User`s manual

VPort 251 User’s Manual Introduction
Product Description
BNC video input
The BNC video input is a 75 Ohm video port for connecting an external camera. To ensure that the
correct video modulation type is detected, cameras should be connected and powered on before the
VPort is powered on.
NOTE
Please use the standard CCTV cable (RG59U or above) to connect the video camera and VPort’s
BNC connector.
Mini stereo jacks for audio input/output
The VPort 251 has 2 mini stereo jacks for audio input and output on the front panel. One jack is
for a MIC-in/Line-in audio input connection, which can be directly connected with a microphone
or an audio source from an amplifier. The other jack is a Line-out audio output connection, which
can be used to connect earphones or an amplifier.
LED indicators
The front panel of the VPort 251 contains several LED indicators. The function of each LED is
described in the table below.
LED Color State Description
ON Hardware initialization
RED
FLASHING Software initialization
ON System boot-up
STAT
GREEN
FLASHING Firmware upgrade proceeding
On Video signal is detected
VIDEO
GREEN
Off Video signal is not detected
On RS-232 or RS-485 signals are being transmitted
PTZ
GREEN
Off
RS-232 or RS-485 signals are not being transmitted or
have not been detected
10/100 Mbps Ethernet port
VPort 251 is equipped with one RJ45 10/100Mbps Ethernet port (LEDs on the left corners of the
port indicate 10M or 100M). This Ethernet port is auto- negotiation with 10Mbps or 100Mbps, and
also auto-detecting MDI or MDI-X ports.
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