Apple Power Macintosh G3 Technical Information PDF herunterladen (Seite 7)

Noise, distortion, and bandwidth

m Sound input signal-to-noise ratio (SNR): 85 dB unweighted (add +8 dB to estimate

A weighting)

m Total harmonic distortion: 0.05%

m Bandwidth: 20 Hz–20 kHz at 44.1-kHz sample rate (Other sample rates scale the upper

cutoff frequency.)

Sound input using the optional RCA-type audio input ports (-)

m Input impedance (preamplifier off): more than 80 kΩ

m Maximum input voltage (preamplifier off ): 1 V

rms

= 2.8 Volts peak-to-peak (V

), nominal

m Input impedance (preamplifier on): more than 5 kΩ

m Maximum input voltage (preamplifier on): 62 millivolts (mV

rms

) = 175 mV

, nominal

Sound output using the optional RCA-type audio output ports (-)

m Output impedance: 400 Ω

m Maximum output voltage: 1 V

rms

= 2.8 V

, nominal

Noise, distortion, and bandwidth

m Audio input signal-to-noise ratio (SNR): 85 decibels (dB) unweighted (add +8 dB to

estimate A weighting)

m Total harmonic distortion: 0.05%

m Bandwidth: 20 Hz–20 kHz at 44.1-kHz sample rate (Other sample rates scale the upper

cutoff frequency.)

Video system

Video input

m Type: composite or S-video

m Standards supported: NTSC, PAL, and SECAM

m Resolution supported: 320 x 240, which scales to any size up to the size of the monitor

m Polarity: sync negative

m Voltage level: 0.7 V

minimum, 1.0 V

typical, 1.4 V

maximum

m Impedance: 75 ohms (Ω) internally terminated

Video output

m Type: composite and S-video

m Standards supported: NTSC and PAL

m Resolutions supported: 512 x 384, 640 x 480, 800 x 600, and 832 x 624

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