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6

To Enable Auto Shut Off

The ENABLE position provides automatic shut off of power to the ENC system if the 

headset is unplugged or the aircraft audio system power is turned off. To operate 

the Auto Shut Off switch remove the battery, and using a small pointed tool gently 

move the switch to the desired position. Replace battery (see Fig. 1).

Power Indicator

A bi-color LED, mounted on the top of the battery pack indicates the status of the 

battery (see Fig. 2).
When the battery is good and the headset is powered, the LED will blink 

green 

approximately once per second. When the battery is low, the LED will be 

red 

until 

the battery is fully discharged (see Fig. 2).

9V

AUTO SHUT OFF

ENABLE

DISABLE

View into the battery compartment, 
showing Auto Shut Off switch

View of the top of the battery module, 
showing LED

Fig. 2

Fig. 1

Содержание ENC

Страница 1: ...ELECTRONIC NOISE CANCELLING HEADSETS OWNERS MANUAL ...

Страница 2: ...ed on the premise that our relationship is one of mutual honesty requiring that we respond in a prompt positive manner to anyone who contacts us David Clark Company communication equipment has evolved to a performance level of excellence that is appreciated by quality conscious people throughout the world We strive constantly for excellence in design and performance and have a positive attitude to...

Страница 3: ... protect Unlike passive headsets David Clark s electronic noise cancellation headsets use an electronically produced signal to cancel the offending noise Low frequency noise is sensed and an opposing signal of the same sound level is generated The result is cancellation of the noise before it reaches your ears Hear what s important With low frequency noise canceled you ll hear essential communicat...

Страница 4: ... 5dB SPL on flat plate coupler re 1mW input 1 KHz Frequency Response 350 3 000 Hz 6dB re 1 KHz Impedance Monaural 150 Ω nominal Stereo 300 Ω nominal per side Does not apply to H10 76XL series Microphones M 7A Incremental DC and Dynamic AC 50 Ω 20 Sensitivity 400 mV 6dB into 150 Ω AC load 1 KHz for 114dB SPL input M 101 Low Impedance Position 5 Ω nominal sensitivity 07 14 mV 103 dB SPL into 5 Ω loa...

Страница 5: ...e XL 9V features an Auto Shut Off function to save the battery if the power switch is left on when the headset is not in use The Auto Shut Off feature operates by sensing loss of microphone DC bias voltage when the headset is unplugged or aircraft audio system is shut off A switch is provided inside the battery compartment see Fig 1 to control the Auto Shut Off feature The XL 9V is shipped from th...

Страница 6: ...osition Replace battery see Fig 1 Power Indicator A bi color LED mounted on the top of the battery pack indicates the status of the battery see Fig 2 When the battery is good and the headset is powered the LED will blink green approximately once per second When the battery is low the LED will be red until the battery is fully discharged see Fig 2 9V AUTO SHUT OFF ENABLE DISABLE View into the batte...

Страница 7: ...y insert back of battery into battery compartment making sure to position the smaller positive terminal over the keying ribs in the front of the battery compartment see Fig 4 Press contact end of battery firmly until battery is seated in the battery compartment fully To remove battery lift up on the back of the battery and slide out of battery compartment 1 SLIDE COLLAR BACK 2 PULL 1 LINE UP KEYWA...

Страница 8: ...ut can be tightened for consistent fit to your head Microphone Protector P N 40062G 02 Volume Controls Dual volume controls Select a comfortable listening level for each ear Both sides are wired for unidirectional operation Roll forward roll reverse produces the identical result in each ear cup regardless of microphone placement Undercut Comfort Gel Ear Seals P N 40863G 02 IMPORTANT NOTE All Gener...

Страница 9: ... 40863G 02 Exclusive Patented Flex Wire Boom Rotates for left or right side positioning Detented for precise control Wire slide allows easy repeatable microphone placement Volume Control Low profile knob to prevent accidental changes Lets you select a comfortable listening level Headband Locknut When the headset is adjusted comfortably the locknut can be tightened for consistent fit to your head H...

Страница 10: ... for precise control Wire slide allows easy repeatable microphone placement Headband Locknut When the headset is adjusted comfortably the locknut can be tightened for consistent fit to your head Headpad Assembly P N 40688G 36 Dynamic Microphone P N 09168P 18 Volume Control Low profile knob to prevent accidental changes Lets you select a comfortable listening level Undercut Comfort Gel Ear Seals P ...

Страница 11: ...ch One 9V battery provides up to 25 hours of operation Removable placement belt clip included Military Portable Battery Pack XL 9V M P N 40862G 06 W1 9 x H3 2 x D1 21 This Portable Battery Powered Module is included with all H10 66XL H10 76XL Model purchases One 9V battery provides up to 25 hours of operation Module comes with a durable rotating belt clip included Permanent Panel Mount Module XP P...

Страница 12: ...r ear seals cradle the ears with unsurpassed comfort Compatible with all David Clark Company headsets P N 40863G 02 1pair NSN 5965 01 516 8082 Microphone Protector Cloth mic muff with drawstring Protects microphone from moisture Fits all microphones M 101 M 87 P N 18434G 02 NSN 5965 01 438 6928 M 7A P N 40062G 02 NSN 5965 01 424 3296 ACCESSORIES 12 ...

Страница 13: ...bands or other parts 4 Storage in direct sunlight or at high temperatures or cleaning in non recommended cleaning solutions may shorten the useful life of the headset 5 Each individual s body chemistry is different Perspiration body oils and hair grooming cosmetics may affect materials loss in elasticity or softness of ear cup seals and of the foam pads inside ear cups may result Replace parts imm...

Страница 14: ... Simply return the product to the following address for evaluation and service David Clark Company Inc c o Customer Service 360 Franklin Street Box 15054 Worcester MA 01615 0054 U S A Note please include your name return address a daytime telephone number and a brief description of the problem For more information please call Customer Service directly at 1 800 298 6235 service davidclark com Visit...

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