Grass Valley 8920DAC - Manual (Page 14)

8 8920DAC Instruction Manual
8920DAC AES/EBU to Analog Audio Converter
Configuration
The following parameters must be set on the 8920DAC module:
■ Control mode – Local/Remote or Local control only (remote lockout),
■ Output gain – coarse and fine adjustment,
■ 20-bit or 24-bit DAC mode, and
■ Output mode – channel swapping, summing, and phase inversion.
The Control Mode, Output Gain and DAC modes must be configured
locally using onboard jumpers and switches. Output mode can be set
locally with the front rotary switch or can be configured remotely with the
network interface.
Local Onboard Module Configuration
The 8920DAC module must be configured locally to set certain parameters
using the on-board components shown in
Figure 5 on page 9 . The CONF
LED indicates status of the configuration process.
These components perform the following:
■ Jumper JP1 – sets control mode for Local only or Remote and Local.
■ Jumpers JP5 – sets the D-to-A conversion mode to 20- or 24-bits.
■ Jumper JP6 and JP7– set coarse output gain level adjustment for left and
right channels.
■ Left and Right Fine Adjust Potentiometers – provide fine adjustment of
the left and right channel output gain levels.
■ Function (rotary) switch – selects a desired output configuration (0
through 9, A through F), although not all positions are used.
■ CONF (configuring) LED – when on, indicates the module is initial-
izing or processing configuration information. Whenever the Function
Switch is changed, the CONF LED will flash to indicate configuration
is being performed.
Note Function switch positions 0 and F (Factory defaults) can be used to return the
module configuration to the original factory settings.