Datalogic STARGATE RF910MHz Quick start guide

Datalogic_Block_Diagram Revision: 1.00 6/19/2003

Signature: F.Giovanetti page 1of 6

DATALOGIC PROPRIETARY INFORMATIONS

Block Diagram STARGATE RF910MHz

BASE STATION

Author: Datalogic

Datalogic_Block_Diagram Revision: 1.00 6/19/2003 page 2of 6

DATALOGIC PROPRIETARY INFORMATIONS

STARGATE RF910MHz: FUNCTIONAL DESCRIPTION AND BLOCK DIAGRAMS

Functional blocks description with reference to page 3/4/5 block diagrams:

Main Processor

It’s a 16 bits embeeded Microprocessor (Mitsubishi 37733) with internal Flash and Ram memories. Static Ram:

128 kB. Flash memory: 128kB

It runs at 12 Mhz. This processor moves data between other blocks and controls block funtionality.

Radio Transceiver

Receives and transmit data packets at 36864 baud Manchester encoded.

Tx Power out (50 Ohm) + 0 dBm typ.

Tx FM deviation = 45 KHz typ.

State Indicators

One led using red, orange and green colors.

Antenna

StarGate has an external antenna not removable.

UART

Two external UART (16550) which drives respectively the Radio Transceiver and the 232/485 input-output

interface. It’s frequency work is 3.6864 MHz.

PIC

Programmable OTP microcontroller which converts uart NRZ (start+data+stop) bits into radio output

Manchester RZ data bits. It works at 3.6864 MHz.

Power Supply (Step Down)

No batteries.

Supplies 9-30 Vdc. It sources 70 mA.

An interface reset button is included.

Multiinterface

Transmit and received the data via RS232 and RS485 interface.

Clock sources description

12.00 MHz Quartz Crystal Main Microprocessor Clock (onto GEL-4734)

3.6864 MHz Ceramic Resonator Microcontroller + UART (onto GEL-4734)

3.6864 MHz Ceramic Resonator UART (onto GEL-2372)

Radio transmitter/ receiver:

X1: 14.21875MHz XTAL TX

X2: 14.05160MHz XTAL RX

RF suppression devices:

On dc power input:

N.2 inductor 1uH TDK NCL453232T-1R0K

N.2 ferrite bead TDK ZBFS5101

Datalogic_Block_Diagram Revision: 1.00 6/19/2003 page 3of 6

DATALOGIC PROPRIETARY INFORMATIONS

N.2 capacitors X7R C=220nF

N.1 capacitors 2F4 C=100nF

On 232 interface port:

N.4 ferrite bead MURATA BLM21A601S

On 485 interface port:

N.2 ferrite beads MURATA BLM21A601S

Datalogic_Block_Diagram Revision: 1.00 6/19/2003 page 4of 6

DATALOGIC PROPRIETARY INFORMATIONS

STARGATE BLOCK DIAGRAMS

Fig. 1 -Block Diagram of the Connections inside STARGATE RF910MHz BASE

STATION and Printed Circuit Boards.

MAIN BOARD STARGATE RF910MHz (USA)

GEL

4734

Radio Board

RF ?ISA GEL

2372

UART 16550

16 BIT MICROPROCESSOR

M37733

MULTIPLEXER

RS232/RS485

RS232

RS 485

POWER

SUPPLY

PLUG-IN

STEP

DOWN

RS 485

reset

Telital Radio

Module

RT-14 Antenna

Datalogic_Block_Diagram Revision: 1.00 6/19/2003 page 5of 6

DATALOGIC PROPRIETARY INFORMATIONS

Fig. 2 -Block Diagram of the EUT

LEDINDICATOR

(red,orangeandgreen)

MAIN

PROCESSOR

910 MHZ

RADIO

TRANSCEIVER

EXTERNAL

ANTENNA

STEP DOWN

JACKPLUG-IN

5VDC POWERSUPPLY

UART

RS232

PIC

3.6864 MHz

CERAMIC

RESONATOR

12 MHz QUARTZ CRYSTAL

RS485

RESET

UART

3.6864 MHz

CERAMIC

RESONATOR

MULTIPLEXER

Datalogic_Block_Diagram Revision: 1.00 6/19/2003 page 6of 6

DATALOGIC PROPRIETARY INFORMATIONS

Fig. 3 -Block Diagram of Transceiver

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