Front Panel/Display Interface; Lvds Transmitter Board; Front Panel Interface Pca - Teledyne T100 Instruction Manual

Teledyne ML - T100 UV Fluorescence SO2 Analyzer

9.6. FRONT PANEL/DISPLAY INTERFACE

CPU
LAN COM4 USB4
Ethernet
Ethernet Port
USB
USB Slave
Type B Port
Analog Input
Terminal Block
Aux I/O PCA
Figure 9-23:

9.6.1. LVDS TRANSMITTER BOARD

9.6.2. FRONT PANEL INTERFACE PCA


power supply circuitry for the LCD display module

a USB hub that is used for communications with the touchscreen controller and the two front
panel USB device ports

the circuitry for powering the display backlight
Users can input data and receive information directly through the front panel touch-
screen display. The LCD display is controlled directly by the CPU board. The
touchscreen is interfaced to the CPU by means of a touchscreen controller that connects
to the CPU via the internal USB bus and emulates a computer mouse.
LVDS
Transmitter
Board
USB Master
Front Panel and Display Interface Block Diagram
The LVDS (low voltage differential signaling) transmitter board converts the parallel
display bus to a serialized, low voltage, differential signal bus in order to transmit the
video signal to the LCD interface PCA.
The front panel interface PCA controls the various functions of the display and
touchscreen. For driving the display it provides connection between the CPU video
controller and the LCD display module. This PCA also contains:
06807A(DCNxxxx)
TFT BIAS
Supply
10.4, -7.0, 16, 4V
3.3V
LVDS
18 Bit TTL Data
Receiver
Remote
Local
Lang.
Front Panel Interface PCA
Theory Of Operation
LCD Display
and
Touchscreen
Back-Light
+5V
Supply
PWM
Touch Screen Controller
USB & 5V
Utility
BL Cont.
Controller
USB2 HUB
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USB-1 USB-2
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