Grass Valley 8912RDA - Manual (Page 12)

12 8912RDA/RDA-D Instruction Manual
Configuration
The 8912RDA can be configured locally using onboard jumpers.
Configuration establishes:
• Input impedance,
• Balanced or unbalanced inputs, and
• Single- or dual-channel operation (8912RDA-D modules only).
Onboard Module Configuration
The 8912RDA module is configured by setting jumpers shown in Figure 5 .
These jumpers shown perform the following:
• JP5 and JP6 select 75
Ω
, 110
Ω
, or high impedance inputs,
• JP7 through JP10 select balanced or unbalanced inputs, and
• JP4 allows the dual-channel module to be set for either single-or dual-
channel operation.
Table 1. LED Indications for Input Conditions and Resulting Output Signals
Fault
(red)
Lock
LED
Input Condition Output Signal
OFF ON Valid AES/EBU inputs present. AES/EBU serial digital output re-clocked at input sample rate
Flashing OFF Invalid AES/EBU inputs present. The received bi-phase data
Flashing OFF No AES/EBU input signal present No output signal
Flashing ON
AES/EBU input with parity errors or bi-phase encoding
errors, or channel status CRC errors, validity bit set AES/EBU output will not have the error but the data may be
corrupted producing audio pops and clicks
Flashing OFF
AES/EBU input with confidence error, means eye pattern
too small to reliably extract data AES/EBU output with intermittent audio
OFF ON AES/EBU input at other than standard data rates AES/EBU output reclocked at input sample rate