SNT Data Link Viewer and Sender

larger image

Product is obsolete.

SNT Data Link Viewer and Sender

Obsolete - No longer available

One of a family of fine products, the DATA LINK can send high quality CCTV signals with a protocol independent RS485 half duplex data stream and configurable alarm data channel (not just contact closure and can cope with multiple inputs) all on ONE coaxial cable. 12 volt DC power for cameras and accessories is also provided down the SAME coaxial cable.

SNT’s Data Link System allows one coaxial cable to be used for the simultaneous conveyance of a high quality video channel, RS485 data channel, alarm signal data channel, status monitor channel and DC power in real time.

Data Link assures excellent signal quality, irrespective of distance, thanks to the unique fully automatic equalization and correction system. Operating distances may be up to 600 metres whilst providing 12V DC power to the camera. The half duplex RS485 channel may be utilised for remote camera set-up/adjustment, access control etc.

Comprising of two main parts; the remote unit (sender) is connected to the camera and local unit (viewer) is connected to the control operating system.

Data Link provides the innovation, simple installation and excellent picture quality that you expect from SNT products. Data Link has complete power and misconnection protection circuitry and eliminates and protects from hum interference and ground loop problems.

Technical Specification

Electrical
Viewer Input Voltage	40 volts DC from \| AC Adaptor \| 100-240 volts AC \| 47 - 62 Hz
Sender Output	12 volts DC @ 1 amp
Video Signal
Channels and Standards	1 \| EIA, CCIR, NTSC, PAL
Response and Noise	5 Hz - 6 MHz \| s/n > 54dB
Input/Output Level	1V p-p
Input/Output Impedance	75 Ω unbalanced
Overall Gain	Unity
Data Signal
Standarts Supported	RS485, Half Duplex, 2-wire \| Data Rate up to 38,400bps
Alarm Signal
Number of Channels	1
Alarm Input Type	Normally Open, Normally Closed or, \| Selection via Independent external switches Impedance Bridge (1k Ω term) on Sender unit
Alarm Output Type	Normally Open, Normally Closed \| User selectable via dry relay
Link Status Signal
Parameters Monitored	Power, System, Link fail. \| Automatic continuous monitoring
Alarm Output Type	Normally Open, Normally Closed \| User selectable via dry relay
Connectors
Video/ DC Link	BNC
Alarm out\| Status \| Data In/Out	3 Pin removable Phoenix connector 2.55mm pitch
Alarm In/DC Out	4 Pin removable Phoenix connector 2.55mm pitch
Indicators/LEDs
LEDs	Standby - Red Operating - Green Link initializing - Yellow Link fail - flashing Yellow		Operate - Red Power Camera - Green Power Low* - Yellow Power Fail* - Flashing Yellow/Green
	Alarm - Red
	*Yellow for 5 secs whilst establishing connection with Sender.	Power Low - CAUTION output <12 volts Power Fail - WARNING Excessive load on output Remove immediatly
Environmental
Operating Temperature Range -5 C to +55 C Operating Humidity Range 20 – 90% relative non - considering
Mechanical
100L x 75W x 26H \| Weight 200 gm		100L X 75W X 26H \| Weight 210 gm
PSU 143L x 72W x 42H \| Weight 430 gm