47
Audio Distribution Amplifier - RB-DDA22 14
176.4 & 192 kHz. If the input is at a non-standard frequency then the unit
will indicate both the frequencies either side of the incoming frequency –
e.g. if the input signal has a frequency of 64kHz then both the 48kHz and
88.2kHz LEDs will be illuminated. If the frequency is below 32kHz or above
192kHz then the appropriate LED will flash.
Input Select Mode
Pressing the INPUT SELECT central button illuminates it red and allows you
to select the required input. Pressing the button will step the selected input
to the next input selection including auto mode.
In Input Select Mode the LEDs have the following states:
Off – Signal not selected and no valid signal present
Green – Signal not selected and valid signal present
Red – Signal selected and no valid signal present
Amber – Signal selected and valid signal present or Auto Mode Selected
Note: Input Select mode is chosen automatically when the selected input is
not present.
Auto Select Mode
In this special input select mode the unit will hunt through all the inputs
until it finds a valid signal. If multiple signals are present you can force
selection of the next input by holding the input select button down for 2
seconds, when the next valid input will be selected.
Digital Audio
Transmitter
Digital Audio
Transmitter
Digital Audio
Transmitter
Digital Audio
Transmitter
Digital Audio
Transmitter
Digital
Audio
Receiver
&
Input
Select
AES/EBU
XLR3
AES3id
BNC
AES/EBU
RJ45
S/PDIF RCA
Phono
TOSLink
Optical
AES/EBU
XLR3
AES3id BNC
AES/EBU
RJ45
S/PDIF RCA
Phono
TOSLink
Optical
Circuit Replicated 6 Times
Circuit Replicated 6 Times
Circuit Replicated 6 Times
Circuit Replicated Twice
Circuit Replicated Twice
System Block Diagram
Fig 14-3: RB-DDA22 System Block Diagram
