Grass Valley 8920ADC v.2.0 - Manual (Page 14)

8 8920ADC Instruction Manual
8920ADC Analog Audio to AES/EBU Converter
Figure 5. Module Configuration Switches and LEDs
Output Level Adjustment
To correctly adjust the 8920ADC for your digital application, determine
your maximum operating level and set the Coarse Level gain jumpers as
described below. This is the level above which digital clipping occurs.
Example Maximum Operating Level Setting
+24 dBu is a common maximum level. Using +24 dBu as the maximum
level, refer to
Table 4 on page 9 to select the lowest input level range that
includes the maximum level of +24 dBu. Select the Coarse Level Setting pin
4 to 5 jumper setting (refer to
Figure 5 ) because it is the highest level sup-
ported by that range and requires the least amount of gain to bring +24 dBu
up to 0.0 dBFS level. This will give the best signal-to-noise ratio that the
system can deliver.
SW1 – Function Rotary Switch
SW2 – Left In Level
SW3 – Right In Level
CONF (yellow)
0595_05r1
JP7
LOCAL –
REMOTE –
jumper across these pins
(1 – 2) locks out remote control
jumper across these pins
(2 – 3) enables remote
and local control
Remote Control Lockout
JP5
Pins
Pins
JP5
JP7
JP6
JP6
Coarse Level Setting
1-2 2-3 4-5 5-6
1-2 2-3 4-5 5-6
1
3