Transducer Hardware Overview; Functional Description Of The Rf/Cpu Hardware - Philips Avalon CTS M2720A Service Manual

Transducer Hardware Overview

Transducer Hardware Overview
The system has three transducer types:
• Toco
• US
• ECG
They all share the same modulation and digital processor circuitry, power supply, liquid crystal display, and
RF transmitter. The processor software is also the same for all transducers. The frontends, however, are
specific to each transducer type.

Functional Description of the RF/CPU Hardware

The RF/CPU section of the transducers is made up of the following functional blocks:
• CPU (micro controller)
• LCD
• Base Station communication
• EEPROM
• FLASH download port
• Clock generator
• Power supply and battery charger
• Modulator
• RF transmitter
To Purchase, Visit Avobus.com
Boards: M2725-66501,
M2726-66501,
M2727-66501
parameter
frontends
wave
(see separate description)
frontend control
power management
power supply
and battery base station
charger communication
Figure 2 Transducer Block Diagram
or call 1-800-674-3655
modulation signal
RF
(wave +FSK)
Modulator
transmitter
FSK signal
gain control
frequency control
FLASH
download
port
CPU
(micro
controller)
Clock
EEPROM
generator
2 Theory of Operation
LCD
19