5. Specification
1) Nominal Impedance (AC): 32Ω±15%
2) Rated working power: 10mW
3) Effective frequency range: 20Hz-20KHz
4) Microphone sensitivity: -42±3dB
5) Headset sensitivity: 115±3dB
6) Sound distortion: ≤3%
6. Common Problems
Q1: No sound in headset.
Solution: Ensure the connection is correct; ensure USB port of your
computer is in good condition; ensure the 3.5mm audio connector
Summary of Contents for D312U
Page 1: ...Telephone Headset D312U...
Page 5: ...3 Connection...
Page 7: ...Step 2 Input Audio in Windows Settings and then choose Manage audio devices...
Page 8: ...Step 3 In sound options choose D312U in the list of Playback and Recording D312U...
Page 10: ...Step 2 Select Sound from the list...
Page 11: ...Step 3 In sound options choose USB Audio Device in the list of output and input...
