Sierra Wireless AirLink FXT Series Specifications

Battery Accessory Product
Technical Specification
AirLink FXT Series
WA_DEV_FEX20_PTS_003
002
May 26, 2010
Battery Accessory Product Technical
Specification
Important Notice
Due to the nature of wireless communications, transmission and reception of data can never be
guaranteed. Data may be delayed, corrupted (i.e., have errors) or be totally lost. Although significant
delays or losses of data are rare when wireless devices such as the Sierra Wireless modem are used
in a normal manner with a well-constructed network, the Sierra Wireless modem should not be used
in situations where failure to transmit or receive data could result in damage of any kind to the user or
any other party, including but not limited to personal injury, death, or loss of property. Sierra Wireless
accepts no responsibility for damages of any kind resulting from delays or errors in data transmitted or
received using the Sierra Wireless modem, or for failure of the Sierra Wireless modem to transmit or
receive such data.
Safety and Hazards
Do not operate the Sierra Wireless modem in areas where blasting is in progress, where explosive
atmospheres may be present, near medical equipment, near life support equipment, or any equipment
which may be susceptible to any form of radio interference. In such areas, the Sierra Wireless modem
MUST BE POWERED OFF. The Sierra Wireless modem can transmit signals that could interfere with
this equipment. Do not operate the Sierra Wireless modem in any aircraft, whether the aircraft is on
the ground or in flight. In aircraft, the Sierra Wireless modem MUST BE POWERED OFF. When
operating, the Sierra Wireless modem can transmit signals that could interfere with various onboard
systems.
Note:
Some airlines may permit the use of cellular phones while the aircraft is on the ground and the door is
open. Sierra Wireless modems may be used at this time.
The driver or operator of any vehicle should not operate the Sierra Wireless modem while in control of
a vehicle. Doing so will detract from the driver or operator’s control and operation of that vehicle. In
some states and provinces, operating such communications devices while in control of a vehicle is an
offence.
Limitations of Liability
This manual is provided “as is”. Sierra Wireless makes no warranties of any kind, either expressed or
implied, including any implied warranties of merchantability, fitness for a particular purpose, or
noninfringement. The recipient of the manual shall endorse all risks arising from its use.
The information in this manual is subject to change without notice and does not represent a
commitment on the part of Sierra Wireless. SIERRA WIRELESS AND ITS AFFILIATES
SPECIFICALLY DISCLAIM LIABILITY FOR ANY AND ALL DIRECT, INDIRECT, SPECIAL,
GENERAL, INCIDENTAL, CONSEQUENTIAL, PUNITIVE OR EXEMPLARY DAMAGES INCLUDING,
BUT NOT LIMITED TO, LOSS OF PROFITS OR REVENUE OR ANTICIPATED PROFITS OR
REVENUE ARISING OUT OF THE USE OR INABILITY TO USE ANY SIERRA WIRELESS
PRODUCT, EVEN IF SIERRA WIRELESS AND/OR ITS AFFILIATES HAS BEEN ADVISED OF THE
POSSIBILITY OF SUCH DAMAGES OR THEY ARE FORESEEABLE OR FOR CLAIMS BY ANY
THIRD PARTY.
Notwithstanding the foregoing, in no event shall Sierra Wireless and/or its affiliates aggregate liability
arising under or in connection with the Sierra Wireless product, regardless of the number of events,
occurrences, or claims giving rise to liability, be in excess of the price paid by the purchaser for the
Sierra Wireless product.
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Battery Accessory Product Technical
Specification
Patents
Portions of this product may be covered by some or all of the following US patents:
5,515,013
6,191,741
6,653,979
6,968,171
7,287,162
5,629,960
6,199,168
6,697,030
6,985,757
D442,170
5,845,216
6,339,405
6,785,830
7,023,878
D459,303
5,847,553
6,359,591
6,845,249
7,053,843
D599,256
5,878,234
6,400,336
6,847,830
7,106,569
D560,911
5,890,057
6,516,204
6,876,697
7,145,267
5,929,815
6,561,851
6,879,585
7,200,512
6,169,884
6,643,501
6,886,049
7,295,171
and other patents pending.
This product includes technology licensed from QUALCOMM® 3G
Manufactured or sold by Sierra Wireless or its licensees under one or more patents licensed from
InterDigital Group.
Copyright
© 2010 Sierra Wireless. All rights reserved.
Trademarks
AirCard® and Watcher® are registered trademarks of Sierra Wireless. Sierra Wireless™, AirPrime™,
AirLink™, AirVantage™ and the Sierra Wireless logo are trademarks of Sierra Wireless.
,
, ®, inSIM®, WAVECOM®, WISMO®, Wireless Microprocessor®,
Wireless CPU , Open AT are filed or registered trademarks of Sierra Wireless S.A. in France and/or
in other countries.
®
®
Windows® and Windows Vista® are registered trademarks of Microsoft Corporation.
Macintosh and Mac OS are registered trademarks of Apple Inc., registered in the U.S. and other
countries.
QUALCOMM® is a registered trademark of QUALCOMM Incorporated. Used under license.
Other trademarks are the property of the respective owners.
Contact Information
Sales Desk:
Post:
Fax:
Web:
Phone:
1-604-232-1488
Hours:
8:00 AM to 5:00 PM Pacific Time
E-mail:
sales@sierrawireless.com
Sierra Wireless
13811 Wireless Way
Richmond, BC
Canada
V6V 3A4
1-604-231-1109
www.sierrawireless.com
Consult our website for up-to-date product descriptions, documentation, application notes, firmware
upgrades, troubleshooting tips, and press releases: www.sierrawireless.com
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Battery Accessory Product Technical
Specification
Document History
Version
Date
Updates
001
November 24, 2009
Creation
Updated charging specifications to specify charging method precedence.
002
May 26, 2010
Updated battery accessory photographs.
Reformatted in the rebranded SWI template.
Added section 2 Using the Battery Accessory
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Contents
1. GENERAL DESCRIPTION ................................................................................... 8
1.1.
Overall Dimensions....................................................................................................... 8
1.2.
Battery Cable................................................................................................................ 8
2. USING THE BATTERY ACCESSORY ................................................................. 9
2.1.
Battery Accessory Assembly ......................................................................................... 9
3. BATTERY ACCESSORY INTERFACE DESCRIPTION .................................... 12
3.1.
Front Interface ............................................................................................................ 12
3.1.1.
Operating Voltage ................................................................................................ 13
3.2.
Back Interface............................................................................................................. 13
4. BATTERY ACCESSORY CHARGING ............................................................... 14
4.1.
DC-IN Charging .......................................................................................................... 14
4.2.
USB Charging............................................................................................................. 15
4.3.
Charging Time ............................................................................................................ 15
4.4.
Charging Voltage Specification ................................................................................... 16
4.5.
LED Indicator.............................................................................................................. 16
5. BATTERY CELL INFORMATION ...................................................................... 17
6. AT COMMANDS FOR THE BATTERY ACCESSORY ...................................... 18
6.1.
DC-IN Status .............................................................................................................. 18
6.2.
USB Power Status ...................................................................................................... 18
6.3.
Battery Level Status.................................................................................................... 20
6.4.
Battery Cell Connection Anomaly ................................................................................ 20
7. RECOMMENDATIONS AND OTHER INFORMATION ...................................... 21
8. REFERENCES ................................................................................................... 22
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List of Figures
Figure 1.
Fastrack Xtend Battery Accessory ................................................................................ 8
Figure 2.
Battery Accessory 6-pin Micro-Fit Connector................................................................. 8
Figure 3.
Fastrack Xtend with Battery Accessory Attached ........................................................... 9
Figure 4.
Battery Accessory Front Interface ............................................................................... 12
Figure 5.
Battery Accessory Back Interface................................................................................ 13
Figure 6.
DC-IN Charging .......................................................................................................... 14
Figure 7.
USB Connection from the Fastrack Xtend ................................................................... 15
Figure 8.
USB Charging............................................................................................................. 15
Figure 9.
USB Detection by Modem Software ............................................................................ 19
Figure 10.
Setting Up USB Communications................................................................................ 19
Figure 11.
ADC1 Reading Using USB.......................................................................................... 20
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List of Tables
Table 1:
Interface Connector Pin Description ............................................................................ 12
Table 2:
Battery Accessory Charging Time ............................................................................... 15
Table 3:
Charging Voltage Specifications ................................................................................. 16
Table 4:
Charger State ............................................................................................................. 16
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1. General Description
The Fastrack Xtend battery accessory consists of a slow charging circuit and a NiMH battery cell. It is
designed for use with the Fastrack Xtend to suit M2M system requirements. The 85°C operating
temperature fulfills the high power transmission condition required in GPRS class 12 and WCDMA.
With the ADC (Analog to Digital Converter) feature of the Fastrack Xtend, the battery accessory status
can be easily monitored by AT commands.
1.1.
Overall Dimensions

Length:
89 mm


Width:
Thickness:
60mm
30mm

Weight:
115g
Battery Accessory
Interface Connector
Figure 1. Fastrack Xtend Battery Accessory
1.2.
Battery Cable
The battery accessory is connected to the Fastrack Xtend through the battery cable. The battery cable
is a 6-pin Micro-Fit connector that comes packaged with the battery accessory.
Pin 6
Pin 10
Pin 1
Pin 4
Pin 6
Pin 1
Figure 2. Battery Accessory 6-pin Micro-Fit Connector
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2. Using the Battery Accessory
Refer to the following steps for instructions on how to use the battery accessory with the Fastrack
Xtend.
Fastrack Xtend
Battery Accessory
Battery Cable
Figure 3. Fastrack Xtend with Battery Accessory Attached
2.1.
Battery Accessory Assembly
1. Remove the two screws from the guard plate of
the battery accessory.
2. Mount the Fastrack Xtend on the battery
accessory by aligning the groove above the
battery accessory with the notch beneath the
Fastrack Xtend.
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Battery Accessory Product Technical
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Using the Battery Accessory
3. Slide the Fastrack Xtend all the way into the
battery accessory.
4. Make sure that the Fastrack Xtend and the battery
accessory are properly aligned together.
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Using the Battery Accessory
5. Screw the guard plate back into the battery
accessory.
6. Connect the Fastrack Xtend and the battery
accessory using the battery cable.
7. Connect the battery cable to the 6-wire power
cable.
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3. Battery Accessory Interface
Description
3.1.
Front Interface
Figure 4. Battery Accessory Front Interface
Refer to the following table for the pin description of the interface connector.
Table 1:
Interface Connector Pin Description
Voltage
Pin #
Signal Name
I/O Type
Description
Min
Typical
4.75
5V
USB power input
External power input (Power coming in
from the Fastrack Xtend)
1
Vbus
I
2
Vbatt
I
4V
3
Bat
O
4.2V
4
GND
-
GND
5
DC-IN
I
6
BAT-ID
O
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7.5V
13.2V
TBD
Rev 002
Max
4.8V
Rechargeable Battery output
Power Ground
32V
DC input power for battery charging
Battery ID with a resistor connected to
GND
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Battery Accessory Product Technical
Specification
3.1.1.
Battery Accessory Interface
Description
Operating Voltage
The input operating voltages for DC-IN and USB are as follows:

DC-IN
7.5V to 32V

USB
5.0V
And the output voltage is as follows:

Battery
4.2V(typical, at the end of charge)
DC-IN is the power supply input of the Fastrack Xtend ranging from 4.75V to 32V. In case the battery
accessory is used, the DC-IN voltage range should be restricted to 7.5V to 32V to ensure proper
battery accessory charging (charging is not effective below 7.5V). For more details about the Fastrack
Xtend operating voltage and current consumption, refer to document [2] AirLink FXT Series User
Guide.
3.2.
Back Interface
LED Status Indicator
Figure 5. Battery Accessory Back Interface
Note:
The LED Status indicator is a bi-color LED that is located at the back of the battery accessory. Refer
to section 4.5 LED Indicator for more information on the LED status indicator.
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4. Battery Accessory Charging
The battery accessory charges the battery cell in slow charging mode by either DC-IN or USB power
source. The charging current is controlled by the battery accessory to avoid DC-IN or USB current
surges and protects the internal battery cell against over voltage. The output voltage of the battery
accessory ranges from 3Vmin to 4.3Vmax at room temperature.
Note:
4.1.
If both DC-IN and the USB power source are connected, charging through DC-IN takes precedence if
the input USB voltage is 5V or below. Otherwise, charging via USB takes precedence.
DC-IN Charging
Pin 5 of the Micro-fit connector is connected to DC-IN, which can be used to charge the battery
accessory. DC-IN is the external power source of the Fastrack Xtend accessible through the battery
cable.
To use DC-IN charging, the power cable with DC-IN (7.5V to 32V) is plugged to the battery cable and
attached to the battery accessory as shown in the figure below.
Fastrack Xtend
Power Cable
Battery Cable
Battery Accessory
Figure 6. DC-IN Charging
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Battery Accessory Product Technical
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4.2.
Battery Accessory Charging
USB Charging
Pin 1 of the Micro-fit connector is connected to Vbus, which is used to charge the battery accessory
via USB. The USB connector is located on the front interface of the Fastrack Xtend.
USB Interface from the Fastrack Xtend
Figure 7. USB Connection from the Fastrack Xtend
For USB charging, a USB cable is connected to the Fastrack Xtend while it is connected to the battery
accessory via the battery cable as shown in the figure below.
Fastrack Xtend
Battery Cable
USB Cable
Battery Accessory
Figure 8. USB Charging
For more information about these connections, refer to document [2] AirLink FXT Series User Guide.
4.3.
Charging Time
Refer to the following table for the charging times for both DC-IN and USB charging.
Table 2:
Battery Accessory Charging Time
Battery Type
Battery Capacity
NiMH
500mAH
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Power Source
Charging Time
DC-IN
~14Hrs
USB
~16Hrs
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Battery Accessory Product Technical
Specification
4.4.
Charging Voltage Specification
Refer to the following table for the charging voltage specifications for both DC-IN and USB charging.
Table 3:
Charging Voltage Specifications
Charging Current
Power Source
Input Voltage
Maximum Charging Voltage
Maximum
Continue
DC-IN
DC 7.5 – 32V
4.9V
128mA
20mA
USB
DC 5V
4.8V
118mA
14mA
Note:
There is a discrepancy between the input voltage of the Fastrack Xtend and the input voltage of the
battery accessory to ensure proper battery accessory charging. For more information, refer to
document [2] AirLink FXT Series User Guide.
4.5.
LED Indicator
The operating status of the charger is defined by the bi-color LED indicator. Refer to the following
table for the LED status and its corresponding definition.
Table 4:
Charger State
LED Light Activity
Charger Status
Red LED ON
Battery level is below 3.6V
Green LED On
Battery level is above 3.7V
LED OFF
DC-IN or USB is NOT connected
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5. Battery Cell Information

Type of Battery Cell: NiMH

Nominal Voltage: 3.6V

Typical Capacity: 500mAh

Temperature Range:
 Storage:
-40°C to 85°C
 Discharge: -20°C to 85°C

Charge:
0°C to 85°C

Maximum Discharge Current (cont): 1500mA

Life Expectancy (typical): At least 1 year

IEC Cycle: 1000 Cycles (IEC61951-2)
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6. AT Commands for the Battery
Accessory
There are three different methods for monitoring the battery status. The user can:

check the presence of DC-IN charging


check the presence of USB charging
check how much charge is available in the battery accessory
6.1.
DC-IN Status
GPIO1 is an internal signal of the Fastrack Xtend and is dedicated for DC-IN status monitoring.
GPIO1 can be controlled by Fastrack Xtend users using AT Commands.
When the power is applied on DC-IN, GPIO1 is pulled down to logic 0, and when the power is
disconnected on DC-IN, it is pulled up to logic 1.
To monitor the GPIO1 level, use a communication software such as HyperTerminal and enter the
following AT Commands:

Note:

6.2.
To set GPIO1 as input, enter
AT+WIOM=1,”GPIO1”,0
GPIO1 needs to be set as an input initially.
To read GPIO1 status, enter
AT+WIOR=”GPIO1”
USB Power Status
The standard USB interface provides a +5V power supply signal, which can be used to charge the
battery accessory. This source is limited since the default mode of the USB power cannot provide
more than 100mA. Consequently, the Fastrack Xtend cannot be used in Communication mode with
the USB source unless a charged battery is connected. Likewise, the USB power input has the
capability to charge the battery with a maximum current of 100mA.
Note:
The USB power may provide more than 100mA provided the mode of the USB power is changed to
something other than the default mode.
USB detection is done via modem software. To enable USB communications between the Fastrack
Xtend and the application, use the UART1 connection and a communication software such as
HyperTerminal and enter the AT Command AT+WMFM=0,1,3.
Note:
Sending the AT Command AT+WMFM=0,1,3 is only done via UART1.
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Battery Accessory Product Technical
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AT Commands for the Battery
Accessory
Figure 9. USB Detection by Modem Software
After USB connection has been detected and the USB driver has been installed, additional options –
Wavecom USB Wireless CPU and an extra COM port are made available in the COM port selection
list.
Figure 10.
Setting Up USB Communications
For more information about USB communications between the Fastrack Xtend and applications, refer
to document [3] AirLink FXT Series Quick Starting Guide and Development Kit Description.
For more details regarding enhanced power mode, refer to document [4] USB Power Distribution.
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Battery Accessory Product Technical
Specification
6.3.
AT Commands for the Battery
Accessory
Battery Level Status
ADC1 is an internal signal of the Fastrack Xtend and is dedicated for measuring the battery accessory
voltage. From the ADC1value, a specific conversion is necessary to get the battery voltage.
The formula of the battery level to ADC1 reading (expressed in mV) is detailed below:
Battery voltage (Vbat) = 3.212 x ADC1 reading
For example, if ADC1 reading by AT command is 1218, then Vbat level = 3.212 x 1218 = 3912mV.
To monitor the battery level status, use a communication software such as HyperTerminal and enter
the following AT Command:
AT+ADC?
ADC1 Reading
6.4.
Battery Cell Connection Anomaly
It is possible to detect if the battery cell is not properly connected inside the battery accessory.
There are two different readings to identify this anomaly as described below.

If DC-IN is used, ADC1 reads 5V steady on the battery terminal.

If USB is used, ADC1 reads a pulse-shaped voltage waveform on the battery terminal (due to
the USB current limitation which is 100mA). Consequently, the voltage measured is not
stable. Refer to the following figure.
Figure 11.
ADC1 Reading Using USB
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7. Recommendations and Other
Information

When used for the first time, or after a long time (more than a month) of storage, 2 to 3 times
of charging and discharging cycles are required to optimize the battery performance
(capacity).

When the battery has not been used for a long period of time, recharge it before use.


Disconnect the DC-IN or the USB cable from the Fastrack Xtend modem if the device is not to
be used for a long time.
It is normal for the battery accessory to increase in temperature by up to 10°C during charging.

The charging temperature of the battery accessory is from 0°C to 85°C.

Do not open or modify the battery accessory. The battery accessory is designed using NiMH
and modifying the product by using other types of battery cells (e.g. NiCd, Alkaline etc.) with
different capacities may lead to a burst, causing personal injury.

Battery storage temperature is from -40°C to 85°C.

Do not wet, incinerate or disassemble the battery accessory.

Do not short circuit the battery accessory.

For indoor and dry location use only. Do not expose the battery accessory to rain, snow or
extreme conditions.
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8. References
For more details, several reference documents can be consulted. The Sierra Wireless documents
referenced herein are provided in the Sierra Wireless documentation package; however, the general
reference documents which are not Sierra Wireless owned are not provided in the documentation
package.
[1]
AT Commands Interface Guide
Reference: WM_DEV_OAT_UGD_079
[2]
AirLink FXT Series User Guide
Reference: WA_DEV_FEX20_UGD_002
[3]
AirLink FXT Series Quick Starting Guide and Development Kit Description
Reference: WA_DEV_FEX20_UGD_003
[4]
USB Power Distribution
Reference: Universal Serial Bus Specification Revision 2.0
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