4
Redbox RB-DSD8 User Handbook
FRONT PANEL CONTROLS
& INDICATORS
2
FR
ONT P
ANEL C
ONTR
OLS & INDIC
A
TORS
DISPLAY LEDS
Fig 2-2: RB-DSD8 Controls & Indicators For Each Channel
Presence LEDs 1(L) 2(R)
Each stereo input channel has an associated Presence LED which indicates the level of that
channel. Each LED has three states:
Green
– This indicates that the level on that channel is above threshold
Yellow
– This indicates that the level on that channel is below threshold
Red
– This indicates that the channel is silent i.e. no audio at all
AES LEDs
Each channel pair has an AES LED associated. This LED indicates the status of the digital
audio. Each LED has four states:
Green
– AES detected and everything is fine. The input sample rate matches the
output sample rate.
Yellow
– AES detected and everything is fine. The input sample rate is different to
the output sample rate.
Red
– AES detected but an error has been detected.
Off
– No digital signal is present or the analogue input is being used.
The following errors can create a red state:
CRC error
Parity error
Validity bit error
Biphase encoding error.
SEL LEDs
Each channel pair has a SELection LED associated with each stereo MAIN and BACKUP
input. This LED indicates which input is currently being used for the output. The MAIN
selection LED illuminates green when the associated output is from the MAIN input. The
BACKUP selection LED illuminates red when the associated output is from the BACKUP
input. Only one of these two LEDs can be on for any one channel at any given time.
