 3.5 mm jacks for charging the battery with the provide wall charger. They are located on each ear
cup directly below the overhead cord where it enters the cup. These jacks serve a dual purpose and can
also be used to plug in the microphone.