Onyx.
Advanced car security solutions
16 Shapira St. Rishon Le - Zion 75052, Israel
Tel: 972-3-9413313 ; Fax: 972-3-9413330
www.onyxtech.co.il ; [email protected]
Page 5 of 12 EGPRS Unit User Guide
2
Block Diagram - HW components
The following block diagram shows the main HW components composing the
EGPRS unit:
Figure 2 - EGPRS Unit: Block Diagram
GSM/GPRS
Modem
Microcontroller
Rechargeable
Battery
GPS
Receiver
RS232
GSM
Ant.
GPS
Patch Ant.
Port A - Purple
Port B - Gray
Port D - Green
Port E - Yellow
Port F - Brown
Digital/Analog Input/Output
Digital Input Line - Ignition
Port C - Blue
RS485
Digital Output Line
Digital Input Line
Digital Input Line
Alarm System
(Optional)
power
source
9-32 V
+/-
Digital Input Line - eNet
GSM/GPRS
Modem
Microcontroller
Rechargeable
Battery
GPS
Receiver
RS232
GSM
Ant.
GPS
Patch Ant.
Port A - Purple
Port B - Gray
Port D - Green
Port E - Yellow
Port F - Brown
Digital/Analog Input/Output
Digital Input Line - Ignition
Port C - Blue
RS485
Digital Output Line
Digital Input Line
Digital Input Line
Alarm System
(Optional)
power
source
9-32 V
+/-
Digital Input Line - eNet
2.1
GPS Module
The GPS receiver simultaneously tracks up to sixteen satellites and provides
accurate satellite positioning data with fast time-to-first-fix (TTFF) with low
power consumption. The highly integrated receiver achieves high performance
and minimizes board size and power consumption requirements.
The module provides complete signal processing from antenna to serial data
output in NMEA messages protocol.
The GPS device is fed and communicates with the EGPRS over a RS-232
serial channel at a 9600bps baud rate. The GPS device holds the GPS receiver
with an antenna on top of it.
2.2
GSM
operating frequency
The EGPRS can operate over the GSM-900 MHz, DCS-1800 MHz and PCS
1900 MHz bands:
1.
GSM-900, GSM-850:
The unit in GSM-900/850 operating mode is of
class 4, in accordance with the specifications, which determines the
nominal 2W peak RF power (+33dBm) on 50 Ohm and sensitivity
greater than -102dBm in all operating conditions.
2.
DCS-1800, PCS 1900:
The unit in DCS-1800 operating mode is of class
1, in accordance with the specifications, which determines the nominal
1W peak RF power (+30dBm) on 50 Ohm and sensitivity greater than -
102dBm in normal operating conditions.