Service manual

Appendix C Functional Description C-21
Note – Specifications listed in TABLE C-3 assume that the audio tool format setting,
“CD-ROM or DAT” is selected. Also, the microphone input specifications listed in
TABLE C-3 are for the SunMicrophone II.
TABLE C-2 Audio Port Functions
Port Function
Headphones Connects stereophonic headphones for private listening of audio
output
Line Out Connects the system audio output to an external stereophonic
amplifier and loudspeakers
Line In Connects external stereophonic audio sources such as a compact
disc player or cassette tape player to the system
Microphone Connects the SunMicrophone II (or other suitable microphone
1
)to
the system
1. The Ultra 2 series microphone port accepts stereophonic input; however, the Sun Microphone II is a
monophonic device. Note also that the older SunMicrophone is not compatible with the Ultra 2 Series
system.
TABLE C-3
Audio Inputs and Outputs
Stereo I/Os Specifications
Line In 2V typical, 4V max.; 5-50-ohm impedance
Frequency Response 20 Hz to 17 kHz (+/- 0.5 dB)
Internal CD Input
Input Level 0.1 Vrms typical at 10 kohms; 2Vpp max.
Distortion 0.01percent, typical at 1 kHz
S/N Ratio 84 dB, typical IEC 179 A-weighted
Frequency response 20 Hz to 17 kHz (+/- 0.5 dB)
Microphone Input 15 mV typical, 0.6 to 1.0 kohm impedance;
+5 VDC input bias through a 2.2-kohm resistor
Headphone Output 1V typical, 2.4V max.; 16-ohm to 1-kohm impedance
Line Out 1V typical, 2.4V max.; 5-ohm to 50-kohm impedance