DDA-4010
IRT Electronics Pty Ltd | www.irtelectronics.com
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Revision 01
GENERAL DESCRIPTION
The DDA-4010 serial digital data distribution amplifier provides the user with a single module to cover a wide range
of distribution and monitoring functions for 3G/HD/ SD-SDI or ASI signals.
Two quad output reclocking / non-reclocking distribution amplifiers are provided on the one card. On board switch
settings allow either of the inputs to feed all outputs to create a one in, eight out distribution amplifier.
Where non-reclocking is required, on-board switch settings select between reclocking and non-reclocking modes.
The DDA-4010 will automatically reclock to match the input at either 3G-SDI, HD-SDI, SD-SDI or ASI rates, or can be
fixed to operate at any one of these rates. Both sides of the DDA-4010 can be run independently allowing a mixture
of signal types to be used.
The DDA-4010 is also configurable for Automatic Changeover from one input to the other on loss of input signal
allowing for an input Main/Standby scenario.
Due to the nature of ASI signals being phase sensitive, signal inversion is also possible for situations where an
inverted ASI signal needs to be corrected.
Front panel LEDs indicate when input signals are present and whether the outputs are locked to the inputs.
An optional relay bypass rear assembly is available to switch the Inputs to one of their respective Outputs in the
event of a power failure.
Simple Network Management Protocol (SNMP) is available for remote setup and monitoring of input status and
alarm states when used in an IRT frame fitted with SNMP capability.
The DDA-4010 is designed to fit IRT’s 4000 series 3RU frame for use with IRT’s SNMP system as well as being
suitable with IRT’s 1000 series 1RU Eurocard frames and may be used alongside any other of IRT’s Eurocards.
Standard features:
•
Switch selectable for 1 in, 8 out single distribution amplifier operation.
•
In-phase reclocked / non-reclocked outputs on each amplifier.
•
Selectable for either 3G/HD/SD-SDI or ASI applications.
•
Automatic output muting on no input.
•
Front panel monitoring outputs.
•
Front panel indicators provide monitoring of presence of inputs and lock status.
•
Automatic changeover to second input on loss of primary input (selectable).
•
Optional relay bypass on loss of power.
•
SNMP monitoring and control.
BLOCK DIAGRAM DDA-4010 SIGNAL PATH
S
IN
G
LE
/
D
U
A
L
M
O
D
E
D
A
T
A
R
A
T
E
R
E
C
LO
C
K
/
N
O
N
-R
E
C
LO
C
K
I/
P
I
N
V
E
R
T
(
x2
)
A
U
T
O
C
H
A
N
G
E
O
V
E
R
OUT 2A
OUT 3A
OUT 4A
OUT 4B
OUT 3B
OUT 2B
OUT 1B
IN B
EQUALISER
EQUALISER
SNMP
Optional Relay Bypass on loss of power
In Dual 1 In, 4 Out mode:
IN 1 & IN 2 independently either 3G/HD/SD-SDI or ASI
OUT 1A
IN A
MON B
MON A
ALARM A
ALARM B
RECLOCKER
