User manual SENNHEISER HMEC 46-1

[. . . ] With the NoiseGardTM active noise compensation switched on, typical aircraft sounds (for example, those from engines, propellers, warning alarms, etc. ) may sound different to you. Before operating any aircraft, make sure that, with NoiseGardTM switched on, you can hear and recognize these sounds. Set the volume to safe levels that do not interfere with your ability to hear informational sounds and warning alarms. The headset is capable of producing sound pressure levels exceeding 85 dB(A). [. . . ] Set the NoiseGardTM ON/OFF switch » to the desired position: ON: NoiseGardTM is switched on. The LED · lights up, indicating the battery charge status (see page 12) or power supply via the aircraft DC power supply system. Adjusting the volume The two slide volume controls ³ allow you to adjust the volume for the left and right channel separately. Make sure that you can hear critical environmental sounds and warning alarms. Use the two volume controls ³ to adjust the desired volume. 10 Switching between mono and stereo mode The mono/stereo switch ¿ allows you to switch between mono (k) and stereo (k k) mode, depending on the audio system. Set the mono/stereo switch ¿ to the desired position: mono (k) or stereo (k k). Changing the left and right stereo channel The position "R" or "L" of the BOOM switch ´ corresponds to the position of the microphone on the left or right side of the mouth. When the microphone boom is rotated to permit left or right side microphone orientation, the BOOM switch allows you to correctly assign the audio channels (L/R) to the appropriate headphone sides. This enables the correct orientation of the volume controls and any stereo audio signals. Powering NoiseGardTM via two (rechargeable) batteries Insert two 1. 5 V AA alkaline batteries (IEC LR 6) or two 1. 2 V AA rechargeable batteries (IEC LR 6). Observe correct polarity when inserting the batteries. 11 The operating time with batteries/rechargeable batteries is approx. With NoiseGardTM switched on (see page 10), the LED · provides information on the remaining battery/rechargeable battery capacity. Replace the batteries. Activating the "auto shut-off" function The battery-saving "auto shut-off" function automatically switches the NoiseGardTM electronics off when the headset is disconnected from the audio system or when the aircraft avionics are switched off. The headset is delivered ex-works with the "auto shut-off" function deactivated. You can activate "auto shut-off" as follows: Set the switch to the position ASO. 12 Connecting a mobile telephone (cable -BV-K / -BV-KP only) The 2. 5 mm 3-pole jack socket º allows you to connect a mobile telephone. For this purpose, the NoiseGardTM active noise compensation must be switched on and the microphone connector must be connected to the aircraft radio/audio. A suitable adapter for your mobile telephone with 2. 5 mm jack socket is available from your Sennheiser agent. Making telephone calls or operating the mobile telephone limits your attention and may cause accidents. Connect the audio cable to the 2. 5 mm 3-pole jack socket º on the operating control I and to the corresponding jack socket on your mobile telephone. You can adjust the volume of the mobile telephone via the headset's operating control. [. . . ] Grasp the edge of the foam ear pad behind the ear cup as shown and peel it up and away from the ear cup. Repeat for the other ear cup. 15 Accessories and spare parts By changing the cables, you can simply retrofit different operating controls (see "The operating controls of the HMEC 46-1" on page 8 and 9) or connectors (see "Product variants" on page 17). · · · · · · · · · · · · · · Cable -CP Cable -V-CP Cable -B-CP Cable -BV-CP Cable -KP Cable -V-KP Cable -B-K Cable -BV-K Cable -NP Cable -V-RP Cable -BV-KP Cable -B-KP Cable -V-KX Audio cable, length 0. 6 m, 2 x 3. 5 mm stereo jack plug · Cable for mobile telephone, length 0. 6 m, 2 x 2. 5 mm jack plug (3 to 4-pin) · Cable for mobile telephone, length 0. 6 m, 2 x 2. 5 mm jack plug (3 to 3-pin) · MZQ 2002 cable clip · HZC 08 cable clip · Ear pads (1 pair) · Ear pads (100 pairs) · Wind and pop screen · Wind and pop screen (any quantity) · Headband padding (1 pair) 16 Cat. For the current warranty conditions, please visit our web site at www. sennheiser. com or contact your Sennheiser partner. CE Declaration of Conformity This equipment is in compliance with the essential requirements and other relevant provisions of Directive 89/336/EC. [. . . ]