Plantronics EncorePro HW540, Monaural Headset, Noise-Cancelling
Nástupce modelů Plantronics DuoSet H141N/A a DuoPro H171N/A

OVERVIEW
* Choice of three comfortable and easily switchable wearing styles - over-the-ear, over-the-head or behind-the-neck - offers more flexibility from a single headset to suit a wider range of user preferences
* The new design is extremely light, offering users a more discrete headset and improved comfort for longer calls
* Soft, luxurious ear cushions for excellent audio quality, while providing all day comfort
* Visible guidance so the user can see when the boom is moved into the proper range for optimum microphone positioning
* Higher-quality wideband audio meets official TIA920A standards and noise-cancelling microphone help raise the standard of phone conversations
* Quick Disconnect supports multiple connectivities from USB, audio processor or Direct Connect and allows users to easily move away from their workspaces without removing their headsets

SPECIFICATIONS
Connects to
* PC or deskphone with Plantronics audio processors

Ideal for
* Telephone intensive users, informal contact centres (e.g. helpdesks)and enterprise/office telephony users

Type
* Monaural

Audio performance
* Wideband audio (up to 6,800 Hz), noise-cancelling microphone


TRANSMIT CHARACTERISTICS (TYPICAL)
Sensitivity @ 1kHz
* -39 ± 3 dBV/Pa

Frequency Range
* 150 to 6800Hz

Output Impedance:
* < 150 Ω

Typical Test Conditions
* 1.8VDC, 3.3K Ω DC Resis, 3.3K Ω AC Load


TRANSMIT CHARACTERISTICS (TYPICAL)
Frequency Range
* 100 to 6800Hz

Acoustic Limit
* <24dBPa (<118SPL)

Input Impedance
* 150 Ω ± 25%

Typical Test Conditions
* 100mV Drive, 10 Ω Source Impedance. Measured on ITU-T Type 3.3 artificial ear, Ear Reference Point


Compatibility tool
* http://www.plantro.net/compatibility
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