Albalá Ingenieros PDS3000C01, Manual

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Albalá Ingenieros | Manual PDS3000C01
3.7.1. Electrical SDI video connections
All electrical SDI video connections are BNC type. The following suggestions should be
kept in mind when wiring the electrical signals.
BNC connectors used on cables must be suitable for the high frequencies of digital
video signals: it is strongly recommended to use high quality connectors from well
known manufacturers.
All coaxial cable used must be Belden 8281 or similar. This type provides the greatest
lengths because it is used to calculate the equalizers in the PDS3000C01. Cables
carrying signal between the module and the devices should use single piece
construction, avoiding spliced sections with double BNC female or barrel connectors.
If it is necessary to split the cable into two sections the same type of wire should be
used in both sections.
The use of analog video coaxial cables RG-59 type or similar is not recommended for
digital video except for very short distances.
3.7.2. Analog video connections
The analog video inputs use two BNC connectors configured in loop-through.
For analog video connections a coaxial cable with 75Ω of characteristic impedance
must be used.
If the loop-through functionality of this output is not used then it should be
terminated with 75Ω.
3.7.3. GPIO connections
The GPIO inputs use 3.81mm pitch terminal block connections and have the
following equivalent circuit:
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