Grass Valley 8921DAC User Manual

Page 42

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42

8921DAC Instruction Manual

Specifications

Performance (+ 24 dBu into 10 k load unless otherwise stated)

Signal/noise ratio

> 104 dB unwatched 22 kHz filter
> 107 dB “A” weighted

THD + noise (swept, 20 to 20 kHz)

< 0.012% 22 kHz filter, + 24 dBu
(< – 78 dB), typical (1 kHz): < – 87 dB

Interchange crosstalk

< – 100 dB, 20 Hz to 20 kHz

Intermediation distortion

< 0.015% CCIF two-tone test
(– 76 dB) 19 kHz and 20 kHz tones

Frequency response

± 0.1 dB, 20 Hz to 20 kHz, relative to 1 kHz @ 48 kHz to 96 kHz

De-emphasis (32 kHz to 48 kHz)

50/15 µs pre-emphasis Automatic, Professional Mode only, no de-emphasis at
output

Minimum delay from input to output

3.8 msec @ 48 kHz in/out sample rate

Delay at maximum delay setting

5.4 seconds @ 48kHz in/out sample rate

Static withstand

5 Kiev (330 Ω, 150 if) for any input or output

Factory calibration

0 dBFS = + 24 dBu ± 0.1 into 10 k Ω
Mode and control switches set to 0

Environmental

Frame temperature range

See frame specification

Operating humidity range

0 to 90% non-condensing

Non-operating temperature

– 10 to 70 degrees C

Mechanical

Frame type

Gecko 8900 Audio

Power

Power consumption

< 7 W, 500 mA @ + 12 V, 150 mA @ – 12V

Table 6. 8921DAC Specifications

Parameter

Value

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