A3 ALPHA Meter Technical Manual
Option Boards
Some of the option boards available for the A3 ALPHA meter are
indicated below:
2003.February.28
output relay option board
I
communications
I
internal modem option board
I
external serial communications option board
I
RS232 option board
I
RS485 option board
I
20mA current loop option board
I
1 MB extended memory board
I
TM42–2190B
1. Introduction
1-7