MGP WRM2 Especificações descarregar pdf (Página 22)

TelePole WR/ Operating & Maintenance Manual Page 22

7. Electronic Block Diagrams Description

See block & wiring diagram DRW# 12850-50-00.

7.1. Meter

The meter unit includes the CPU and the Power Supply boards.

7.1.1. CPU Board Description

DRW #12850-40-00, PC #1942.

CPU Board Block Diagram

On /Off Circuit (Q3, Q4, Q5)

A momentary short between pin J3/1 and J3/2 switches Q3 and Q4 on.

The battery voltage powers the power supply circuit.

U5/5 is set to “1” (in software), Q3 is switched on, and as a result the meter is turned on.

An additional momentary short between J3/1 and J3/2 sets U5/6 to “0” through Q5. U5/5

is set to “0” and the meter is turned off.

Display

Driver

On / Off

Speaker

CPU

80C32

Communication

EPROM

EEPROM

Touch

Panel

UART &

Communication

Electro-

Luminescence

Extension Card

Decoder

Latch

output

Latch

input

1/2

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MGP WRM2 Especificações Página 22