Installation guide

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Initial Installation and Configuration
Before installing the VPort 251, verify that all items in the package checklist
are present. In addition, you will need a notebook or PC equipped with an
Ethernet port to complete the installation.
Step 1: Connect the power source, and connect loop-through power output
if required.
The VPort 251 can be powered by a 12 to 32 VDC power source, or an 18 to
30 VAC power source.
The power input jack accepts a concentric barrel-type
connector. The loop-through power output accepts a 2-pin terminal block
connector. Check the STAT LED on the top panel to verify that power is
connected correctly.
NOTE
The VPort 251's power output is looped through the power input
and will match the voltage of the power input source. For example,
if the power input is 12 VDC, the loop-through power output will
also be 12 VDC.
Step 2: Connect the VPort to the network.
The VPort 251 has an auto-sensing 10/100 Mbps Ethernet port, with built-in
LEDs to show 10 Mbps (amber) or 100 Mbps (green) connection activity.
Step 3: Connect the VPort to a camera and an audio source.
Use a coaxial cable to connect a video camera to the VPort's VIDEO INPUT
port, which uses a BNC connector.
A microphone or an amplifier can be plugged directly into the VPort's AUDIO
INPUT jack, and a speaker can be plugged into the AUDIO OUTPUT jack.
NOTE
Check the VIDEO LED on the top panel to verify that the video
connection is working properly.
Step 4: Connect the VPort 251 to a motorized PTZ camera/device.
If you are using a PTZ camera or device, you can connect the PTZ control
cable to the VPort to allow PTZ control over the network. A 5-pin terminal
block for RS-232/422/485 serial connections is provided for this purpose. The
pin assignments are shown below:
PIN RS-422/485 RS-232
1 GND
Ground
GND
Ground
2 R-
Rx-
---
N/A
3 R+
Rx+
RxD
RxD
4 T-\D-
Tx-/ Data-
---
N/A
5 T+\D+
Tx+/ Data+
TxD
TxD
To enable PTZ control, configure the PTZ control protocol in the VPort's
web-based manager.