Firecom FHW-Series, Руководство по эксплуатации

Страница: 10 / 12

8
Care and Maintenance
To ensure hearing protection and user safety, repairs or replacement of the headset should be
immediately sought if you see any defect such as holes or cracks in the ear domes, ear seals
or headband.
Body oils, perspiration and hair care products will, over time, affect the ear seals. Inspect the
ear seals frequently for signs of wear and replace at approximate 6 month intervals along with
the mic muff (cover).
Do not remove the foam speaker cover
Never remove the charging cable from the headset by pulling on the cord.
The headset should be unplugged at the jack location by pulling the
charger plug from the jack.
Wipe headset and ear seals with a mild soap and water mixture only. NEVER IMMERSE
ANY PART OF THE HEADSET IN WATER. Although the microphone is water resistant, to
ensure a longer life, keep the microphone away from moisture, when possible.
Do not store in direct sunlight or in areas of high temperature.
Specifications
Headset
Sensitivity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .104dB re 20 uPa @ 1000 Hz, 1 mW
Frequency Response . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .300Hz - 3.4 KHz,+/- 3dB
Impedance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .32 ohms nominal per speaker
Weight (FHW-Series) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .19.50z
Weight (UHW-Series) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .17.80z
Microphone
Frequency Response . . . . . . . . . . . . . . . .Optimized for speech clarity and noise reduction
Max. Amb. Noise Level . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .125dB SPL re 20 uPa
MIC Sensitivity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .-44+/- 5db, 0dB=1v / Pa
DC Bias . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Internally biased
Frequency range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .300Hz – 3.4KHz
Noise Canceling . . . . . . . . . . . . .approx. 6.25 db /octave from 3.4 KHz down to 300 Hz
S / N ratio . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .60db minimum
Impedance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Internally matched
RF
- Range: 1500
'
open field.
- Digital encoding for secured communications.
- Interference free communications for up to 50 headsets operating in close proximity.
- Immunity to interference from other communications devices operating in the entire
frequency spectrum from 30 MHz – 18 GHz.