Grass Valley 8921ADT - Manual (Page 7)

8921ADT Instruction Manual 7
8921ADT 4-Channel Audio
A-D Converter with Delay
Introduction
The 8921ADT module offers four independent, audio A-D conversions on
a single module. Four channels of analog audio are converted to two digital
audio streams. Two forms of delay are provided—a fixed delay and a vari-
able delay based on a signal from a video decoder with a frame synchro-
nizer or from a frame sync card.
The 8921ADT features:
• 24-bit ADC A-to-D conversion,
• >105 dB A weighted signal-to-noise ratio,
• The four channels of audio analog to digital conversion has indepen-
dent controls for:
• Channel pairing,
• Level adjustment,
• Output swapping, summation, phase inversion,
• Delay up to 5 seconds for each channel or channel pair, and
• 400 Hz, 1 k Hz, and 1 kHz channel ID test tones.
• Auto-tracking delay of video frame synchronizers (8900FSS and
8981FS),
• Four inputs, two pairs of balanced High Z analog audio inputs,
• Looping reference input supports NTSC/PAL analog color black,
48 kHz AES Word Clock, and 48 kHz AES3-id DARS.
• Optional 8900-A-CBL package of four breakout cables, to convert 3-pin
balanced AES audio to dual 75
Ω BNCs, unbalanced AES audio, and
• Remote control and SNMP alarms with the 8900NET module.