Bose X Instrukcja obsługi - Strona 32

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ECHNICAL

NFORMATION

Sound pressure levels (SPL) are relative to 20 micropascals.

Headphone

Impedance

Frequency

response

Microphone

(Electret)

Microphone

(Dynamic)

Maximum ambi-

ent noise level

Power source

Battery life

Current

Fuse/breaker

recommended

Damage could occur to avionics equipment

that is intended for use only with 600-ohm

headsets. If in doubt, consult the avionics

equipment manufacturer.

Monaural mode: 160 ohms (ON) and 230

ohms (OFF) at 1 kHz

Stereo mode: 320 ohms (ON), 460 ohms (OFF)

15 Hz to 15 kHz

Sensitivity: 90 dB SPL typical, measured at

1 mw, 1 kHz, full volume on KEMAR ear

simulator

Bias required: 8 to 16 VDC through 220 to

2200 ohms

Sensitivity: Varies depending upon bias and

radio AC input impedance. Typical output is

600 mV at 114 dB SPL. To assure proper

modulation of the radio, it is recommended

that an avionics technician adjust its input to

match the output of the microphone.

Impedance: 5 ohms

Sensitivity: Equivalent to M-87/M-101

115 dBC and 105 dBA SPL

Battery powered: 2 AA alkaline, IEC LR6

Aircraft powered: 10 to 32 VDC

Alkaline: Up to 40 hours in typical general

aviation aircraft noise. Battery life varies with

ambient noise level, temperature, ear cushion

condition and age of batteries.

Operating: 25 ma in typical aircraft noise

-amp, fast-blow fuse (AGC

-amp circuit breaker

-amp fuse) or