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724-746-5500 | blackbox.com
Appendix: Connector Pinouts
A.4 DC Power Connector
You should use the power supply that’s included with the transmitter. However, if there is a reason a substitute power supply
must be used, then the following information is important for maintaining product reliability and performance:
Power supply output rating: Reg5-VDC @ 3-Amps.
Power-input rating for CAT5 Multi VGA and Analog Audio Transmitter: 5-VDC, 1-Amps max.
The transmitter’s DC power input connector accepts an industry-standard coaxial-DC plug with the following specifications:
• Coaxial power connector
• Outside diameter (OD) = 5.5 mm
• Inside diameter (ID) = 2.5 mm (accepted center-pin diameter)
• Length = 11 mm (overall length of insertable plug end)
• Inner contact (pin-socket) = +5VDC
• Outer contact (sleeve) = Ground
We recommend that the inner contact (center-pin contact) of any mating DC plug use a “tuning-fork” shaped design, rather than
a plain barrel shape. The tuning-fork design greatly increases the reliability of the power connection. The plain barrel style connec-
tor can cause intermittent operation, often resulting in “mysterious” system problems that are difficult to identify.
The provided power supply already comes with the correct output ratings and DC-plug configuration.
Figure A-5. Plain barrel center contact.
Figure A-6. Tuning-fork center contact (PREFERRED).
The power supply included with your transmitter already has the correct output ratings and DC-plug configuration.