10/100/1000 monitoring ports use Cat 5/Cat 5e cables. The Sensor's normal mode of operation, using pins 1&2 and 3&6, is to fail-open, which means the data will continue to pass through the Sensor allowing continued data flow. In this mode, pins 4&5 are terminated to ground via 75 ohm and a capacitor.
| Pin # | Signal | Direction on Sensor |
|---|---|---|
| 1 | TxD+ FO | (See text above) |
| 2 | TxD- FO | |
| 3 | RxD+ | Input |
| 4 | TxD+ FC | Reserved for use in the fail-closed dongle. |
| 5 | TxD- FC | |
| 6 | RxD- | Input |
| 7 | These pins are terminated to ground through a 75 ohm resistor & capacitor. | |
| 8 | ||