Psion Teklogix 7525M Manuel d'utilisateur Page 102

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Chapter 9: Example: Scanner Converter Board
Serial Scanner Board
92 Psion Teklogix WORKABOUT PRO HDK User Manual
The default configuration is for Symbol scan engines. The schematic is drawn this way.
This scanner converter board has three connectors:
Host scanner connector.
Scan engine connector.
Trigger switch connector.
Host Scanner Connector
JP2 is a 22-pin connector that accepts the 22-pin flex cable from the WORKABOUT PRO main
logic board. This connector has the following pins:
PR1 V+5 to JP1 pin 2 (Inter_RXD) x
PR2 V+5 to JP1 pin 1 x
GR1 Gnd to JP1 pin 12 (Symbol_TRIG) x
GR2 Gnd to JP1 pin 7 (Symbol_RTS) x
GR3 Gnd to JP1 pin 3 (Inter_Trigger) x
Table 9.2 Pinout Of Host Scanner Connector (JP2)
Pin
Name On
WORKABOUT PRO
Name On
Converter
Board
Description Direction
Active
State
State
During
Device
Sleep
Pull-up Or
Pull-down
1 V+5_BAR V+5 +5 V bar
code
supply
Power N/A Disabled N/A
2 V+5_BAR V+5 +5 V bar
code
supply
Power N/A Disabled N/A
3 IR_TXD TXD Data from
WORKA-
BOUT
PRO to
scanner
device
Output B None
Abbreviations:
N/A= not applicable;
A=- according to design requirements of driver and scanner device,
B = both high and low,
L= active low,
H= active high.
Table 9.1 Configuration Resistors (Continued)
Connects
When
Jumpered
Name
Provided For
Symbol
Scan Engines
Provided For
Intermec
Scan Engines
Note: x = zero-ohm resistor (jumper) present
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