Flightcom 4DX CLASSIC User manual

4DX CLASSIC
USERS GUIDE
MAINTENANCE
Care and Maintenance
•Inspect ear seals and mic mu frequently for wear. Replace at 6 month intervals.
If you see any defect such as holes or cracks in the ear domes, ear seals, or
headband, headset should be immediately repaired or replaced.
•Do not remove the foam speaker cover.
•To ensure proper function, keep the microphone away from excessive moisture.
Do not store headset in high temperature environments or direct sunlight.
•Wipe headset and ear seals with a mild soap and water mixture only. The foam
mic mu may be removed and cleaned in a mild detergent, or replaced by
ordering from Flightcom.
WARNING
Never immerse any part of the Headset in water.
To Order Flightcom Accessories:
Call: 1-800-432-4342
Flightcom Corporation
17600 SW 65th Ave, Lake Oswego, OR 97035 USA
800-432-4342 · sales@ightcom.net · ightcom.net
Copyright © 2020 Flightcom Corporation. All rights reserved.
Flightcom is a registered trademark of Flightcom Corporation.
Specifications subject to change without notice.
600-0030-00 Rev H

INSTALLATION
Insert the larger plug into the jack marked “headphone” or “phone”.
•Insert the smaller plug into the jack marked “microphone” or “mic”.
•Set the stereo/mono switch on the cable splitter box to the “M” position. If
connecting to a stereo intercom, set the switch to the “S” position.
•Adjust headband slider and mic boom for proper t and comfort.
•Place the microphone no more than 1/8” from lips, at the corner of the mouth.
This is critical to the performance of the noise canceling electret microphone.
•One volume control is located on the dome with the mic boom, to adjust the level
of audio.
If the aircraft does not have a built-in push-to-talk (PTT) switch, a portable PTT switch
must be installed in order to use the radio. The master gain control located in the
aircraft radio should be optimized by an avionics technician whenever adding a new
model microphone to the system.
HEADSET ADJUSTMENTS
Adjustable
headband
Adjustable
boom
Volume control
Mic Placement
Place mic no more than 1/8”
from lips. Placement of mic is
critical for proper operation.
WARNING
If the microphone is positioned incorrectly, you may
experience a reduction or interruption in the audio
and or deterioration in clarity of intercom and radio.
HEADSET FEATURES
•Passive noise reduction by 24db
•Stereo/mono switchable
•Noise-cancelling electret microphone
•Adjustable headband
•Flexible mic boom with slide adjustment for accurate mic positioning
SPECIFICATIONS
Technical Spec
•Weight ...................................... 17.1 oz Ave. (w/o Comm Cable)
•Noise Reduction Rating ............................................... 24db
Microphone
•DC Bias Supply .............................8 to 16 volts, not polarity sensitive
•Source Resistance .........................................220 to 2200 ohms
MIL SPEC
•Humidity & Temperature per MIL-STD 810F and 810G
•Chemical Exposure per MIL-STD 810F and 810G
SAE
•Salt Spray per J1455, Sec. 4.3
WIRING DIAGRAM
Caution:
Bias voltage supplied to the microphone must come from voltage and resistance
ranges specified above. Voltages supplied in excess of those stated in the
specifications can cause microphone failure and void warranty. The mic audio signal
is present between the ring and barrel of the mic plug; tip is reserved for transmit
keyline.
Right
Left
Speakers
Mic.
6.3 mm Plug
5.2 mm Plug
MS