Specifications

Video Surveillance Systems
ALARM · ACCESSORIES · CCTV WIRELESS SYSTEMS · MONITORS · VIDEO SPLITTERS · CAMERAS · RECORDERS
S17
GVENPOS-300
Order No. 18.1090
POS linking module, for fading-in and collecting data of all transactions via net-
work (LAN) and Internet connection. Compatible with all PC video surveillance
systems of the GV-... series.
• Operates as an interface between cash register and GV system
• Data transmission via TCP/IP interface
• Support of up to 16 POS systems
• Supports all the standard cash register protocols
• Power supply via supplied 5V PSU
• Dimensions: 161x34x123mm
• Min. system requirements: Geovision software V8.0.4.0 or higher
GV-NET/IO
Order No. 19.0040
Alarm input/output module with RS-232/RS-485 converter, allows to connect
external units to the PC video surveillance systems of the GV-... series. Various detec-
tors like e.g. motion detectors, reed contacts, etc. and output devices like sirens, electr.
door locks, etc. can be combined with each other via 4 inputs and 4 outputs. The
GV-NET/IO card is directly inserted into a free slot of the PC. Furthermore, it is
possible to control connected dome cameras directly from the PC via the RS-485
interface of the GV-NET/IO card.
Supplied with matching connection cables. The peripheral devices are connected via
screw plug terminals.
Situations with a great amount of backlight are one of the biggest challenges of video sur-
veillance. This may be a camera inside a shop, for example, which is directed towards a glass
entrance door. Now, if a person enters the shop, a standard camera will try to display the
brighter background, because this provides the largest visual contents. In this case, the per-
son in front of it appears too dark. A similar situation occurs when a motor vehicle drives
towards the cameras with the headlights switched on. The headlights ensure that the camera
is unable to recognise the number plate or any signs on the motor vehicle. Similar effects may
also be caused by reflections on wet surfaces.
The backlight compensation which is integrated into many cameras is only capable of com-
pensating slight deviations.
The camera systems with built-in wide dynamic range (WDR) function are a considerable
improvement. In simple terms, this means that the picture is divided internally into very small
surfaces, partly down to pixel level. The brightness of each of these surfaces is now matched
automatically and independently of the adjoining surfaces. Thus, it is now possible in the
above-mentioned example to clearly recognise both the person in the room and the back-
ground.
Application range of WDR cameras
Entrance doors in shop areas
Strong punctual glare, e.g. by lanterns
Driveways
Gateway surveillance in warehouses
Standard camera
WDR camera
Wide Dynamic Range (WDR) Cameras
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