Operation
The PDM 1284 D functions as a 4 channel embedder and de-embedder.
Simultaneous embedding and de-embedding is also possible. For
example, its possible to de-embed and output audio from a selected
audio group before overwriting it with new audio.
Rotary switches are provided for AES 1+2 and AES 3+4 audio group
selection, and a 1KHz tone can also be selected (all channels)
(Note. An audio “group”is 2 x AES)
Connections
All connections are clearly indicated on the
module. AES audio I/O connections can be
made two ways, by directly wiring
connections to a suitable male 25pin SubD
connector, or by using the supplied 25pin
SubD PCB adapter with screw terminals. 25 Pin SubD Adapter PCB with
screw terminals
Settings
A dip switch is provided for
module conguration.
Settings are indicated on the
module and self explanatory.
The “Auto Black”function will switch in a black test signal if the input
video is lost, allowing for an uninterrupted audio connection. This
mode also allows the module to be used to transport audio signals
alone if required. Sample rate converters can be turned o to support
encoded AES streams such as DolbyE
Optional Fiber
Optional Fiber I/O can be added at anytime by plugging in the Fiber SFP
sub module. This will provide 3Gbit SDI ber I/O capability (ber input
is selected via the dip switch)
Power
The module requires a 12V DC power input and a LED is provided to
conrm power is connected.
Power Lead Strain Relief
The module has a small hole in the case located above the power
connection. To prevent the power lead being accidentally pulled out,
use the supplied tie-wrap and secure the lead as shown below.
Optional Mounting Bracket
The optional RFR 1001 mounting bracket can be used to permanently
mount the module on any at surface or on 19” rack rails.
Note:
Another module type is shown for
illustration purposes only. The principle is
the same for the PDM 1284 D
Cascading Modules
If more than 2 x AES channels are required then its possible to cascade
multiple modules. Take the SDI out from one module and connect to
the input of another module and select a dierent audio group. Up to 4
modules can be cascaded to embed the full 8 x AES audio payload into
a single SDI stream
