User`s manual

VPort D351 User’s Manual Introduction
Overview
The VPort D351 is a 1-channel video decoder for decoding MPEG4/MJPEG video streams from
VPort series video encoders (does not include the VPort 2110, VPort 2140, VPort 2310, VPort
2141, and VPort 3310) and VPort series IP cameras back to analog video signals. The analog
video signal can be sent to legacy CCTV devices, such as monitors, multiplexers, and matrix
switches, which can be used as originally intended as part of CCTV systems. In addition,
bi-directional audio enables ready-to-use voice over IP communication between the video encoder
and decoder.
The VPort D351 makes it easy to monitor cameras that are part of large CCTV systems, and the
VPort D351 can be configured to switch between different video sources either manually or
automatically within a given time interval. Up to 64 video sources can be included in the list. In
addition, the 2 DIs located on the top panel of the VPort D351 can be used to create 2 control
buttons for up and down video source selection.
Decodes the VPort’s MJPEG/MPEG4 video streams automatically
The VPort D351 can decode digital video streams that are generated from some VPort series video
encoders and IP cameras back to analog video signals for use with legacy CCTV equipment, such
as CCTV monitors, making the VPort D351 an important tool for protecting your investment in
CCTV equipment.
NOTE
The VPort D351 cannot decode video streams from the VPort 2110, VPort 2140, VPort 2141,
VPort 2310, and VPort 3310.
2-way audio support for a complete surveillance solution
The VPort D351 supports both audio input and audio output for voice over IP communication
between field sites and a central site. The 2-way audio function not only saves time, but also saves
the cost of needing to add additional communication devices, such as a telephone.
Up to 64 video source channels supported for manual or auto-scan selection
The VPort D351 supports up to 64 video source channels in one unit, providing users with the
convenience of conducting wide-scale video surveillance with just one monitor. Users can
manually select the video sources from the web browser or 2 DIs (DI1 is up and DI2 is down). An
auto-scan mode is also provided for changing the video source automatically in a given time
interval.
Automatically change to the video source once an alarm is triggered
The VPort D351 can be configured to change the active video source automatically to the source
of the alarm. This function allows users to check the cause of the alarm immediately without
losing any video. Once the danger passes, you can manually switch the video source and resume
normal operation.
Transparent PTZ control through the PTZ COM port
A “Transparent PTZ Control” is available to control cameras with a legacy PTZ control panel or
keyboard, which means that many brands and models of PTZ camera can be controlled without the
need to install PTZ drivers. Just connect your legacy PTZ control panel or keyboard to the PTZ
port of the VPort D351 to control the PTZ camera connected to the VPort video decoder directly.
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