AV Control Solution, Composite Video/Analog Audio Signal Switching and Displaying, 24 Hours Standby, Professional Matrix Switcher, AV Matrix Switcher, AV64 

AVCIT Series AV switcher is designed specifically for video and audio signal display switching high-performance intelligent matrix switching equipment, for any channel in the the brightest audio and video output channel, mainly used in radio and TV broadcasts, television teaching, command and control centers and other occasions.
This product is currently live with the power switch memory protection, LCD liquid crystal display, audio and video synchronization or separate switching and other functions, with RS232 communication communication interface, you can easily computer, remote control system or a variety of remote control devices used in conjunction.

(1)Support for 64-channel audio and video signal inputs, 2,4, 8 channel audio and video signal output, Input and output RCA port;
(2)Support fast switching operation;
(3)Support for the type of video signal: Composite video (signal).
(4)Type of audio signal: stereo, balanced or unbalanced connection;
(5)150MHz (-3dB), fully loaded high bandwidth;
(6) Power off memory with off-site protection, LCD liquid crystal display, audio and video sync or separate switching and other functions;
(7)The infrared remote control and RS232 communication function;
(8)2U rack-mountable metal chassis;
(9)Programmable Logic display circuit, switch any interaction;
(10)And long-distance signal transmission distortion compensation technology;
(11)Built-in universal power supply.

Bandwidth performance
Bandwidth:150MHz (-3dB) fully loaded
Brightness crosstalk:-50dB @ 5MHz
Differential phase error:0.1% ,3.58-4 .43 MHz
Differential Gain error:0.1,3.58-4.43 MHz
Maximum propagation delay:5 ns (+1 ns)
Switching speed:200 ns (maximum time)
VIDEO
Video input
Video Signal:64 way Video
Connection Type:RCA
Input/output level:0.5V~2.0Vp-p
IO Impedance:75Ω
Echo loss :-30dB @ 5MHz
Maximum DC Compensation :1.5V
Synchronization lock:0.3V-0.4Vp-p
Video output
Video Signal:2/4/8 way VIDEO 
Connection Type:RCA (Lotus)
Input/output level:1.0V~2.0Vp-p
IO Impedance :75Ω
Echo loss  : -30dB@5MHz   
Maximum DC Compensation  : +5mV-0 
Synchronization lock: Vertical interval
AUDIO
Gain unbalanced :0dB
Recording radiation response :20Hz-20KHz, +0.05 dB
Noise handling:0.03% @ 1KHz
S / N Ratio: > 90, the output 21 dBu balanced maximum output power rating
Brightness crosstalk: <-80 @ 1kHz, full load
Stereo channel isolation : > 75dB @: 20Hz-20KHz
Audio input
Signal type: 64-channel stereo, unbalanced
Connection Type: RCA interface (Lotus)
Impedance: 50 Ω
Maximum Level: +19.5 dBu
Audio output
Signal Type: 2/4/8 stereo, unbalanced
Connection Type: RCA interface (Lotus)
Impedance: 50 Ω
Gain Error: +0.1 dB
Maximum level (Hi-Z): +21 dBu
Maximum level (600Ω):+15 dBm
Power supply: 220V/50Hz
Power:20W
Installation:with a standard rack mount
Size :435L × 235W × 90H (mm)
Weight:4.2 (kg)
Mean time between failure:50,000 hours