Grass Valley ADC-1722 - Manual (Page 5)

GUIDE TO INSTALLATION AND OPERATION
ADC-1722 | 5/22
1 ADC-1722 Dual Analog Audio to AES Converter
1.1 Introduction
The ADC-1722 is a high-quality, 24-bit, analog audio to digital converter which allows conversion of two
stereo analog audio signals to AES type digital signals. Sampling rates can be set to 32, 48 or 96 kHz. AES
outputs can be locked an external reference signal. An internal digital EBU tone generator facilitates
alignment of audio levels. User-defined channel identification data may be encoded in the AES status bits.
An input audio signal status is also available indicating the input signal presence or overload. The ADC-1722
is compatible with both AES3 and AES-3id digital audio standards and is housed in a Densité frame, 2 or 3
RU. A single or double-width rear panel is required.
1.2 Features
• (1 or 2) balanced analog audio inputs
• external reference loop input (Word Clock or AES3-id DARS)
• (2 or 2x2) AES digital audio outputs
• Balanced AES3 or unbalanced AES3-id outputs
• 24-bit A to D conversion
(16, 20 or 24 bits output word length)
• 32, 48 and 96 kHz sampling rates
(Optional VCXO for 44.1/88.2 kHz)
• -96 to +12 dB of level adjustment (in 0.5 dB steps)
• 0 dBFS selectable (0 to +28 dBu, 1 dB steps)
• Internal EBU tone generator
• No signal delay threshold adjustable
• Overload detection and reporting
• Settings and adjustments through frame control panel
• Status LED and remote reporting
• Provides output to Monitoring Switching Bridge option (MSB-1121)
o Not supported for Assy# starting at 0696-1200-400
• Supports REF-1701 or REF-1801 reference card
o jumper selectable for Assy #0696-1200-2xx
o automatic for Assy# starting at 0696-1200-400