Model 9110T NOx Analyzer

Principles of Operation

13.8.1. LVDS TRANSMITTER BOARD

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.

13.8.2. FRONT PANEL TOUCHSCREEN/DISPLAY 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:

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

13.9.SOFTWARE OPERATION

The 9110T NOx Analyzer has a high performance, VortexX86-based microcomputer running WINDOWS CE. Inside the WINDOWS CE shell, special software developed by Teledyne interprets user commands via the various interfaces, performs procedures and tasks, stores data in the CPU’s various memory devices and calculates the concentration of the sample gas.

Figure 13-31: Basic Software Operation

Teledyne Analytical Instruments

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Teledyne 9110T instruction manual Software Operation, Lvds Transmitter Board, Front Panel TOUCHSCREEN/DISPLAY Interface PCA