Arcom is the trading name for Arcom Control Systems Inc and Arcom Control Systems Ltd.
Disclaimer
The information in this manual has been carefully checked and is believed to be accurate. Arcom assumes no responsibility
for any infringements of patents or other rights of third parties, which may result from its use.
Arcom assumes no responsibility for any inaccuracies that may be contained in this document. Arcom makes no commitment
to update or keep current the information contained in this manual.
Arcom reserves the right to make improvements to this document and /or product at any time and without notice.
Warranty
This product is supplied with a 3 year limited warranty. The product warranty covers failure of any Arcom manufactured
product caused by manufacturing defects. The warranty on all third party manufactured products utilized by Arcom is limited
to 1 year. Arcom will make all reasonable effort to repair the product or replace it with an identical variant. Arcom reserves the
right to replace the returned product with an alternative variant or an equivalent fit, form and functional product. Delivery
charges will apply to all returned products. Please check www.arcom.com/support
Forms.
for information about Product Return
Trademarks
Windows NT, Windows 98 are trademarks of the Microsoft Corporation.
Linux is a registered trademark of Linus Torvalds.
All other trademarks recognized.
Appendix A - Contacting Arcom .......................................................................................................34
Appendix B - Technical specifications..............................................................................................35
Appendix C - Mechanical specifications ..........................................................................................37
Index ................................................................................................................................................39
The W-E-B Telemetry (Wireless Embedded Baseboard for Telemetry) board is a
rugged, modular platform for applications in telemetry and telematics. The board makes
it easy to integrate three essential features of any new asset monitoring solution wireless modem, GPS receiver and complete power supply solution to power your
system.
Features
Wide DC input voltage range (10V to 30V). •
•
Automotive transient and surge protected.
•
Supply reverse voltage protected.
•
Input power and ignition sensing circuitry.
•
8 / 16bit PC/104 bus interface.
•
On board 5V supply, delivers up to 2.5A (for host CPU and expansion modules).
•
On board 3.6V supply, delivers up to 2.5A (for breakout and wireless modules).
•
On board ±12V supply, delivers up to 250mA (for breakout and PC/104).
•
Extended temperature range lithium back-up battery for GPS module.
•
Dual 16C550 compatible UART provides serial link to wireless modules directly from
PC/104 bus.
•
EMC filtered breakout for two 16C550 serial ports.
•
Breakout for 10/100 Base-T Ethernet (with integrated activity and speed LEDs).
•
Direct Plug ‘n’ Go connection for Siemens MC35i OEM modem module.
•
Direct Plug ‘n’ Go connection for Sony Ericsson GR47/48 OEM modem module.
•
Direct Plug ‘n’ Go connection for Motorola iDEN iO1500 OEM modem module.
•
Direct Plug ‘n’ Go connection for Motorola WiDEN iO200 OEM modem module.
•
Direct Plug ‘n’ Go connection for Trimble Lassen SQ GPS module.
This board contains CMOS devices that could be damaged in the event of static
electricity discharged through them. At all times, please observe anti-static precautions
when handling the board. This includes storing the board in appropriate anti-static
packaging and wearing a wrist strap when handling the board.
Batteries
The W-E-B Telemetry board contains a Lithium battery to maintain the configuration of
the GPS unit, if present.
Do not short circuit the batteries or place on a metal surface where the battery
terminals could be shorted. During shipment the battery is isolated from the
boards circuitry and should be connected before using the board. Please refer
to the link section of this manual for details.
Dispose of used batteries according to the manufacturer’s instructions and
local ordinances. Do not incinerate, crush or otherwise damage the batteries.
The batteries are non-rechargeable. There is a danger of explosion if a lithium
battery is recharged or incorrectly replaced.
The Lithium battery on the W-E-B Telemetry base board has a life expectancy
of 5 years. This battery should only be replaced by qualified service
personnel.
Packaging
Please ensure that should a board need to be returned to Arcom, it is adequately
packed, preferably in the original packing material. If the original packing material is not
available, return the board in an anti-static bag contained within a box that provides
suitable protection.
Electromagnetic compatibility (EMC)
The W-E-B Telemetry board is classified as a component with regard to the European
Community EMC regulations, it is the responsibility of the end user to ensure that
systems using the board are compliant with the appropriate EMC standards.
Arcom EMC tests of the W-E-B Telemetry board have shown that the RF emissions of
the board are well below standard international EMC limits and that it is unlikely to
contribute significantly to the RF emissions spectrum of any system in which it is used.
The optional wireless modules catered for by the W-E-B Telemetry board all have full
regulatory approval from the appropriate agencies.
The following section provides a detailed description of the functions offered by the
W-E-B Telemetry board. This information may be required during development.
The board is 100mm (3.93") by 155mm (6.10") and is 1.6mm (63 thou) thick.
Power supply requirements
The board is designed to accept a 10V to 30V DC power supply, nominally 12V DC.
Power conditioning
The input supply lines are protected using re-settable surface mount fuses. These fuses
can only be reset by power cycling the board.
The PCB also provides protection for reverse voltage and transient voltages to comply
with ETSI EN 301 489-1 V1.4.1, ISO 7637-1 and ISO 7637-2.
On board EMC filtering minimizes conducted noise.
Switch mode power supplies
On board DC/DC converters provide the necessary power rails:
+5V, 2.5A max. •
•
+3.6V, 2.5A max.
•
+12V, 250mA max.
•
-12V, 150mA max.
•
+1.8V, 100mA max (see Sony Ericsson modem module).
Network interface
A 10/100Base-T Ethernet connector is mounted on the front edge of the PCB to allow
direct mounting to a front panel. The RJ45 connector incorporates activity and speed
LEDs. The network connection is provided by the PC/104 processor card and is
connected to the board by a standard RJ45 cable.
Serial interface
A dual port male DB9 connector is mounted on the front edge of the PCB to allow direct
mounting to a front panel. The RS-232 serial connection is provided by the PC/104
processor card and is connected to the board by a standard 20-way IDC ribbon cable.
PC/104 bus support
The board includes an 8bit PC/104 slave interface conforming to IEEE996.1. The
module includes a 16bit connector to accommodate connections for additional interrupt
lines.
A supervisory circuit monitors the DC input supply. This signal creates an interrupt
(Power Fail) to indicate an occurrence of the DC supply voltage falling below 8V DC.
The number of interrupt resources required is minimized by concatenating several
interrupts into a single signal. This interrupt is concatenated with the Ignition Sense
interrupt.
Ignition sense circuit
A supervisory circuit monitors an auxiliary (Ignition) input supply. This signal creates an
interrupt (Ignition Sense) to indicate an occurrence of the DC supply voltage falling
below 8V DC and rising above 8V DC.
The number of interrupt resources required is minimized by concatenating several
interrupts into a single signal. This interrupt is concatenated with the Power Fail
interrupt.
Dual UART 16C552
Two on board 16C550 compatible serial ports support optional wireless modules, whilst
a parallel port supports digital I/O.
Modem ON / OFF control signal
When power is initially applied to the board, the modem modules are in a low power/off
state. Toggle the ON / OFF control signal to turn the modules on. The ON/OFF signal is
provided by the parallel port (bit 3). The address of this signal is Base address (as
selected at LK1) +10H.
To turn the modem module on, follow these steps:
1 Apply power to the board.
2 Write a ‘1’ to bit 3 of parallel port. The status of the signal is (on).
3 Wait 10ms then write a ‘0’ to bit 3 of parallel port. The status of the signal is
(off).
4 Wait 600ms, then write a ‘1’ to bit 3 of parallel port. The status of the signal is
(on).
To turn the Motorola modem module off, write a ‘0’ to bit 3 of parallel port, (off).
To turn the Sony Ericsson / Siemens modem module off, follow these steps:
1 Write a ‘1’ to bit 3 of parallel port. The status of the signal is (on).
2 Wait 10ms, then write a ‘0’ to bit 3 of parallel port. The status of the signal is
(off).
3 Wait 1000ms, then write a ‘1’ to bit 3 of parallel port. The status of the signal is
(on).
Status LEDs
Four status LEDs are provided, in a traffic light stacked arrangement. This is positioned
on the front edge of the PCB to allow direct mounting to a front panel:
A green LED provides visual confirmation of power. •
• A red LED and two yellow LEDS are user controlled.
The LEDs are accessed through the parallel port (bit 0 red; Bit 1 yellow; Bit 2 yellow).
The address of these LEDs is Base address (as selected at LK1) +10H.
Write a ‘1’ to the appropriate bit to turn the LED off.
Write a ‘0’ to the appropriate bit to turn the LED on.
The optional modem modules are secured to the board via four 2mm * 12mm long
posidrive screws and four 4mm long spacers.
These parts are included with the PCB.
Trimble GPS module
The board supports a Trimble “Lassen SQ” GPS module, which is an eight-channel low
power device. The interface to the GPS module is via port 0 of the UART. The physical
address of this port is base address and uses IRQ6 as the default interrupt.
The GPS module is located on the secondary side of the PCB. It is shown in the
following photograph:
Sony Ericsson GPRS module
For worldwide cellular operations the W-E-B Telemetry board supports a Sony Ericsson
GR47 / GR48 modem module. Mounting positions, RTC supply and module interface
connector are all provided. A SIM card connector for the modem module is also
provided on the secondary side of the board. The module’s Real Time Clock back-up
function is provided by a 1.8V battery-backed power supply.
The interface to the Modem is via port 1 of the UART.
The physical address of this port is base address +08H and uses IRQ15 as the default
interrupt.
The Sony Ericsson GPRS module is shown in the following photograph:
Siemens GPRS module
For worldwide cellular operations the board supports a Siemens MC35i modem module.
Mounting positions and module interface connector are all provided. A SIM card
connector for the modem module is also provided on the secondary side of the board.
The interface to the Modem module is via port 1 of the UART.
The physical address of this port is base address +08H and uses IRQ15 as the default
interrupt.
The Siemens GPRS module is shown in the following photograph:
For American cellular operations the board supports a Nextel (Motorola) modem
module. Mounting positions and module interface connector are all provided.
The interface to the Modem module is via port 1 of the UART.
The physical address of this port is base address +08H and uses IRQ15 as the default
interrupt.
The Motorola iDEN module is shown in the following photograph:
The PCB also supports a Nextel (Motorola) WiDEN module. Mounting positions and
module interface connector are all provided. The interface to the modem module is via
port 1 of the UART.
The physical address of this port is base address +08H and uses IRQ15 as the default
interrupt.
The Motorola WiDEN module is shown in the following photograph:
The antenna must be mounted like any other cellular or land mobile radio antenna. For
vehicle applications the best position is usually the center of the vehicle roof, which
provides a fairly symmetric ground plane.
Use this information to help assist you in selecting the appropriate antenna for your
product
Antenna safety
The following statement from the American National Standards Institute (ANSI)
specifies the safety criteria that integrators must use when designing products with
radiating elements:
“The design of the integrated product must be such that the location used and the other
particulars of the antenna comply with the ANSI guidelines concerning Radio
Frequency Energy Exposure and with any other nationally recognized radio frequency
standards that may be applicable thereto.”
For mobile operation with an external antenna, the modem module must be
installed in a manner that provides a minimum separation distance of 300mm
(12”) or more between the antenna and all persons, in order to satisfy FCC RF
exposure requirements for mobile transmitting.
These safety precautions must be observed during all phases of operation.
Manufacturers of cellular terminal equipment are advised to convey the following safety
information:
When in a hospital or health care facility, observe the restrictions on the use of
•
mobiles. Observe the guidelines posted; medical equipment may be sensitive to RF
energy.
• • Switch off cellular equipment before boarding an aircraft. Make sure it cannot be
turned on inadvertently. The operation of wireless appliances in an aircraft is
forbidden.
Do not operate cellular equipment in the presence of flammable gases or fumes.
Switch off cellular equipment when near petrol stations, fuel depots, chemical plants
or where blasting operations are in progress. Operation of electrical equipment in
potentially explosive atmospheres can constitute a safety hazard.
W-E-B Telemetry Technical Manual Appendix A - Contacting Arcom
Appendix A - Contacting Arcom
Arcom sales
Arcom’s sales team is always available to assist you in choosing the board that best
meets your requirements. Contact your local sales office or hotline.
Comprehensive information about our products is available from our web sites:
www.arcom.com
st
Street
and www.arcom.co.uk.
While Arcom’s sales team can assist you in making your decision, the final
choice of boards or systems is solely and wholly the responsibility of the buyer.
Arcom’s entire liability in respect of the boards or systems is as set out in
Arcom’s standard terms and conditions of sale. If you intend to write your own
low level software, you can start with the source code on the disk supplied. This
is example code only to illustrate use on Arcom’s products. It has not been
commercially tested. No warranty is made in respect of this code and Arcom
shall incur no liability whatsoever or howsoever arising from any use made of
the code.