ABL77 Service Manual
Chapter 2: Analyzer Description
Module Descriptions,
Continued
Barcode /
keyboard
connector
The barcode scanner port is a 5 pin DIN connector that sends the signals to the
interface board. This port is also used for connecting a keyboard to the analyzer for
testing purposes.
COM1 port
The COM1 port is a serial connection to the CPU board. It allows interaction with
external computers. The RS232 port contains 9 pins. The following table lists the
pin designations and transmission format.
Pin I/O
Description
1.
◄
DCD (Data Carrier Detect)
2.
◄
RX (Receive Data)
3.
►
TX (Transmit Data)
4.
►
DTR (Data Terminal Ready)
5.
GND (Signal Ground)
6.
◄
DSR (Data Set Ready)
7.
►
RTS (Request To Send)
8.
◄
CTS (Clear To Send)
9.
◄
RI (Ring Indicator)
— Connector
Ethernet port
The Ethernet port is a connection to the CPU. It allows bi-directional
communication with external computer systems.
Power switch
The power switch is a 2-position switch that places the analyzer in either an On or
Standby mode. There is no Off mode as the analyzer is always charging when it is
connected to an AC power source.
Charger port
The charger port is a 6 pin DIN connector. It allows the ABL77 charger to supply
AC power to the battery control board.
Continued on next page
Rev. F
2-43