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APD-240M026A

Vishay Dale

Document Number: 37050

Revision 05-Dec-00

INTERFACE SIGNAL DESCRIPTION

SERIAL DATA - The 200 bits of data that represent one row

of character data is serially entered on this input. The

information is entered at the 200th dot position (right side of

display) and is advanced one column with each Data Shift

pulse.

DATA SHIFT - A negative going edge on this input enters

the row data bit present at the Serial Data input. This input

requires 200 pulses to enter the 200 bits of row data.

SCAN CLOCK - Much like horizontal sync on a CRT, this

signal is used to advanced the the row pointer vertically

down the display, one row at at time. This input must be

continually pulsed whenever the display is on to prevent

damage to the panel.

SCAN SYNC - This pulse is applied after each complete

scan to begin a new scan at the top row of the panel, similar

to vertical sync on a CRT.

SYSTEM BLOCK DIAGRAM

CLOCK

PROGRAM

STORAGE

ROM

REFRESH

RAM

DOT AND

CHARACTER

CLOCK

CHARACTER

GENERATOR

SHIFT

REG-

ISTERS

CATH-

ODE

DRIVERS

240 CHARACTER

PLASMA PANEL

ANODE

DRIVERS

+ 12 VDC

8 BIT DATA BUS

SYSTEM SELECT

READY

DATA TAKEN

DATA STROBE

ERROR

RECEIVE DATA

TRANSMIT DATA

CLEAR TO SEND

DATA TERMINAL

READY

READY

TO SEND

VIDEO

CON-

TROLLER

DC-DC

CON-

VERTER

SCAN CLOCK

SCAN SYNC

PANEL SCAN

MONITOR

SERIAL DATA

DATA SHIFT

MAIN

CON-

TROLLER

APD-240M026A

OPTIONAL CONTROL BOARD

APD-240M026A-1

SCAN

MONITOR

CIRCUIT

INITALIZE

CURSOR

DISABLE

ORDERING INFORMATION

DESCRIPTION

PART NO.

Display and Drive Electronics ......................................................................................................................................... APD-240M026A

Display and Drive Electronics plus Controller Board (includes DC-DC high voltage converter) ................................. APD-240M026A-1

DC-DC High Voltage Converter ................................................................................................................................................. PDS-400

Data Connector Kit ................................................................................................................................................................... 280253-01

Power Connector Kit ................................................................................................................................................................. 280108-01

Non-Glare Filter (amber circularly polarized) - other filters available - contact factory ............................................................. 280109-03

CONNECTOR

PIN

SIGNAL

J3

1

DATA SHIFT

2

GROUND

3

N/C

4

+ 12 VDC

5

SCAN SYNC

6

SCAN CLOCK

7

+ 5 VDC

8

SCAN MONITOR

9

GROUND

10

SERIAL DATA

J5

A

- 115 VDC

B

GROUND

C

+ 65 VDC

PIN DESCRIPTION