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Framingham, MA  01701-9168

 

SIZE

 

A

 

FSCM 

32108

 

CLASS 

RF

 

 DWG NO. 

273139

 

SHEET

10 of 25 

REV. 

01D

 

5. 

HEADSET COMPONENTS REMOVAL AND REPLACEMENT PROCEDURES 

 

5.1 

Moving Cable/Microphone Assembly to Opposite Earcup 

a. Removal 

1. Using cross-tipped screwdriver loosen three captive screws (3) securing 

cable/microphone assembly (2) to earcup assembly (1) and the decorative cover 
(5) to opposite earcup assembly (1). 

 

2.  Unplug connector connecting the cable/microphone assembly (2) to the jumper 

cable coming off the earcup printed circuit board and remove the 
cable/microphone assembly. 

b. Replacement 

1.  Plug cable connector from the cable/microphone assembly (2) into the jumper 

cable (4) coming off the earcup printed circuit board.  

CAUTION 

Ensure no wires are pinched during reassembly of the electronics cover 
to the earcup assembly. 

2.  Using cross-tipped screwdriver, secure cable/microphone assembly (2) to the 

earcup assembly (1). 

3.  Using cross-tipped screwdriver, secure decorative cover (5) to opposite earcup 

assembly. 

Summary of Contents for TriPort TTH

Page 1: ...DATED TTHS2 TT BATT LIFE TO 240 HRS AM 09 10 01C UPDATED TTHS2 VOLT RANGE AM 07 11 01D VARIOUS UPDATES AM 10 11 APPLICABLE DOCUMENTS DOC LVL DRAFTER A MANGIAMELI DATE 02 05 04 FRAMINGHAM MA 01701 9168...

Page 2: ...r the left or right earcup In addition to passive attenuation each earcup contains an independent ANR system The ANR system reduces background noise within each earcup The talk thru circuit TTC allows...

Page 3: ...ration allows 2 way communications with loss of voltage input or talk through power 13 5 to 32 VDC 38 mA Peak except during turn on Fail safe operation allows 2 way communications with loss of voltage...

Page 4: ...y has a three position push to talk PTT switch as well as a two position talk thru circuit TTC switch as shown in Figure 2 0b and 2 0c The PTT switch is mounted on the face of the control module and i...

Page 5: ...vehicle intercom The OFF center position allows the user to listen only The Momentary down position allows the user to communicate on the vehicle intercom and the selected radio Please note that thes...

Page 6: ...ercom channel or radio The latched position allows the user to communicate on the vehicle intercom The OFF center position allows the user to listen only The Momentary down position allows the user to...

Page 7: ...n Function 1 2 3 4 5 6 7 Shield PTT Ground power and audio Boom mic Ground Left Right earcup audio Boom mic Signal Power Binaural Pin Function Shield Contact 1 2 3 4 5 6 7 Shield Right earcup audio PT...

Page 8: ...CUPS END CONNECT HEADSET TO KNOWN WORKING INTERCOM RADIO REPLACE TTC BATTERY pg 14 IS FAULT STILL PRESENT IS FAULT STILL PRESENT SUBSTITUTE CABLE MICROPHONE ASSEMBLY WITH KNOWN WORKING ONE pg 13 REPLA...

Page 9: ...m in Earcup Check for tears or excessively dirty Replace scrim Cables Check for cuts kinks or frayed area on cable Replace cable mic assy Connectors Check for dents or other physical damage Corrosion...

Page 10: ...Unplug connector connecting the cable microphone assembly 2 to the jumper cable coming off the earcup printed circuit board and remove the cable microphone assembly b Replacement 1 Plug cable connect...

Page 11: ...nside earcup between scrim 2 and earcushion and firmly pulling out Remove any excess tape residue from the earcup surface 2 Remove scrim 2 after earcushion 1 is removed b Replacement 1 Align scrim 2 a...

Page 12: ...2 between thumb and forefinger and slide O ring 2 and windscreen 3 off microphone 1 2 Separate O ring 2 from windscreen 3 CAUTION When placing windscreen O ring on microphone be careful not to tear wi...

Page 13: ...hex Allen type wrench remove screw 3 securing overhead strap 2 to earcup assembly 1 b Replacement Place screw 3 through opening in end of overhead strap 2 and use a hex Allen type wrench to secure to...

Page 14: ...onnecting the cable microphone assembly 2 to the jumper cable coming off the earcup printed circuit board and remove the cable microphone assembly b Replacement 1 Plug cable connector from the cable m...

Page 15: ...ver b TTH Series 2 Battery Removal and Replacement 1 Using flat tipped screwdriver loosen the captive screw on the battery cover and rotate to open the battery compartment Battery door is connected to...

Page 16: ...ies 2 ONLY a Removal 1 Using a flat tipped screwdriver loosen the captive screw securing attachment clip to the control module and remove clip from the control module b Replacement and Adjustment 1 At...

Page 17: ...p on the control module in the desired orientation Rotate the attachment clip 90 degrees in either direction lining up the square feature on the control module with the square hold in the attachment c...

Page 18: ...1 Unplug connector connecting the cable microphone assembly 2 to the jumper cable coming off the earcup printed circuit board and remove the cable microphone assembly 2 Unplug the 3 pin connector con...

Page 19: ...g 2 Plug 3 pin connector from the microphone assembly into the mating 3 pin connector on the cable assembly Ensure connectors are securely seated 3 Plug cable connector from the cable microphone assem...

Page 20: ...Framingham MA 01701 9168 SIZE A FSCM 32108 CLASS RF DWG NO 273139 SHEET 20 of 25 REV 01D Appendix A Additional Technical Information...

Page 21: ...and potential 36V above ground is applied to the power line The pulse repetition rate shall not exceed 1 pulse every 10ms Ripple and noise The headset shall operate through and reject power supply rip...

Page 22: ...Functional Characteristics TTH TTH Series 2 Active ANR 3 Selectable Talk through 3 3 Powered Output Level 3 Powered Frequency Response 3 Inactive microphone preamplifier output 3 Not Applicable Unpow...

Page 23: ...outs described in Section 3 0 of this document Input Impedance The headset shall not cause damage to the intercom audio circuits under any circumstances The audio input impedance of the headset assemb...

Page 24: ...talk through circuit to permit monitoring of the ambient sound field and direction finding When mounted on a simulated real head fixture mannequin at 22o C 50 RH the TTC shall produce gain of 0 6dB w...

Page 25: ...en swept from 300 Hz to 4500 Hz Talk Through Circuit TTC The headset shall incorporate a talk through circuit to permit monitoring of the ambient sound field and direction finding When mounted on a si...

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