Lenovo ThinkPad 770 Technical Reference Manual for the ThinkPad 770 - Page 66
Audio Port Specifications, Audio Output
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Audio Port Specifications Audio Output: - ⅛-inch mini-jack for headphone - Headphone speaker output: 22 mW (32 ohm) maximum - Maximum output level: 2.4 V pp - Output impedance: 75 ohm Audio Input: - ⅛-inch mini-jack for microphone or line input - Microphone gain: 26-dB minimum, 48.5-dB maximum - Maximum input level: Microphone: 1255 mV pp Line In: 4.0 V pp - Input impedance: Microphone: 47 k ohm Line In: 30 k ohm 3-8 Subsystems
Audio Port Specifications
±
Audio Output:
–
⅛
-inch mini-jack for headphone
–
Headphone speaker output: 22 mW (32 ohm) maximum
–
Maximum output level: 2.4 V pp
–
Output impedance: 75 ohm
±
Audio Input:
–
⅛
-inch mini-jack for microphone or line input
–
Microphone gain: 26-dB minimum, 48.5-dB maximum
–
Maximum input level:
Microphone:
1255 mV pp
Line In:
4.0 V pp
– Input impedance:
Microphone:
47 k ohm
Line In:
30 k ohm
3-8
Subsystems