VXI Headphones P41TR User Manual

P41TR Headset  
Technical Specifications  
Transmit Specifications  
Microphone:  
Noise canceling electret  
Ambient Noise Suppression: 13 dB @ 1 kHz, typical  
Output impedance:  
Sensitivity:  
Determined by sound card, usually 2.2 kOhms  
-50 dB @ 1 kHz (defined 1" from talk-side, 82  
dB SPL)  
Frequency response:  
Operating Current:  
Operating Voltage:  
100 Hz to 6.3 kHz, optimized for voice  
300 µA max.  
1.0 V DC min. to 20 V DC max.  
Parrott Translator™  
For highest speech recognition accuracy, a factory-adjusted current mirror  
amplifier provides large microphone signal swing without distortion. High pass  
and low pass filtering assures optimum voice frequency response. Isolation  
network prevents legacy sound cards from voltage starving the microphone.  
Batteries may be added to overcome low DC mic bias in certain notebook  
computers. If batteries are needed, the Translator housing will accept two AA  
cells; battery life will exceed 15 months.  
Features  
• Flexible boom  
• Noise canceling microphone  
• Parrott Translatorfor universal  
compatibility  
• Ratchet headband  
• Accurate microphone adjustment -  
to either side of the head  
• Dynamic receiver  
• High quality look and feel  
Receive Specifications  
Speaker:  
Dynamic; 27 mm diameter  
90 db @ 1 kHz, 0.22 V input  
32 Ohms  
SPL:  
Impedance:  
Frequency response:  
Rated input power:  
100 Hz to 6.3 kHz  
10 mW continuous, 100 mW peak  
Mechanical Specifications of VXI  
Computer/Voice Products  
Cables:  
Spiral shielded construction with polyethylene  
insulation and PVC jacket  
Connectors:  
Mic: 3.5 mm stereo plug with tip and ring to  
mic & sleeve to ground. Meets PC99 Audio  
Performance requirements. Compatible with all  
sound cards without an adaptor. Speaker: 3.5  
mm stereo plug with tip and sleeve wired to  
speaker; ring open.  
Microphone boom:  
Flexible, with positioning memory; swivels 30  
degrees and rotates 360 degrees  
Mounting:  
Headband:  
Left or right ear placement  
ABS plastic and elastomer cover with #316  
stainless steel ratchet positioning  
One Front Street  
Rollinsford, NH 03869 USA  
Toll-free (US): (800) 742-8588  
Headquarters: (603) 742-2888  
OEMM/000203r.1  
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