Iridium Edge

Iridium Edge features an all-in-one SBD module and antenna, with power supply. The plug-and-play satellite IoT terminal can be easily paired with FMB devices in order to expand their functionality to no GSM coverage zones. Current Iridium implementation offers ability to generate and send SBD records after set period after the GSM signal is lost. This ensures constant connectivity for the clients as Iridium network is available globally.

First Start

Wiring diagram

Please note, host controller is an optional addition, it is not required for the iridium edge to achieve its functionality as it mainly cuts power from iridium edge and is used as a on/off switch for iridium edge.

FMX125

FMX640

Installation

Iridium Edge Quick Installation Guide document will show how to install Iridium Edge into the vehicle and prepare the device for configuration with our FMX640 and FMX125 family devices.

Please note: it is essential to follow all the instructions for effective installation, if any further questions arise, please contact your sales representative for more information.

Key Features

• Hardware-Ready Device for Simple, Low Risk Integration
• Satellite Add-On for Truly Global Coverage
• Robust Power Supply for Industrial Installations
• Certified in Key Geographic Markets
• 180° Line of Sight for Compromised, Partially Blocked Locations

Network characteristics

• Frequency: 1616 – 1626.5 MHz
• Message Size: 14 Bytes (Receive), 14 Bytes (Transmit)
• SBD Transceiver: Iridium 9602N
• Antenna: Integrated Iridium® Certified Antenna

Environmental characteristics

• Operating/Storage Temperature Range: -40C to 85C
• Vibration: SAE J1455, Section 4.10

Mechanical characteristics

• Dimensions (LxWxH): 130 x 80 x 30mm
• Ingress Protection: IP 67
• Side & Bottom Cable Exits
• Connector: M12-8 pin male, terminated on 20cm
• Pigtail Cable
• Installation Options: Pole, Screw, Tape

Electrical characteristics

• Power Supply: ( 9-32V), SAE J1455 Load Dump Protected
• Maximum Power: 1.6W (Peak for Short Transmit Burst)
• Low Power Modes: < 200uA
• Reverse Polarity Protection

Interface characteristics

• RS232 AT Command Interface
• On / Off Control Lines

Configuration

FMB Firmware implementation on FMC125

In order to enable Iridium support on FMB, first it is necessary to enable RS232 support and select “satellite backup” mode. Correct configuration is shown in the picture below.

Next, there are a couple of configurable options. In the SBD config, IridiumEdge should be enabled and save/send period Set. This section can be found in the “Features” tab in the configurator.

Setting up Alarm priority records

NOTE: In addition, you can select which IO element can generate Alarm priority record. The configurable IO parameters are listed as SBD IO source in list above. In order to do that you need to configure these IO elements as Panic priority. If properly configured SBD records are generated and sent if there is no GSM connection.



In the scenario shown in the above picture when panic record is made (generated by Digital Input 1 or Digital Input 2) internal 90 seconds timer will start to tick and if in that timeout device will not send the record through GPRS network it will be sent with Iridium satellites.

SBD Upload Limit is configurable and resets every month. This option can ensure that no additional data is used so that no unexpected costs are experienced by the customer. Default value is 8000 (for 8KB plan). This option can be disabled by setting Upload limit to 0.

NOTE: SBD IO source functionality is still being implemented.

FMB Firmware configuration on FMX640/FMX641 devices

FMX640 can be setup with Iridium Edge by activating RS232 short burst data parameters, this can be done visiting this tutorial Here.

PIN OUT Configuration
Pin Number	Signal Name	Color	Signal Direction (With respect to iridium edge)	Description
1	Spare	White	-	Unused
2	Ground	Brown	Input	Signal and power GND
3	RS232_RX	Green	Input	RS232 input
4	RS232_TX	Yellow	Output	RS232 output
5	Power	Pink	Input	9-32 V positive terminal
6	ON/OFF	Grey	Input	Optional line to power down Iridium edge
7	Network available	Blue	Output	-
8	Power detection	Red	Output	Active high when Iridium Edge is powered

Important note There is a noticeable difference in Iridium 8-pin cable layout from the standard version of the cable. There are possible two options that could be taken.

• Purchasing a specific Iridium 8-PIN cable directly from Teltonika. Please contact your administered sales representative in order to purchase.
• Restructuring the cable yourself by cutting one end of the cable and aligning the cable PINs with the reference to the picture above.

Communication Protocol

SBD Packet structure
Timestamp	Longitude	Latitude	SBD AVL ID and flags	DIN/DOUT info	Reserved	Speed
4 bytes	3 bytes	3 bytes	1 bytes	1 bytes	1 bytes	1 bytes

Definitions

• Timestamp – Indicates when record was generated
• Longitude - encoded in 3 bytes data. Server which gets this data should divide result from 46603,375 and subtract 180 in order to get actual longitude value. This coefficient is got in following way: 16777215(maximum 3 bytes value) divided from 360 (maximum longitude value then 180 is added). This calculation is used to fit negative and positive values to 3 bytes width variable.
• Latitude - Latitude is calculated in same way as longitude but since latitude maximum value is two times smaller than longitude it can produce a bit more accurate data. Coefficient for latitude is 93206,75. This coefficient is got in following way: 16777215(maximum 3 bytes value) divided from 180 (maximum latitude value then 90 is added). This calculation is used to fit negative and positive values to 3 bytes width variable.
• SBD AVL ID and flags – Custom id that will indicate what caused the record to be generated (as only periodic records are generated, id is not used)
• Din/Dout info - Displays configured IO elements in parameter id 99422
• Reserved - Not used anywhere, but left due to compatibility with fm6 project.
• Speed – Indicates the speed of the vehicle if configured. If not (or in case of no gps) – will display 255

Data Sending Parameters

Information here includes the data sending parameters which identifies the naming of the parameter in accordance to it's number.

Parameter ID	Parameter name	Min values	Max values	Default values	Description
99420	Iridium Edge	0	1	0	This parameter enables or disables Iridium Edge functionality
99421	Save/Send period	0	1440	1440	This parameter lets to configure Iridium Edge sending period
99422	SBD IO source	0	6	0	SBD IO elements which when enabled are included into the SBD record
151	RS232 Mode	0	26	0	Implement ability to select "Sattelite backup"
99423	SBD Upload Limit	0	30000	8000	Limit to save user from exceeding the monthly plan. Max limit of 30000 due to 30KB plan. If set to 0 – limit will be off.

External links

https://teltonika-gps.com/lt/product/iridium_edge/