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Mechanical Description
Mechanical Description
LCD and Backlight
Serial I/O Communications Port
Parallel I/O Communications Port
8
As indicated in Figure 1, except for the battery, speaker, interface board, and rear
connector board, all functioning components of the monitor are installed as sub-
assemblies of the case front-cover assembly. There are four sockets (event marker,
Toco and two US) accessible on the left side panel. These are mounted on a side
connector PCB, which is itself mounted on the main PCB.
The case rear-cover assembly includes the replaceable battery and the speaker
assembly. The rear cover provides openings through which the three rear
connector board-mounted connectors (serial, parallel and power input) are
accessible. Additional mechanical features are included in
Chapter 6, "Disassembly/Reassembly Guide".
The LCD panel is a monochrome LCD display. It is a single-panel display with
a resolution of 320 X 240 pixels. Data to be displayed are stored in the main
board. Direct connection to the LCD panel is made through on-board header
assembly J7.
The backlight of the LCD is a Cold Cathode Fluorescent Lamp (CCFL)
mounted as part of the LCD panel. The AC high-voltage is turned on and off by
a digital control bit from the main-board-mounted drive.
The RS-232 interface is totally isolated from the interface board through the use
of high-speed optical isolators and isolated 5-volt power supply.
See Chapter 2, "System Interfaces" for serial connections, pinouts, cables and
supported modems.
The parallel communications port is used to connect the monitor to the
Recorder or to a standard PCL Level 3 printer. At the time of printing, not all
PCL Level 3 printers are supported. For printers that have been validated for use
Chapter 1 - General Information
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