Onyx EGPRS User Manual Download Page 6

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 6 of 12                    EGPRS Unit User Guide   

             

 

 

 

2.3 

Peripheral communication 

The Micro controller interfaces with the alarm system over the RS-485 channel 
and with the GPS over the RS-232 channel. The eNet bi-directional channel is 
able to carry information between various sensors and devices connected to the 
bus. 

The charger is fed from the car battery to charge the internal backup battery. 
The internal backup battery has the ability to be used for up to 10 hours under 
normal operating conditions when external power is disconnected. The EGPRS 
utilizes status triggered charging algorithm in order to not harm the internal 
batteries. 

2.3.1 

RS-232 

This serial communication protocol supports communication over a common 
data line. The EGPRS Micro controller communicates with the GPS device over 
this data line. 

2.3.2 

RS-485 

The EGPRS Micro controller communicates with the alarm system devices over 
the RS-485 data line.  

2.3.3 

eNet 

This bi-directional serial communication protocol can be used to connect 
peripheral devices to the EGPRS such as: alarm units, a portable printer, 
warning lights, distress buttons, and more. 

One of the Open Collector/eNet single line interfaces can be configured as 
eNet. The eNet bus must have a single master and up to 10 slave devices. 

2.3.4 

Single Wire Discretes 

The EGPRS supports six single line interfaces (Inputs only) of types as listed 
below: 

 

3 General Purpose Input Discrete – one of which can be used for VSS 
Odometer measuring, and one optionally supports eNet bi-directional 
communication (See above). 

 

1 digital output – 12v active 200ma. 

 

1 Ignition line (dedicated Input discrete). 

 

1 that can be used as an input or output (according to configuration) and 
can be defined to digital or analog. 

 

Summary of Contents for EGPRS

Page 1: ...13 Fax 972 3 9413330 www onyxtech co il info onyxtech co il Page 1 of 12 EGPRS Unit User Guide EGPRS User Guide Version 1 2 January 2009 Contact Us ERM Electronic Systems 16 Hsar Shapira st Rishon Lez...

Page 2: ...n 3 2 Block Diagram HW components 5 2 1 GPS Module 5 2 2 GSM operating frequency 5 2 3 Peripheral communication 6 2 4 Physical description 7 3 Installation Guide 11 3 1 EGPRS Vehicle Installation 11 T...

Page 3: ...S unit which uses GPRS IP communication or SMS in order to send and receive information regarding the vehicle status and location The EGPRS contains a GPS to provide the vehicle s location data The Mi...

Page 4: ...vanced car security solutions 16 Shapira St Rishon Le Zion 75052 Israel Tel 972 3 9413313 Fax 972 3 9413330 www onyxtech co il info onyxtech co il Page 4 of 12 EGPRS Unit User Guide Figure 1 Product O...

Page 5: ...wer 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 TT...

Page 6: ...pports communication over a common data line The EGPRS Micro controller communicates with the GPS device over this data line 2 3 2 RS 485 The EGPRS Micro controller communicates with the alarm system...

Page 7: ...than 65mm it is very compact and easily assimilated and installed in the car environment The shell which covers the unit is made of hardened plastic The SIM socket is present on the right long of the...

Page 8: ...ructure of the connectors the numbers below the image are pin s number identification 6 5 4 3 2 1 3 2 1 6 5 4 4 3 2 1 6 5 4 3 2 1 3 2 1 6 5 4 4 3 2 1 2 4 4 1 RS485 Connector Description The following...

Page 9: ...t ID Analog ID 4 Port A I O Pull Up Purple Digital Input or Digital Output or Analog In 0 12 1 1 3 1 Port B Output Gray Digital Output active low 2 5 Port C Input Pull Down Blue Digital Input or VSS 2...

Page 10: ...ion 200 mA Current drain Navigation 45 mA Powerdown 5 mA Positive Spike Resistibility 100 Volt for a period of 8 ms Negative Spike Resistibility 100 Volt for a period of 8 ms Backup Batteries 3 x AA N...

Page 11: ...of the I O harness to the Ignition switch ignition on should supply 12 24V to the brown wire 5 Connect the GPS connector to the unit if a GPS is installed Figure 5 Up View 3 1 1 Attention The EGPRS un...

Page 12: ...low it to see the sky as clearly as possible The GPS module must not be installed near the front window in cars with front window The GPS module must be installed with the side marked with UP being th...

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