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Specifications

Receivers

Type: Dynamic
Impedance: Accepts 150-600 Ohm sources
Frequency Response: 350Hz -3.0kHz ±6dB
Sensitivity: 90 ±5dB SPL for 1mW, 1kHz input
Maximum Power Input: 30mW

Microphone/Amplifier Assembly

Microphone Type: Noise-cancelling electret condenser
Output Impedance: 

50 Ohms (designed for radio input impedances from 50-600 Ohms

Frequency Response: 100Hz – 3.5kHz
Sensitivity: -53 +2/-1dB (ref: 1V/

μ

bar)

Operating Voltage: 8-16 Vdc

Cords and Plugs

Air 3500, general aviation version:

Cord: 5.5ft (1.7m) “Y” cord with stereo/mono selector switch
Receiver Plug: 1/4” stereo phone plug
Microphone Plug: PJ-068 equivalent

Air 3500HE, Helicopter version:

Cord: 5.5ft (1.7m) coiled cord
Plug: TP-120, U-93A/U, U-174/U equivalent

Summary of Contents for Air 3500

Page 1: ...User Instructions Air 3500 Noise Reduction Headset 38110 012 Rev C 10 2010...

Page 2: ...sch Security Systems Inc All rights reserved Reproduction in whole or in part without prior written permission from Bosch is prohibited WARRANTY AND SERVICE INFORMATION For warranty and service inform...

Page 3: ...3 Air 3500 Noise Reduction Headset FIGURE 1 Air 3500 Noise Reduction Headset...

Page 4: ...4 Air 3500 Noise Reduction Headset...

Page 5: ...Side Microphone Placement 5 Permanently Changing Microphone Side 5 Connection 6 Stereo Mono Switch fixed wing version only 7 Volume Adjustment 7 Microphone Gain Adjustment 8 Ear Cushion Replacement 8...

Page 6: ...2...

Page 7: ...earcup sliders up or down on the headband Size is properly adjusted when the earcups are centered over the ears IMPORTANT It is important to adjust both sides of the headband the same to keep the hea...

Page 8: ...essure setting do the following 1 Fold the earcup in as shown in Figure 2 2 Rotate the Comfort Cam adjust knob to the desired setting 3 Repeat for the other earcup IMPORTANT Both sides of the headband...

Page 9: ...eshape the boom so the microphone is at the corner of the mouth Permanently Changing Microphone Side To permanently change the side of the headset the microphone is on do the following 1 Press the rel...

Page 10: ...Using Figure 5 connect the headset to the aircraft radio or intercom system FIGURE 4 Mic Element Rotation FIGURE 5 Air 3500 Connectors RELEASE CATCH MIC ELEMENT To Radio Headset Jack AIR 3500 HELICOP...

Page 11: ...ystems OR Set the switch to mono for monaural intercom system or for direct connection to the aircraft radio Volume Adjustment To adjust the volume do the following When the microphone is worn on the...

Page 12: ...river in the mic element Figure 6 2 Rotate the trimmer clockwise to increase the gain Ear Cushion Replacement To remove an old ear cushion do the following Grasp the old ear cushion and pull it off th...

Page 13: ...headband IMPORTANT Make sure the overhead cord is inside the flaps of the head pad 5 Snap the flaps closed Mic Element Removal To remove the mic element do the following 1 Press the release catch on...

Page 14: ...condenser Output Impedance 50 Ohms designed for radio input impedances from 50 600 Ohms Frequency Response 100Hz 3 5kHz Sensitivity 53 2 1dB ref 1V bar Operating Voltage 8 16 Vdc Cords and Plugs Air...

Page 15: ...800027 002 Gel filled Ear Pads set of 2 1 9 700498 000 Foam Top Cover 4 10 51856 003 Screw Plastite 2 56 x 5 4 11 590055 001 Headphone Driver Assembly 2 12 700487 004 Foam Liner 2 13 700487 002 Foam...

Page 16: ...12 FIGURE 8 Exploded View for Parts Replacement 1 2 3 4 5 6 8 7 9 10 11 12 13 16a 17 14 16c 19 20 22 21 18 16b 15b 15c 15a 23...

Page 17: ...ersion RED BLK WHT RECEIVERS 5K 5K BLK WHT BLK MICROPHONE 1 2 WHT BLU RED BLK STEREO MONO SWITCH 1 3 2 1 3 2 300 300 WHT OVERHEAD Boom Side Non Boom Side RED BLK WHT RECEIVERS 5K 5K BLK WHT BLK MICROP...

Page 18: ...Bosch Security Systems Inc 12000 Portland Ave South Burnsville MN 55337 U S A www boschcommunications com...

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