User manual BOSE AVIATION HEADSET X

[. . . ] The Bose® Aviation Headset Owner's Guide AM270261_00 V. pdf May 16 2003 DECLARATION OF CONFORMITY We, the offerer: Bose Corporation, The Mountain, Framingham, MA 01701-9168 USA Acknowledge our sole responsibility, that the product: Kind of equipment: Bose® Aviation Headset Type Designation: AHX-32-0# and AHX-34-0# In accordance with EMC Directive 89/336/EEC and Article 10(1) of the Directive, is in compliance with the following norm(s) or documents(s) Technical regulations:EN55013, EN55020 Accredited by: Bose Corporation, The Mountain, Framingham, MA 01701-9168 USA 15 June 2003 Bose Products B. V. Nijverheidstraat 8, 1135 GE Edam The Netherlands Nic Merks Vice President, Europe Manufacturer's authorized EU representative 2 AM270261_00 V. pdf May 16 2003 Cautions and Advisories Operational advisory The Bose® Aviation Headset is an active noise reducing (ANR) headset. As with any complex electronic device, it is possible for this headset to fail during operation. Symptoms of failure may include loud tones, distortion, and loss of communications signal in the headset when used in the ANR mode. [. . . ] Make sure the broad side of the microphone is facing your lips. Do not purse your lips. 3. Operating the battery powered headset If your headset is battery powered, read the control information below. If your headset is aircraft powered, refer to "Operating the aircraft powered headset" on page 23. The battery powered headset uses AdaptiSenseTM headset technology to supply the power your headset needs at any given time. Smart shutoff turns off the circuitry several minutes after you remove the headset. This maximizes available energy for longer life from the two batteries. A tri-color LED provides real-time battery status. Its brightness is adjustable for day/night operation. 20 AM270261_00 V. pdf May 16 2003 Using Your Headset Power button Use the power button to turn the headset on or off, or to change the LED brightness (Figure 18). · Press the power button once to turn on ANR. · Press and hold the power button to turn off ANR. Or rely on the smart shutoff feature (descibed on page page 13). Note: For details on how to disable smart shutoff, see "Changing the optional operation switches" on page 13. · Press twice rapidly to toggle between the daytime (brighter) and nighttime (dimmer) LED settings. Figure 18 The LED, volume control knobs, and power switch on the control module of a battery powered headset Battery power indicator Volume control (left ear) Volume control (right ear) On/Off control symbol Power button for On/Off and LED brightness setting LED brightness control symbol Volume control Notice the individual earcup controls Separate knobs on the control module control the volume for each separate earcup (Figure 18). Overall headset volume control requires adjustments at both the aircraft intercom or radio and at the headset control module. Even at its lowest setting, neither knob on the control module can completely turn off the volume. CAUTION: Avoid setting the volume levels too high. Exposure to loud sounds may cause hearing damage. 21 AM270261_00 V. pdf May 16 2003 Using Your Headset Holding the control module upright and facing you: · Use the left knob to adjust volume in the left earcup. · Use the right knob to adjust volume in the right earcup. Controlling the volume of a single battery powered headset With ANR on: 1. Set the aircraft communication system to a safe operating level. Turn each volume knob on the headset control module down to decrease, or up to increase the volume of the earcup it controls. Volume control using multiple headsets When an aircraft has more than one headset connected to its audio system, the pilot in command should adjust the volume of his/her Bose® Aviation Headset as follows: 1. [. . . ] · If your headset is aircraft powered, make sure that the voltage powering the headset is greater than 10 VDC. · Inspect the seal between the ear cushion skirt and the earcup. The skirt should fit into the slot on the earcup with no gaps. Replace any cushions that have surface tears, torn stitching joints, large wrinkles, or have become dried and stiff. [. . . ]