Hirschmann VIP multimedia LAN adapter, User Manual

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Advanced Features 49
C
HAPTER
6
Advanced Features
Apart from the superb video quality and the ease-of-use
VIP
does also
sport some advanced features described in the following.
Automatic Connection Feature
The advantage of conventional dedicated cabling lies in performance
guarantee and availability. The auto-connect feature has been designed
especially in order to provide the same level of guaranteed connectivity
we come to expect from analog coaxial video cables.
It is not uncommon for IT-networks to experience short breakdowns or con-
gestions. The protocols employed for computer communication, for exam-
ple TCP/IP, have been designed to cope with missing data and
interruptions. For
VIP
, once a video connection has been established, the
video stream would normally terminate gracefully when a network con-
nector is pulled or the network is otherwise disrupted.
In order to guarantee connectivity,
VIP
may be configured to automati-
cally reconnect. In order to activate this feature, just click the Auto-Con-
nect radio button to On and confirm this choice by clicking the Set button.
From this point on, the unit will try to connect to the specified alarm IP
address every time. The receiving station (alarm IP address) can either be
another
VIP - VRx
unit or a PC running
VIP -SW1
.
Video Motion Detection Feature
The
VIP - VTx
transmitter has the ability to autonomously check the video
input for significant motion in the scene and to trigger an alarm in case the
detected motion exceeds a preset threshold. Motion detection is switched
on by setting Motion Alarm to On in the Alarm Configuration Menu.
The sensitivity of the motion detector can be selected in the same menu.
This parameter needs to be adapted to the requirements of the particular
application. The best setting should be determined experimentally. Note
that higher sensitivity will result in a lower robustness against noise and spuri-
ous motion in the scene. This may lead to unwanted erroneous detections
and consequently increase the rate of false alarms.
Motion detection can be restricted to certain areas in the scene. Up to 242
square regions can be individually selected in order to mask specific parts
of the scene. For more detail on that feature refer to the
VIP -SW1
manual.
When using a Web Browser no specific regions can be selected, only the
motion alarm can be turned on or off and the sensitivity can be set to dif-
ferent values.