FALCOM STEPPII-55-LT Guide

THIS DOCUMENT IS AVAILABLE AT HTTP://WWW.FALCOM.DE/.
STEPPII-55/56-LT
Hardware description
Version 1.01; U dated: Tue 29 May 2007

STEPPII-55/56-LT HARDWARE DESCRIPTION VERSION 1.01
Table of contents
1 INTRODUCTION ........................................................................ 6
1.1 GENERAL ............................................................................................................................... 6
1.2 CIRCUIT CONCEPT .................................................................................................................... 7
1.3 SCOPE OF DELIVERY ................................................................................................................. 8
1.4 USED ABBREVIATIONS ................................................................................................................ 8
1.5 RELATED DOCUMENTS ............................................................................................................... 9
2 SECURITY ............................................................................... 10
2.1 GENERAL INFORMATION ............................................................................................................ 10
2.2 E POSURE TO RF ENERGY ....................................................................................................... 10
2.3 EFFICIENT MODEM OPERATION .................................................................................................... 10
2.4 ANTENNA CARE AND REPLACEMENT ............................................................................................. 11
2.5 DRIVING ............................................................................................................................... 11
2.6 ELECTRONIC DEVICES .............................................................................................................. 11
2.7 VEHICLE ELECTRONIC EQUIPMENT ............................................................................................... 11
2.8 MEDICAL ELECTRONIC EQUIPMENT ............................................................................................... 11
2.9 AIRCRAFT ............................................................................................................................. 11
2.10 CHILDREN .......................................................................................................................... 12
2.11 BLASTING AREAS .................................................................................................................. 12
2.12 POTENTIALLY E PLOSIVE ATMOSPHERES ..................................................................................... 12
2.13 NON-IONIZING RADIATION ........................................................................................................ 12
2.14 BATTERY SAFETY ................................................................................................................. 12
3 SAFETY STANDARDS ............................................................ 14
4 TECHNICAL DATA .................................................................. 15
4.1 GENERAL SPECIFICATIONS OF TERMINAL STEPPII-55/56-LT ........................................................ 15
4.1.1 Power consumption ....................................................................................................... 16
4.1.2 Operating temperatures ................................................................................................. 16
4.2 BATTERY TECHNICAL DATA ...................................................................................................... 17
4.3 TECHNICAL SPECIFICATIONS OF GSM/GPRS ENGINE* ................................................................... 18
4.3.1 Air interface of the STEPPII-55/56-LT GSM/GPRS part ............................................... 19
4.4 TECHNICAL SPECIFICATIONS OF GPS RECEIVER ............................................................................. 21
4.5 NMEA DATA MESSAGE ........................................................................................................... 22
5 FUNCTIONAL DESCRIPTION ................................................. 23
5.1 HOW DOES IT WORK ................................................................................................................ 23
5.2 FALCOM STEPPII-55/56-LT TYPICAL APPLICATIONS ............................................................... 24
6 STEPPII-55/56-LT APPLICATION INTERFACE ..................... 27
6.1 POWER SUPPLY ..................................................................................................................... 27
6.1.1 Power up/down scenarios .............................................................................................. 27
6.1.2 Power supply pins (14, 15 and 16) on the 16-pin connector .......................................... 27
6.1.3 Automatic shutdown ...................................................................................................... 27
6.1.3.1 Over voltage shutdown ................................................................................................................ 28
6.1.4 Charging & Discharging process of the battery ............................................................. 28
6.2 AUTOMATIC GPRS MULTISLOT CLASS CHANGE ............................................................................ 28
6.3 DETERMINING THE E TERNAL EQUIPMENT TYPE ............................................................................ 28
7 HARDWARE INTERFACES .................................................... 30
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STEPPII-55/56-LT HARDWARE DESCRIPTION VERSION 1.01
7.1 INTERFACE A (16-PIN MOLE 43045-1609) .............................................................................. 31
7.1.1 Description of the 16-pin connector ............................................................................... 31
7.1.2 Special pin description ................................................................................................... 32
7.1.2.1 Analog inputs (pin 2, 4) ................................................................................................................ 32
7.1.2.2 Inputs (pin 6, 8, 1 , 12) ................................................................................................................ 33
7.1.2.3 Outputs (pin 5, 7, 9, 11) .............................................................................................................. 34
7.1.2.4 BATT ON/OFF (pin 14) ................................................................................................................ 34
7.1.2.5 Ignition (pin 13) ............................................................................................................................ 35
7.2 INTERFACE B (SIM CARD INTERFACE MOLE -91228-0002) .......................................................... 36
7.3 INTERFACES C AND D ............................................................................................................. 36
7.4 INTERFACE E (AMP 558556-1 CONNECTOR) ............................................................................ 37
7.4.1 The 15- pin connector description ................................................................................. 37
7.4.2 Special pin description ................................................................................................... 38
7.4.2.1 VC 5 ............................................................................................................................................. 38
7.4.2.2 Boot select ................................................................................................................................... 38
7.4.2.3 Serial communication signals (RxA, TxA) .................................................................................... 38
7.4.2.4 Speaker outputs characteristics ................................................................................................... 39
7.5 INTERFACE F (LED’S DESCRIPTION) ........................................................................................... 39
7.6 INTERFACE E (MOUNTING HOLES) .............................................................................................. 40
7.6.1.1 Mounting the cradle to the terminal .............................................................................................. 4
7.6.1.2 Placing the terminal ...................................................................................................................... 41
8 HOUSING ................................................................................. 42
STEPPII-55/56-LT-MOUNTING CRADLE ............................... 43
10 RF EXPOSURES ................................................................... 44
11 APPENDIX ............................................................................. 45
11.1 SCHEMATICS ....................................................................................................................... 45
11.1.1 Installation guidance for 16-pin Molex connector ......................................................... 45
11.1.2 Installation guidance for 15-pin AMP connector .......................................................... 46
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STEPPII-55/56-LT HARDWARE DESCRIPTION VERSION 1.01
Version history:
Version
number
Author Changes Change date
1.00 F. Beqiri Initial release 23/02/2007
1.01 F. Beqiri
The operating voltage (VVC+ and GND) is protected from reverse pole
connection as long no grounded antenna and/or an AMP connector is NOT
connected to the STEPPII (see chapter 6.1).
29/05/2007
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STEPPII-55/56-LT HARDWARE DESCRIPTION VERSION 1.01
Cautions
Information furnished herein by FALCOM is accurate and reliable. However no
responsibility is assumed for its use.
Please read carefully the safety precautions.
If you have any technical questions regarding this document or the product
described in it please contact your vendor.
General information about FALCOM and its range of products are available at the
following Internet address: http://www.falcom.de/
Trademarks
Some mentioned products are registered trademarks of their respective companies.
Copyright
This documentation is copyrighted by FALCOM WIRELESS COMMUNICATIONS GmbH with all
rights reserved. No part of this documentation may be produced in any form without
the prior written permission of FALCOM WIRELESS COMMUNICATIONS GmbH.
FALCOM Wireless Communications GmbH.
No patent liability is assumed with respect to the use of the information contained
herein.
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STEPPII-55/56-LT HARDWARE DESCRIPTION VERSION 1.01
1 INTRODUCTION
This product manual is only addressed to qualified personnel which is well skilled in
electronical/electrical installation and not addressed to private consumers/end
users. The installation implementing or setting into operation of the product can only
be performed by this qualified personnel.
1.1 General
This description is focused on the GSM/GPRS and GPS terminal STEPPII-55/56-LT from
FALCOM GmbH. It contains information about purpose and use of the STEPPII-55/56-
LT concept.
In order quickly to start and immediately and comprehensive to use all functions and
to avoid any mistakes of STEPPII-55/56-LT terminal on your utilization we recommend
to read the following references and suggestions for using your new STEPPII-55/56-LT
terminal.
The STEPPII-55/56-LT is a Plug-and-Play device which provides powerful state-of-the
art technologies (GSM GPS internet) and makes them available for quick and easy
integration into a number of applications for the vertical and horizontal market. The
new STEPPII-55/56-LT concept is a Full Type Approved combined GSM/GPRS/GPS
Smart Terminal.
The compact design of the GSM/GPRS/GSM STEPPII-55/56-LT terminal integrates it in
an all-in-one solution. This combination concept and internally embedded software
(known as firmware) make it available to be used in a wild range of tracking
solutions such as fleet management vehicle tracking navigation emergency
calling location-based services and many others.
The STEPPII-55/56-LT is designed for use on any GSM850 GSM1800 and GSM1900
network. This single compact device is Tri-band GSM/GPRS engine that works on the
three frequencies GSM 850MHz GSM 1800 MHz and GSM 1900 MHz it supports also
state-of-art GPS technology for satellite navigation.
The embedded firmware based on the eCos operating system for the TCP/IP
communication protocol (TCP/IP stack) converts data streams into data packets
and makes GPRS traffic possible for industrial and automotive applications. No PDA
or laptop is needed for establishing a GPRS connection. It has its own TCP/IP and PPP
stack and will work as a stand-alone terminal. STEPPII-55/56-LT features GPRS Multislot
class 10 and supports the GPRS coding schemes CS-1 CS-2 CS-3 and CS-4. The
STEPPII-55/56-LT terminal can send and receive data by GSM and GPRS networks. It
supports SMS data and voice calls as well as Internet and e-mail. The STEPPII-55/56-LT
terminal can be easily controlled by using SMS and PRSF commands provided on the
embedded software for all kinds of operations.
The internal advanced GPS system uses twelve parallel channels providing highly
accurate positional speed time and date information. Using satellite signals the
embedded GPS module enables users to determine the position of device
anywhere in the world. The STEPPII-55/56-LT module has an integrated TCXO that also
improves the GPS system performance. Due to the temperature stabilizing its position
is determined more precisely.
A compact “stacked FLASH/SRAM” device stores the STEPPII-55/56-LT software in the
FLASH memory section of terminal and a static RAM section provides the additional
storage capacity required by GPRS connectivity.
The physical interfaces to the terminal application are made through integrated
connectors. These are required for controlling the unit receiving GPS location data
transferring data and audio signals and providing power supply lines. STEPPII-55/56-LT
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STEPPII-55/56-LT HARDWARE DESCRIPTION VERSION 1.01
provides a serial interface (2-wire and GND on the 16-pin AMP connector) giving you
maximum flexibility for local use.
The internal backup Battery (LiIon- 850 mA/h) is available in case of external Power
failure.
Figure 1 shows the front and backside of the STEPPII-55/56-LT.
a) front side b) back side
Figure 1: Front and back side of STEPPII-55/56-LT
1.2 Circuit conce t
The STEPPII-55/56-LT architecture includes the following major functional components
(see figure 2):
Architecture integrates:
high-performance Tri Band GSM/GPRS core
12 parallel channel low-power GPS core
ARM7TDMI processor that controls all functions of the system
Power Control circuitry with 850 mAh Li-Ion backup battery
Audio amplifier
Interface circuitry
Physical interfaces:
16-pin Molex connector (Type: Molex 43045-1609 and counterpart:
Casing: 43025-1600 and Box type spring contact: 43031-0001) for power
supply and I/O’s
15-pin AMP connector (Type: AMP5-558556-1 and counterpart: 558666-
1) for audio interfaces and software update
SIM Card reader (Type: Molex-91228-0002 small SIM Card)
GSM antenna interface (Type: Connector 50 Ω Fakra/Radiall SMB-male)
GPS antenna interface (Type: Connector 50 Ω Fakra/Radiall SMB-male)
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STEPPII-55/56-LT HARDWARE DESCRIPTION VERSION 1.01
Figure 2: Architecture of the STEPPII-55/56-LT terminal
1.3 Sco e of delivery
Check the contents of the package. In case of damaged or missing any item
please contact your dealer immediately.
Concerning the STEPPII-LT there are four different terminals which operate in the
different frequencies:
STEPPII-55-LT is a Tri-band device which operates in the three
frequencies GSM 900 MHz DCS 1800 MHz and PCS 1900 MHz and is
available to use in the European and Asian Networks.
STEPPII-56-LT is a Tri-band device which operates in the three
frequencies GSM 850 MHz DCS 1800 MHz and PCS 1900 MHz and is
available to use in the American Networks.
Regarding the electrical interfaces mechanical specification (dimension form etc.)
and electrical specification are the same to all terminals.
Please note that according to your requirements you can choose the desired
STEPPII-LT device.
1.4 Used abbreviations
Abbreviation Description
ASIC Application Specific Integrated Circuit
DOP Dilution of Precision
GPS Global Positioning System
GSM Global Standard for Mobile Communications
GGA GPS Fixed Data
HDOP Horizontal DOP
HW Hardware
IMEI International Mobile Equipment Identity
I/O Input/Output
NMEA National Marine Electronics Association
PRN Pseudorandom Noise Number – The Identity of GPS satellites
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STEPPII-55/56-LT HARDWARE DESCRIPTION VERSION 1.01
RF Radio Frequency
RTC Real Time Clock
R QUAL Received Signal Quality
SIM Subscriber Identification Module
SMS Short Message Service
SRAM Static Random Access Memory
TA Terminal Adapter
TE Terminal Equipment
TP Transmit Protocol
TTFF Time to First Fix
SA Selective Availability
WAAS Wide Area Augmentation System
MSK Minimum Shift Keying
Table 1: Used abbreviations
1.5 Related documents
1. ETSI GSM 7. 5:“Use of Data Terminal Equipment–Data Circuit terminating Equipment
interface for Short Message Service and Cell Broadcast Service”
2. ETSI GSM 7. 7“AT command set for GSM Mobile Equipment”
3. ITU-T V.25ter “Serial asynchronous automatic dialing and control”
4. SiRF binary and NMEA protocol specification
5. steppII_getting_started.pdf
6. steppII_firmware_2.3.xx_manual.pdf (supporting GSM & GPRS services)
7. steppII_firmware_1.6.xx_manual.pdf (supporting GSM services, only)
8. falcom_eCos_SDK_user_guide.pdf
9. Application_notes_on_vehicle_mounting.pdf
1 . AppNotes_connecting_a_bar_code_scanner_to a_STEPPII.pdf
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STEPPII-55/56-LT HARDWARE DESCRIPTION VERSION 1.01
2 SECURITY
IMPORTANT FOR THE EFFICIENT AND SAFE OPERATION OF YOUR GSM-MODEM READ
THIS INFORMATION BEFORE USE!
Your cellular engine STEPPII-55/56-LT is one of the most exciting and innovative
electronic products ever developed. With it you can stay in contact with your office
your home emergency services and others wherever service is provided.
This chapter contains important information for the safe and reliable use of the
STEPPII-55/56-LT. Please read this chapter carefully before starting to use the cellular
engine STEPPII-55/56-LT.
2.1 General information
Your STEPPII-55/56-LT device utilizes the GSM/GPRS/GPS standard for cellular
technology. GSM/GPRS is a newer radio frequency („RF“) technology than the
current FM technology that has been used for radio communications for decades.
The GSM standard has been established for use in the European community and
elsewhere. Your modem is actually a low power radio transmitter and receiver. It
sends out and receives radio frequency energy. When you use your modem the
cellular system handling your calls controls both the radio frequency and the power
level of your cellular modem.
For the use of the acquired devices SIM cards are needed which are not included in
the scope of delivery of the device. The SIM cards can be acquired e.g. by specific
providers. From the use of the SIM cards can result additional costs which are to be
borne by the purchaser (client) of the devices. The seller does not cover the extra
costs for the use of the devices. The seller gives no recommendation for the use of
specific SIM cards and does not liable also for the fact that the devices are usable
with all available SIM cards. The seller also covers no other costs that are needed for
the application of the customer in connection with this device.
2.2 Ex osure to RF energy
There has been some public concern about possible health effects of using a GSM
modem. Although research on health effects from RF energy has focused for many
years on the current RF technology scientists have begun research regarding newer
radio technologies such as GSM. After existing research had been reviewed and
after compliance to all applicable safety standards had been tested it has been
concluded that the product is fit for use.
If you are concerned about exposure to RF energy there are things you can do to
minimize exposure. Obviously limiting the duration of your calls will reduce your
exposure to RF energy. In addition you can reduce RF exposure by operating your
cellular modem efficiently by following the guidelines below.
2.3 Efficient modem o eration
In order to operate your modem at the lowest power level consistent with
satisfactory call quality please take note of the following hints.
If your modem has an extendible antenna extend it fully. Some models allow you to
place a call with the antenna retracted. However your modem operates more
efficiently with the antenna fully extended.
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STEPPII-55/56-LT HARDWARE DESCRIPTION VERSION 1.01
Do not hold the antenna when the modem is „IN USE“. Holding the antenna affects
call quality and may cause the modem to operate at a higher power level than
needed.
2.4 Antenna care and re lacement
Do not use the modem with a damaged antenna. If a damaged antenna comes
into contact with the skin a minor burn may result. Replace a damaged antenna
immediately. Consult your manual to see if you may change the antenna yourself. If
so use only a manufacturer-approved antenna. Otherwise have your antenna
repaired by a qualified technician.
Use only the supplied or approved antenna. Unauthorized antennas modifications
or attachments could damage the modem and may contravene local RF emission
regulations or invalidate type approval.
2.5 Driving
Check the laws and regulations on the use of cellular devices in the area where you
drive. Always obey them. Also when using your modem while driving please pay full
attention to driving pull off the road and park before making or answering a call if
driving conditions so require. When applications are prepared for mobile use they
should fulfill road-safety instructions of the current law!
2.6 Electronic devices
Most electronic equipment for example in hospitals and motor vehicles is shielded
from RF energy. However RF energy may affect some malfunctioning or improperly
shielded electronic equipment.
2.7 Vehicle electronic equi ment
Check your vehicle manufacturer’s representative to determine if any on board
electronic equipment is adequately shielded from RF energy.
2.8 Medical electronic equi ment
Consult the manufacturer of any personal medical devices (such as pacemakers
hearing aids etc.) to determine if they are adequately shielded from external RF
energy.
Turn your STEPPII-55/56-LT device OFF in health care facilities when any regulations
posted in the area instruct you to do so. Hospitals or health care facilities may be
using RF monitoring equipment.
2.9 Aircraft
Turn your STEPPII-55/56-LT OFF before boarding any aircraft.
Use it on the ground only with crew permission.
Do not use it in the air.
To prevent possible interference with aircraft systems Federal Aviation Administration
(FAA) regulations require you to have permission from a crew member to use your
modem while the plane is on the ground. To prevent interference with cellular
systems local RF regulations prohibit using your modem whilst airborne.
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STEPPII-55/56-LT HARDWARE DESCRIPTION VERSION 1.01
2.10Children
Do not allow children to play with your STEPPII-55/56-LT device. It is not a toy. Children
could hurt themselves or others (by poking themselves or others in the eye with the
antenna for example). Children could damage the modem or make calls that
increase your modem bills.
2.11Blasting areas
To avoid interfering with blasting operations turn your unit OFF when in a “blasting
area” or in areas posted: „turn off two-way radio“. Construction crew often use
remote control RF devices to set off explosives.
2.12Potentially ex losive atmos heres
Turn your STEPPII-55/56-LT device OFF when in any area with a potentially explosive
atmosphere. It is rare but your modem or its accessories could generate sparks.
Sparks in such areas could cause an explosion or fire resulting in bodily injury or even
death.
Areas with a potentially explosive atmosphere are often but not always clearly
marked. They include fuelling areas such as petrol stations; below decks on boats;
fuel or chemical transfer or storage facilities; and areas where the air contains
chemicals or particles such as grain dust or metal powders.
Do not transport or store flammable gas liquid or explosives in the compartment of
your vehicle which contains your modem or accessories.
Before using your modem in a vehicle powered by liquefied petroleum gas (such as
propane or butane) ensure that the vehicle complies with the relevant fire and
safety regulations of the country in which the vehicle is to be used.
2.13Non-ionizing radiation
As with other mobile radio transmitting equipment users are advised that for
satisfactory operation and for the safety of personnel it is recommended that no
part of the human body is allowed to come too close to the antenna during
operation of the equipment.
The radio equipment shall be connected to the antenna via a non-radiating 50 Ohm
coaxial cable.
The antenna shall be mounted in such a position that no part of the human body will
normally rest close to any part of the antenna. It is also recommended to use the
equipment not close to medical devices as for example hearing aids and
pacemakers.
2.14Battery safety
Mistreating the battery may cause the battery to get hot crack or inflame and
cause serious injury. In order to avoid any damage and extend the life expectancy
of battery please follow the safety rules listed below before using the STEPPII-55/56-
LT device:
•Do not place the device (battery) on, in or near fires, apparatus that
provide heat, or other high-temperature locations. Do not place the
device (battery) in direct sunshine, or use or store the battery inside cars in
hot weather. Doing so may cause the battery to generate heat, crack, or
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STEPPII-55/56-LT HARDWARE DESCRIPTION VERSION 1.01
inflame. Using the battery in this manner may also result in a loss of
performance.
•Do not connect the pin 4 on the 6-pin MOLEX connector to any positive
pole of supply voltage.
•Do not disassemble the unit and modify the battery.
•Immediately discontinue use of the battery if, while using, charging, or
storing the battery, the battery emits an unusual smell, feels hot, or appears
abnormal in any other way.
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STEPPII-55/56-LT HARDWARE DESCRIPTION VERSION 1.01
3 SAFETY STANDARDS
This GSM/GPS modem complies with all applicable RF safety standards.
The embedded GSM/GPRS/GPS modem meets the safety standards for RF receivers
and the standards and recommendations for the protection of public exposure to RF
electromagnetic energy established by government bodies and professional
organizations such as directives of the European Community Directorate General V
in matters of radio frequency electromagnetic energy.
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STEPPII-55/56-LT HARDWARE DESCRIPTION VERSION 1.01
4 TECHNICAL DATA
4.1 General s ecifications of terminal STEPPII-55/56-LT
Power supply:
Supply voltage from +10.8 V to +32.0 V (absolute
maximum ratings) suitable for direct connection to an
automotive +12V or +24V DC supply. Shoul be
proteced against over-voltage and over-current.
Internal battery:
C onsists of a rechargeable Lithium-Ion battery with
+4.2 VDC input charging circuit and a capacity of 850
Ah built-in in side the unit. Charging is conrtrolled
externally. Pin 14 on the 16-pin MOLEX connector
servers to start and stop charging of the battery.
D efault operating time is approx. 5 hours after full
charged.
Temperature:
N ormal operation (without connected battery): -0 °C
to +55 °C (see chapter 4.1.2 for further details)
Evaluation kit:
T he STEPPII-55/56-LT Eval-Board is designed to test
evaluate and make basis configuration to enable
remote monitoring/configuration of the FALCOM
STEPPII-55/56-LT. It provides a sample configuration for
application.
Physical characteristics:
S ize: 55.0 ± 0.15 mm x 80.0 ± 0.15 mm x 22.0 ± 0.15 mm
W eight: ca. 120 g
Au io:
2 x Microphone 2 x Speaker
Firmware upgra e:
O ver serial interface
Serial Interface Setting:
F ull duplex serial communication CMOS level
2 -wire (RxA and TxA) serial communication
B aud rate: 57600 bps on the serial port
8 data bits no parity 1 stop bit no hardware
Casing:
F ully shield
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STEPPII-55/56-LT HARDWARE DESCRIPTION VERSION 1.01
4.1.1 Power consum tion
Test conditions:
All measurements have been performed at Tamb= 25 °C VIN+ = 12 VDC and 24
VDC.
Average current at +12 V DC
GPS/GSM on
(Operating with firmware
1.6.2)
850 1800/1900 MHz GSM band
105 105 mA in idle mode (base station sends at -85 dBm)
197 153 mA in transmit mode at power level 7/3
219 178 mA in transmit mode at power level 5/0 (maximum)
GPS/GPRS on
(Operating with firmware
2. . )
To be defined mA
in receive mode at maximum power level 5 (3 x
downstream +2 x upstream using Coding Scheme 4
(CS-4))
Table 2: Power supply and current consumption at 12 V DC
Average current at +24 V DC
GPS/GSM on
(Operating with firmware
1.6.2)
850 1800/1900 MHz GSM band
75 75 mA in idle mode (base station sends at -85 dBm)
111 93 mA in transmit mode at power level 7/3
119 103 mA in transmit mode at power level 5/0 (maximum)
GPS/GPRS on
(Operating with firmware
2. . )
To be defined mA
in receive mode at maximum power level 5 (3 x
downstream +2 x upstream using Coding Scheme 4
(CS-4))
Table 3: Power supply and current consumption at 24 V DC.
4.1.2 O erating tem eratures
Parameter Min Typ Max Unit
Ambient temperature (according to GSM 11.10) 0 25 +55 °C
Charging temperature 0 25 +40 °C
Discharging temperature 0 25 +55 °C
Table 4: Operating temperature
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STEPPII-55/56-LT HARDWARE DESCRIPTION VERSION 1.01
4.2 Battery Technical Data
Electrical characteristics
Nominal voltage (V) 3.70
Typical capacity 20°C (mA/h) 850 mA/h @ 4.2 V
Operating con itions
Charging method Constant Current
/Constant Voltage
(CCCV)
Charging voltage 4.20V
Charging current 1C max
Charging low current C/100
Charging temperature range 0°C to + 40°C
Discharge current 1C max. continuous
Discharge temperature range 0°C to +55°C
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STEPPII-55/56-LT HARDWARE DESCRIPTION VERSION 1.01
4.3 Technical s ecifications of GSM/GPRS engine*
Frequency ban s:
T ri band: GSM 850 GSM 1800 GSM 1900
T ri band: EGSM 900 GSM 1800 GSM 1900
C ompliant to GSM Phase 2/2+
GSM class:
S mall MS
Transmit power:
C lass 4 (2 W) at GSM850 and GSM900
C lass 1 (1 W) at GSM1800 and GSM 1900
GPRS connectivity:
G PRS multi-slot class 10
G PRS mobile station class B
DATA:
GPRS ⇒
G PRS data downlink transfer: max. 85.6 kbps (see
table 3).
G PRS data uplink transfer: max. 42.8 kbps (see table
5).
C oding scheme: CS-1 CS-2 CS-3 and CS-4. TCP/IP
and PPP-stack.
STEPPII-55/56-LT supports two protocols PAP (Password
Authentication Protocol) and CHAP (Challenge
Handshake Authentication Protocol) commonly used
for PPP connections.
S upports of Packet Switched Broadcast Control
Channel (PBCCH) allows you to benefit from
enhanced GPRS performance when offered by the
network operators.
CSD ⇒
C SD transmission rates: 2.4 4.8 9.6 14.4 kbps non-
transparent V.110.
U nstructured Supplementary Services Data (USSD)
support.
WAP ⇒
W AP compliant.
SMS:
M T MO CB Text and PDU mode
S MS storage: SIM card plus 25 SMS locations in the
mobile equipment
T ransmission of SMS alternatively over CSD or GPRS.
Preferred mode can be user-defined.
SIM interface:
S upport SIM card: 3 V
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STEPPII-55/56-LT HARDWARE DESCRIPTION VERSION 1.01
External antenna:
C onnected via 50 Ohm antenna connector.
Au io features:
Speech codec modes:
H alf Rate (ETS 06.20)
F ull Rate (ETS 06.10)
E nhanced Full Rate (ETS 06.50/06.60/06.80)
A daptive Multi Rate (AMR)
Handsfree operation
E cho cancellation
N oise reduction
Phonebook management:
Supported phonebook types: SM FD LD MC RC ON
ME
Ringing tones:
O ffers a choice of 7 different ringing tones/melodies
easily selectable with AT command
Real time clock:
I mplemented
Timer function:
P rogrammable via SMS or $PSRF commands
Coding scheme 1 Timeslot 2 Timeslots 4 Timeslots
CS-1: 9.05 kbps 18.1 kbps 36.2 kbps
CS-2: 13.4 kbps 26.8 kbps 53.6 kbps
CS-3: 15.6 kbps 31.2 kbps 62.4 kbps
CS-4: 21.4 kbps 42.8 kbps 85.6 kbps
Table 5: Coding schemes and maximum net data rates over air interface
Please note that the values listed above are the maximum ratings which in practice
are influenced by a great variety of factors primarily for example traffic variations
and network coverage.
* Please note that not all features given above (in this chapter) are utilized in our
firmware.
4.3.1 Air interface of the STEPPII-55/56-LT GSM/GPRS art
Test conditions:
All measurements have been performed at Tamb= 25 °C VIN+ nom = 12 V.
Parameter Min Typ Max Unit
Frequency range
Uplink (MS → BTS)
Frequency range
Downlink (BTS → MS)
GSM 850 824 849 MHz
GSM 1800 1710 1785 MHz
GSM 1900 1850 1910 MHz
GSM 850 869 894 MHz
GSM 1800 1805 1880 MHz
GSM 1900 1930 1990 MHz
This confidential document is a property of FALCOM and may not be copied or circulated without previous permission.
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STEPPII-55/56-LT HARDWARE DESCRIPTION VERSION 1.01
RF power @ ARP with 50 Ω load GSM 850 31 33 35 dBm
GSM 1800 28 30 32 dBm
GSM 1900 28 30 32 dBm
GSM 850 124
GSM 1800 374
GSM 1900 299 dBm
Duplex spacing GSM 850 45 MHz
GSM 1800 95 MHz
GSM 1900 80 MHz
Carrier spacing 200 kHz
Multiplex, Duplex TDMA/FTDMA, FDD
Time slots per TDMA frame 8
Frame duration 4.615 ms
Time slot duration 577 µs
Modulation
Receiver input sensitivity @ ARP
BER Class II < 2.4 %
GMSK
GSM 850 -102 -107 dBm
GSM 1800 -102 -106 dBm
GSM 1900 -102 -105.5 dBm
Table 6: Air Interface
This confidential document is a property of FALCOM and may not be copied or circulated without previous permission.
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