CHAPTER 4: Installation and Operation
4. Installation and Operation
To connect a G.703 Adapter or Balun Mate II to your
G.703 devices and/or networks, take these steps:
1.If you are using an MT255A-M Adapter, connect its coaxial pigtails to your device’s coaxial G.703 ports. If you are using an MT256A-F Adapter or Balun Mate II, connect your coaxial G.703 cables to its coaxial ports. Make sure to connect TX to TX and RX to RX. If the cables or device ports you want to attach have regular BNC connectors rather than 1.6/5.6-mm connectors, you’ll need to use BNC-to-1.5/6.5-mm adapters or adapter cables (call Black Box Technical Support).
2.Connect your G.703 twisted-pair cabling to the Adapter’s or Balun Mate II’s RJ-45 jack(s). The plug of each cable you’ll attach to these jacks should be pinned to match them:
Pin 1: Transmit Data + (TX+)
Pin 2: Transmit Data – (TX–)
Pin 3: Transmit Data (TX) shield
Pin 4: Receive Data + (RX+)
Pin 5: Receive Data – (RX–)
Pin 6: Receive Data (RX) shield
Pins 7 and 8: No connection
