Dolby Laboratories DP524 - Manual (Page 35)

SECTION 7
DP524 SPECIFICATION
Specifications 1
Italics = nomenclature for panel markings, switch labels, jumpers, LEDs, etc.
All inputs and outputs are TTL compatible unless otherwise stated.
Frequency Response
Lower limit: 20 Hz. Upper limit varies from 8 to 20 kHz depending on algorithm. Tolerance ±
0.3 dB.
Distortion 2
AC-2 Less than 0.1 % at 1 kHz.
Less than 0.2 %, 20 Hz - algorithm upper limit.
AC-3 Less than 0.005 %, 20 Hz - algorithm upper limit.
Dynamic Range
Greater than 108 dB (encode/decode, digital I/O).
Greater than 100 dB (encode/decode, analog I/O).
Crosstalk
Less than - 120 dB @ 1 kHz
Level Stability
AC-2
Better than 0.2 dB.
AC-3 Better than 0.01 dB.
Audio Coding Method
Dolby AC-2 or AC-3
3
Time Delay
Varies with algorithm. Contact Dolby Laboratories.
External Timing
External clock range: ±100 ppm of total data rate; RS-422 input (balanced voltage digital
interface, 50% D.C. per RS-449 specification).
Audio Sample Rate
32 kHz, 44.1 kHz or 48 kHz (AC-3).
48kHz (AC-2).
Test Tone Generator
Digital equivalent of approximately 1 kHz sine wave at. Actual frequency dependent on output
sample rate. Level is -18dB Full Scale.
Analog Audio Output
3-pin XLR-type male. Active balanced output, 22 ohms, adjustable up to +24dbu Full Scale.
1
Subject to change without notice.
2 Measured with an Audio Precision System One.
3
Patents Pending Worldwide.
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