Character overlay device
specification
1、Overview ：
Character overlay "special character overlay chip, character overlay text information superimposed anywhere on the monitor screen; each line can display 24 characters or letters, one screen can display 6 lines per screen can stack up to 144characters; text messages of the equipment by the serial port or network input, so more easy site construction.
2、Exterior ：
3、Technical Specifications ：
Video input approach: One Road
Video outputs: 1 Road
Video Channel bandwidth: 8MHz (-3dB)
Video channel signal-to-noise ratio: 75dB
Video Differential gain: <1%
Video Differential Phase: <2o
Video input: PAL, 75Ω, BNC, 1Vp-p
Video output: PAL, 75Ω, BNC, 1Vp-p
Shows the number of Chinese characters: 144
Chinese character: GB2312
Chinese character fonts: Times New Roman Bold 24x32
Communication Interface: RS-232, 19200bps, 8, n, 1 10/100M adaptive Ethernet
Power input: AC 220V/50Hz
Power consumption: <3W
Operating temperature: 0 ℃ - +45 ℃
Environment Humidity: <95% RH
MTBF:> 20000 hours
Case Size:
Total Net Weight: 1kg
4、Indicator :
Indicator: shiny front panel: power lights, powered
RJ45: network lights, network connectivity Always
RJ45: data shiny lights, send and receive data
5、Interface ：
Network (RJ45): to support TIA/EIA568A and TIA/EIA568B, Select 568B cable connection.
TIA/EIA-568A：1、White and green
2、green
3、White Orange
4、Blue
5、White, blue
6、Orange
7、White brown
8、Brown
TIA/EIA-568B：1、White Orange
2、Orange
3、White and green
4、Blue
5、White, blue
6、green
7、White brown
8、Brown
Serial port (DB9): three-wire,2-TX (output), 3-RX (input),5-GND (ground)
6、Block Diagram ：
