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RJ45 (8-pin) to RJ45 (8-pin) Straight-Through Cable Wiring
Straight-Through Cable
RJ45 Plug Pin 1
Switch Port
RJ45
Connector RJ45
Connector
Tx+
Tx-
Rx+
Rx-
VPort Ethernet
Port
Cable Wiring
3 3
6 6
1 1
2 2
Rx+
Rx-
Tx+
Tx-
RJ45 (8-pin) to RJ45 (8-pin) Cross-Over Cable Wiring
Cross-Over Cable
RJ45 Plug Pin 1
NIC Port
RJ45
Connector RJ45
Connector
Tx+
Tx-
Rx+
Rx-
(Rx+)
(Rx-)
(Tx+)
(Tx-)
(Tx+)
(Tx-)
(Rx+)
(Rx-)
VPort Ethernet
Port
Cable Wiring
3 1
6 2
1 3
2 6
Rx+
Rx-
Tx+
Tx-
100BaseFX Ethernet Port Connection
The concept behind the SC port and cable is easy to understand. Since optical
signals do not require a circuit to transmit data, one cable is used to transmit
data and one cable is used to receive data, providing full-duplex transmission.
Remember to connect the Tx (transmit) port of device I to the Rx (receive) port
of device II, and the Rx (receive) port of device I to the Tx (transmit) port of
device II. If you make your own cable, we suggest labeling the two sides of the
same line with the same letter (A-to-A and B-to-B, as shown below, or
A1-to-A2 and B1-to-B2).
SC-Port Pinouts SC-Port to SC-Port Cable Wiring
Tx
Rx
AA
BB
A A
B B
A PTZ port is located on the VPort 351’s front panel. The port is used to
connect to a PTZ motorized camera or device, so that the camera or device can
be controlled from the VPort over the IP network. The PTZ port supports
RS-232 or RS-422/485 signals through the terminal block. The PTZ port pin
assignments are shown in the following table.
Pin Assignment
1
3
2
4
5
PIN RS-422/485 RS-232
1 GND GND
2 R- ---
3R+ RxD
4 T-\D- ---
5 T+\D+ TxD
Manual
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