David Clark H9140-HT User manual

19602P-31 (05-17) 2017 DAVID CLARK COMPANY INCORPORATED
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M
Mo od de el l H H9 91 14 40 0- -H HT T
(
(P P/ /N N 4 40 08 89 97 7G G- -1 10 0) )

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READ AND SAVE THESE INSTRUCTIONS. Follow the instructions in this installation
manual. hese instructions must be followed to avoid damage to this product and
associated equipment. Product operation and reliability depends on proper usage.
DO NOT INSTALL ANY DAVID CLARK COMPANY PRODUCT THAT
APPEARS DAMAGED. Upon unpacking your David Clark product,
inspect the contents for shipping damage. If damage is apparent,
immediately file a claim with the carrier and notify your David Clark
product supplier.
ELECTRICAL HAZARD
-
Disconnect electrical power when making any
internal adjustments or repairs. All repairs should be performed by a
representative or authorized agent of the David Clark Company.

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he Model H9140-H is an audio/communication headset for the David Clark Digital Intercom
System. It operates as a standard communication headset with talk/listen capabilities, and is
also equipped with hear-through functionality that allows the user to hear ambient sound
outside of the headset while being worn. he headset will also limit the ambient sound
amplification level to prevent hearing damage.
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he H9140-H Headset will automatically turn on when connected to a powered Series 9100
Digital Intercom system. here are three buttons on the right (non-boom) side of the headset.
System Communication Volume
here are six (6) distinct system communication volume levels. he Up button turns the
communication audio and side-tone up. he Down button turns the communication audio and
side-tone down. When either the top or bottom volume threshold is reached, an audio indicator
tone will beep when the up or down button is pressed again (see Table 1: Button Operations)
Hear-through Functionality
A shor press of the hear-through button will cycle through three different volume levels, from
lowest to highest. Upon excessively loud or impact noise (e.g., munitions firing), the circuit will
instantaneously clamp the hear-through level (85dB nominal.)
A long press of the hear-through button will turn on/off the hear-through functionality,
accompanied by an audible, 4-tone chime (see Table 1: Button Operations)
Push-To-Talk (PTT)
here is also a tactile button on the Microphone Boom. his is a push-to-talk (P ) switch that
can be configured by the Digital Intercom system (see Operation Manual, Series 9100 Digital
Intercom System, document p/n 9549P-3 , for programming options.)

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Bu on Symbol Ac ion Reac ion
Hear
-
through function
Short Press
Cycle through ambient sound amplification
levels
•Single beep accompanies each level
Long Press
urn on/off
hear
-
through function
•4-tone ascending chime: turn on
•4-tone descending chime: turn off
Up (comm volume)
Press
urn comm volume up
•Single beep when maximum volume level
reached
Down (comm volume)
Press
urn comm volume down
•Single beep when minimum volume level
reached
Table 1: Bu on Opera ion
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he H9140-H Headset is not user serviceable. Do not attempt to open the headset. If this
product requires service, please contact the David Clark Customer Service department:
•Phone: [phone]
•E-Mail: [e-mail]
•By Mail: Customer Service
David Clark Company
360 Franklin Street
Worcester, MA 01604
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Re ep pl la ac ce em me en nt t/ /S Sp pa ar re e P Pa ar rt ts s
•Microphone, M-2H (150 ohm) P/N: 09168P-76
•Screen, Wind, Mic P/N: 40062G-06
•Windscreen Cover w/ ie P/N: 18792G-04
•
• Undercut Gel Earseal (pair) P/N: 40863G-02
•
• Support Assembly P/N: 10370G-03
•
• Screen, Wind, Mems Mic Kit (2 Per) P/N: 40062G-07
•
• (Optional) High-Wind Mic Cover Kit P/N: 41090G-24