User manual SENNHEISER HMEC 461

[. . . ] Instructions for use HMEC 460 Contents Safety instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 The HMEC 460 headset . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 Delivery includes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 Overview of operating elements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [. . . ] 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. ¸ If the microphone is worn on the right side of the mouth: Set the boom switch ¸ to the position "R". If the microphone is worn on the left side of the mouth: Set the boom switch ¸ to the position "L". 17 Positioning the microphone towards the corner of the mouth The microphone boom is flexible, so you can position it individually. Bend the microphone boom so that the microphone is placed at the corner of the mouth. 2 cm between microphone and mouth. 18 Using the headset Switching between mono and stereo mode The operating control is fitted with a mono/stereo switch, which allows you to switch between mono and stereo mode to suit the aircraft radio / audio panel / intercom installation. ¹ If the audio panel, intercom system or radio installation in your aircraft is mono: Set the mono/stereo switch ¹ on the operating control to position "k" (mono). The RT and or intercom will be heard in both ears. If the audio panel, intercom system or radio installation in your aircraft is stereo, for example if there is a music player such as a CD player installed in the panel: Set the mono/stereo switch ¹ on the operating control to position "k (stereo). k" The left and right channels from the audio panel will be fed to the corresponding sides of the headset. Notes: ­ If you set the mono/stereo switch to "k (stereo) and you find that you only hear k" RT or intercom in one side of the headset then you should set the mono/stereo switch to "k" (mono). 19 ­ Setting the mono/stereo switch to "k" (mono) when the aircraft panel is wired as a stereo system will result in you hearing only the left channel of audio from the panel in both sides of the headset. Depending on how the panel is configured you may not hear some sounds from the panel in this case. Refer to the aircraft operating handbook or a qualified avionics engineer. Adjusting the volume The operating control is fitted with two slide volume controls adjust the volume for the left and right channel separately. Hearing damage due to high volume levels!The headset is capable of producing high sound pressure levels. Higher volumes or longer durations can damage your hearing!Make sure that you can hear critical sounds such as warning alarms. Use the two slide controls to adjust the desired volume. 20 Switching NoiseGard on/off Set the NoiseGard ON/OFF switch ON: to the desired position: "ON" or "OFF". The LED lights up, indicating the battery status (see page 12) or power supply via the on-board DC power supply system. goes off. OFF: NoiseGard is switched off. The LED With the NoiseGard active noise compensation switched off, the headset can be used as a conventional headset. Attaching the cable clip The headphone cable can be fixed by means of the cable clip. [. . . ] 8-25 mA, as per RTCA/DO 214) General data Connecting cable Weight without cable Power supply for NoiseGard Fuse Connectors 1. 5 m, single-sided 370 g 12­35 VDC 1. 5 A fuse 5. 25 mm jack plug (PJ-068 equivalent) for microphone, ¼" (6. 35 mm) jack plug for headphones, XLR-3 plug for NoiseGard mono/stereo switch on/off switch for NoiseGard LED for operation and battery status indicator volume control for headphones operation: -15 °C to +55 °C storage: -55 °C to +55 °C approx. 30 hours with two 1. 5 V AA alkaline-manganese batteries or two 1. 2 V AA NiMH rechargeable batteries Controls Temperature range Operating time 31 Connector assignment XLR-3 plug 1 Power supply for NoiseGard (12­35 VDC+) 2 Ground 3 Not assigned!5. 25 mm jack plug (PJ-068 equivalent) 1 Not assigned!2 Microphone High 3 Microphone Low ¼" (6. 35 mm) jack plug 1 Audio High left 2 Audio High right 3 Audio Low 32 Manufacturer Declarations Warranty The original Sennheiser product you have purchased is covered by a warranty of 10 years. 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