Sigtronics S-20H Series User manual

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…when it counts!
Model S-20H
Headset Instructions
The S-20H series headsets are adjusted at the factory for immediate use with all
standard general aviation radio systems utilizing the U174/U jack. Headsets are
equipped with a coiled cable and a single U174/U plug configuration.
The headband is adjustable through a full range of motion, or the locking nuts
may be tightened to allow you to custom fit the headset. Place the headset over
your head, adjust the slides up until minimum pressure is felt on the top of your
head. The headset is now properly adjusted. For maximum noise attenuation, the
clamping pressure has been set at the factory. Releasing the clamping pressure
by bending the headband is not advised, because loss of attenuation will result.
Note: If especially small (children) or large headbands are needed, they may be
ordered from Sigtronics.
The microphone boom is fully adjustable and will rotate 360 degrees for use on
the left or right side of the head. The locking screw that secures the boom to the
ear cup is factory set to insure the correct tension. Turning it will not change the
tension, because the nut on the inside of the cup will turn as well. Microphone
placement should be at the corner of the mouth, approximately ¼” from the
lips. The exclusive thumbscrew on the mic boom may be used to assure proper
adjustment.
When you first connect the headset, turn the volume control on the headset up
to the full clockwise position, then adjust the listening volume with the audio
control of either your radio or intercom as appropriate. Passengers should also
turn their individual headset volumes up fully. Doing this allows for a full range of
adjustment for each passenger, since those with the most acute hearing can turn
their headset volume down, if necessary.
continued on back…
The headset parts may be cleaned with mild soap and water using a soft cloth.
Then dry immediately. Caution: Do Not immerse any part of the headset in water
or any other liquid. Be especially careful not to allow the microphone to become
wet! Exposure to moisture may cause internal corrosion and failure and will void
your manufacturers warranty.
Cleaning will help the headset maintain its “like new” condition for many years.
WINDSCREEN
The microphone windscreen will reduce annoying wind noise and breath pops
picked up by headset microphones. It also protects the microphone element
from dirt and moisture. The windscreen should be washed regularly to maintain
hygiene and avoid clogging. Wash in warm water and mild soap. Rinse thoroughly
and make sure it is completely dry before putting it back on.
To remove the windscreen, take out the screw that holds the microphone on the
boom and grasp the windscreen lightly along its entire length and slip it off.
Put the windscreen on the microphone by gently pulling from the open end. Do
not pull it so tightly that it stretches against the end of the microphone.
WARRANTY
Your headset is covered by a limited three-year parts and labor warranty. Please
see the enclosed warranty card for details.
You may refer to the parts list on the reverse side, if you choose to replace parts
yourself. The parts list describes parts for this particular headset only. Parts lists
for other models are available on our Web Site or can be obtained by contacting
Sigtronics Corporation.
Sigtronics Corporation
178 East Arrow Highway
San Dimas, CA 91773
Phone: [phone]
E-mail: [e-mail]
Web Site: www.sigtronics.com

SIGTRONICS S-20H HEADSET PARTS IDENTIFICATION BREAKDOWN
ITEM P/N DESCRIPTION ITEM P/N DESCRIPTION ITEM P/N DESCRIPTION
1100049 GROMMET, 5/16 INCH, RUBBER 14 100367 YOKE, EAR CUP MOUNT, METAL 27 100384 BRACKET, YOKE SUPPORT WITH TANG
2100360 KNOB, BLACK, VOLUME 15 100368 KNOB, MICROPHONE BOOM ADAPTER, PLASTIC 28 100385 WASHER, SPRING, BOOM ADAPTER
3100365 POTENTIOMETER, 2K 16 100369 EAR SEAL, FOAM FILLED 29 100408 WASHER, GROOVED BOOM
4100858 RECEIVER AND MOUNT, 300 OHM, MONO 17 100371 MICROPHONE CABLE CLIP 30 800046 CABLE, HEADSET, HELICOPTER, COILED
5100108 SCREW, 4 X 1/4, THREAD FORMING 18 100156 SCREW, THUMB, MICROPHONE BOOM, 2-56 X 1 31 800039 CABLE, MICROPHONE BOOM, 12 INCH
6100249 BOOM, ELECTRET MICROPHONE SUPPORT, SWIVEL 19 100373 SLIDE, YOKE BRACKET, LONG, NYLON 32 800149 HEADBAND , WITH CUSHION, S-20
7100251 E-RING, EAR CUP TO YOKE RETAINER 20 100374 FOAM, SOUND ATTENUATING. NOTCHED, 1/2 INCH 33 M-80H MICROPHONE, ELECTRET, HELICOPTER
8100252 NUT, HEX, 8-32, LOCKING 21 100376 FOAM, SOUND ATTENUATING. RECEIVER HOLE, 1/2 INCH 34 100569 STRAIN RELIEF, CABLE
9100401 EAR CUP, PRINTED AND DRILLED, MIC & NON MIC SIDE 22 100379 FOAM, SOUND ATTENUATING, RECEIVER COVER, 1/4 INCH 35 900084 WINDSCREEN, MICROPHONE
10 100362 CLIP, CROSS-OVER, WIRE, PLASTIC 23 100366 WIRE, 2 CONDUCTOR, #24, BLACK, 28 INCHES 36 100221 WIRE, #22, 19 STRAND, 4 INCH
11 100363 SCREW, 8-32 X 1/2, PHILLIPS HEAD 24 100258 CLIP, HEADBAND GUIDE, PLASTIC 37 100257 OPTIONAL – HEADBAND, METAL, LARGE
12 100364 SCREW, 8-32 X 3/8, PHILLIPS HEAD 25 100393 CLIP, ANTI-ROTATION, YOKE, PLASTIC 38 100618 OPTIONAL – HEADBAND, METAL, YOUTH
13 100377 SCREW, 8-32 X 5/8, PHILLIPS HEAD 26 100383 HEADBAND, METAL, STANDARD 39 100402 OPTIONAL – EAR SEAL, GEL FILLED
2-11-2015
s-20h.pdf
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