KLS12 manual
www.kystar.com.cn
21
X
、
FAQ
Q1：DVI, HDMI port definition.
A：
DVI
：
Digital (HD) video signal is an interface standard introduced by DDWG (Digital Display
Working Group) in 1999 by Silicon Image, Intel and other companies. It has been well
optimized in speed, clarity and HDCP protocol. Signal sources are typically desktop
computers, notebooks, etc.
HDMI
：
High Definition Multimedia Interface (HDMI) is a digital video/audio interface
technology. It is a special digital interface suitable for image transmission. It can transmit
audio and video signals at the same time. The maximum data transmission speed is 5 Gbps.
Signal sources are usually cameras, notebooks, information dissemination systems, etc.
Q2：Briefly describes the connection mode of video card, video processor, receiving
card and large LED screen.
A:
The DVI (VGA) output port of the graphics card is connected to the DVI-IN (VGA-IN) input
of the video processor - the network port output of the video processor is connected to the terminal
receiving card behind the screen through a network cable - the receiving card connection control
The respective part of the screen body is connected to the entire large screen by cascading.
Q3：How to set the keyboard lock of the video processor? How to unlock?
A:
A: Menu - Advanced Menu - Expert Settings - Keyboard Lock. Keyboard can be locked after
opening. Keyboard can be unlocked even by pressing MENU key 10 times.
Q4：What are the possible reasons why the upper computer can't detect the equipment?
A:
Use a computer to control the video processor, serial line.
The connection failure may be caused by the following conditions.
①
The device is not powered on;
②
The USB cable driver is not installed on the computer or the USB driver is damaged;
