Pilot USA PA-1771T User Manual
Page 4
4
4.0 Technical Specifications
Microphone:
Transducers:
Generating Element - Electret Condenser
Audio Speaker Impedance: 300 ohms
Polar Pattern—Bi-Directional
Nominal Power: 100 mW
Frequency Response—150-4000 Hz
Max Power: 200 mW
Impedance—50 ohms @ 16 VDC
SPL: 102+2dB at 1 KHz
Sensitivity– 100dB @ 1mW Input
Effective DNC Frequency Range: 30 Hz - 8000Hz
Power Requirements— 8-16 VDC
Active Noise Reduction: 18-22 dB at 100 Hz
Current Drain—8 mA at 8 VDC
Maximum Ambient Noise Level: 120 dB SPL
Color/Case Materials —Black ABS
Weight — 6 grams
Mating Connector—U173/u
4.1 FAQs
Some potential problems you may encounter are listed below along with the possible solution.
Problem: Audio is heard in only one ear
Solution: Check Mono/Stereo selector for proper setting.
Problem: Communication, but the ANR system is not working
Solution: Make sure the headset is turned on. Check LED. Check to make sure the battery is fresh.
Problem: ANR works but no communications
Solution: Check the headset and intercom volume controls to see if they are set too low.
Problem: Whistling, squealing or cricket sound
Solution: Check to see that the outer foam pad in still in-place in the center of the ear seal. If the
foam pad is missing, check your headset case to see if it has come loose. If not, contact PILOT.
Problem: “Motor boating” or low rumbling sound with headset turned on in a quiet environment
Solution: This could be caused by a small pressure change - possibly caused by opening a cabin
door or by turning your head and causing a leak between your ear headset and the ear seal. Check
your ear seals for wear. Possibly the headsets were stored improperly and the cushions were
squeezed into an abnormal shape. A low battery can also cause this problem.
Pilot Communications USA
70 Maxwell
Irvine, CA 92618
Toll Free: 1-888-Go-Pilot Tel: 949-748-8880 Fax: 949-748-8881