This document is available at - http://www.falcom.de/
TANGO55/i & 56/i
USER'S GUIDE
Version 1.05, 12/01/2007
TANGO55/i & TANGO56/i User's Manual Version 1.05
Table Of Contents
0 INTRODUCTION .................................................................................................................. 6
0.1 THE DIFFERENCES BETWEEN TANGO55/I & TANGO56/I MODEMS ................................................. 6
0.2 USED ABBREVIATIONS ............................................................................................................... 8
0.3 RELATED DOCUMENTS ............................................................................................................ 10
1 SECURITY ......................................................................................................................... 11
1.1 GENERAL ............................................................................................................................ 11
1.2 EXPOSURE TO RF ENERGY ..................................................................................................... 11
1.3 EFFICIENT MODEM OPERATION .................................................................................................. 11
1.4 ANTENNA CARE AND REPLACEMENT ............................................................................................ 11
1.5 DRIVING .............................................................................................................................. 12
1.6 ELECTRONIC DEVICES ............................................................................................................. 12
1.7 VEHICLE ELECTRONIC EQUIPMENT .............................................................................................. 12
1.8 MEDICAL ELECTRONIC EQUIPMENT .............................................................................................. 12
1.9 AIRCRAFT ............................................................................................................................ 12
1.10 CHILDREN ......................................................................................................................... 12
1.11 BLASTING AREAS ................................................................................................................. 13
1.12 POTENTIALLY EXPLOSIVE ATMOSPHERES .................................................................................... 13
1.13 NON-IONISING RADIATION ..................................................................................................... 13
1.14 SAFETY STANDARDS ............................................................................................................. 14
2 TECHNICAL DATA ........................................................................................................... 15
2.1 TECHNICAL SPECIFICATIONS OF GSM/GPRS ENGINE ................................................................... 15
2.2 POWER CONSUMPTION FOR TANGO55, ONLY ............................................................................ 18
2.3 OPERATING TEMPERATURES ..................................................................................................... 18
2.4 AIR INTERFACE OF THE TANGO55 GSM/GPRS ENGINE, ONLY .................................................. 18
2.5 AIR INTERFACE OF THE TANGO56 GSM/GPRS ENGINE, ONLY .................................................. 19
2.6 DETERMINING THE EXTERNAL EQUIPMENT TYPE ........................................................................... 20
3 GSM/GPRS APPLICATION INTERFACE ......................................................................... 21
3.1 DESCRIPTION OF OPERATING MODES .......................................................................................... 21
3.2 NORMAL MODE OPERATION ..................................................................................................... 21
3.2.1 GSM/GPRS SLEEP ...................................................................................................... 21
3.2.2 GSM IDLE .................................................................................................................... 21
3.2.3 GSM TALK ................................................................................................................... 21
3.2.4 GPRS IDLE .................................................................................................................. 21
3.2.5 GPRS DATA ................................................................................................................. 21
3.2.6 POWER DOWN ................................................................................................................... 22
3.2.7 ALARM MODE .................................................................................................................... 22
4 HARDWARE INTERFACES .............................................................................................. 23
4.1 INTERFACES ON THE TANGO55/I & TANGO56/I ..................................................................... 23
4.1.1 INTERFACE A (4-PIN CONNECTOR, POWER SUPPLY) ..................................................................... 23
4.1.2 INTERFACE B (9-PIN D-SUB CONNECTOR) .............................................................................. 24
4.1.3 INTERFACE C (8-PIN RJ45 CONNECTOR) ................................................................................ 24
4.1.4 INTERFACE D (ANTENNA INTERFACE) ...................................................................................... 25
4.1.5 INTERFACE E (SIM INTERFACE) ............................................................................................ 25
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4.1.6 INTERFACE F (OPTICAL INDICATOR INTERFACE) .......................................................................... 26
4.2 FUNCTIONAL DESCRIPTION ....................................................................................................... 26
4.2.1 IGNITION LINE .................................................................................................................... 27
4.2.2 SERIAL HANDLING ............................................................................................................... 27
4.2.3 RESET CONFIGURATION ........................................................................................................ 28
4.2.4 FIRMWARE UPDATE ............................................................................................................. 28
4.2.5 TURN OFF GSM/GPRS ENGINE OF THE TANGO55/56 MODEMS USING AT COMMAND ..................28
4.2.6 MAXIMUM NUMBER OF TURN-ON/TURN-OFF CYCLES .................................................................... 29
4.2.7 AUTOMATIC GPRS MULTISLOT CLASS CHANGE ....................................................................... 29
5 GENERAL GUIDELINES FOR THE USE OF THE TANGO55/56 .................................... 30
5.1 GETTING STARTED ................................................................................................................. 30
5.2 HARDWARE & SOFTWARE REQUIREMENTS .................................................................................... 30
5.2.1 MINIMUM HARDWARE INTERFACE TO GET STARTED ....................................................................... 30
5.2.1.1 Connecting the external antenna (SMB type) ............................................................ 30
5.2.1.2 Installing the SIM card ............................................................................................... 31
5.2.1.3 Mounting the terminal ................................................................................................ 32
5.2.1.4 Mounting the cradle and placing the terminal ............................................................ 32
5.2.1.5 Connecting the data cable ......................................................................................... 33
5.2.1.6 Connecting the DC power supply .............................................................................. 33
5.2.2 TERMINAL EMULATOR SETUP .................................................................................................. 34
5.2.2.1 Checking the Modem (using Microsoft Windows™ Hyper Terminal as example) .... 34
5.2.3 GETTING STARTED TO GPRS NETWORK ................................................................................. 37
5.3 BASIC OPERATION ................................................................................................................. 37
5.3.1 TROUBLESHOOTING ............................................................................................................. 38
6 HOUSING .......................................................................................................................... 39
6.1 HOUSING OF CRADLE ............................................................................................................. 40
7 APPENDIX ......................................................................................................................... 41
7.1 RECOMMENDATIONS FOR POWER SUPPLY ..................................................................................... 41
7.1.1 EXTERNAL CABLE FOR POWER SUPPLY ..................................................................................... 41
7.2 POSSIBLE EXTERNAL ANTENNA .................................................................................................. 42
7.3 POSSIBLE EXTERNAL HEADSET .................................................................................................. 42
8 HOW TO UPDATE THE NEW FIRMWARE INTO THE TANGO55/56 MODEMS ............. 43
9 RF EXPOSURES ............................................................................................................... 46
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TANGO55/i & TANGO56/i User's Manual Version 1.05
Version history:
Version number Author Changes
1.00 F. Beqiri Initial version
1.01 F. Beqiri The GSM LED description in chapter 4.2 updated.
Chapter ” Possible external devices” removed.
1.02 F. Beqiri In chapter 9, the paragraphs "RF Exposure FCC:..." and "Health and Safety
Information FCC:..." removed.
1.03 F. Beqiri Table 5 (chapter 2.5, page 19 ) – The RF Output Power updated with new values.
1.04 F. Beqiri Added antenna specifications – see chapter 7.2.
Throughout this document some figures are updated with an AN-001-M antenna.
1.05 F Beqiri Completed chapter 4.2.1, Ignition line behaviours.
Updated power consumption – see table 3 in chapter 2.2.
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TANGO55/i & TANGO56/i User's Manual Version 1.05
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 document 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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TANGO55/i & TANGO56/i User's Manual Version 1.05
0 INTRODUCTION
TANGO55/i and TANGO56/i are designed for use on any GSM network in the world.
TANGO55/i and TANGO56/i are Tri-Band GSM/GPRS engines that work on three
frequencies GSM 900 MHz, DCS 1800 MHz and PCS 1900 MHz or 850 MHz, DCS 1800
MHz, PCS 1900 MHz, respectively. These full type approved integrated modems
constitute a self contained, fully integrated implementation of the GSM/GPRS.
TANGO55/i and TANGO56/i feature GPRS class B, class 10 (making download at
speeds up to 85 kbps) and support the GPRS coding schemes CS-1, CS-2, CS-3 and
CS-4.
TANGO55/i and TANGO56/i modems incorporate all you need to create highperformance GSM/GPRS solutions; base band processor, power supply ASIC,
complete radio frequency circuit including a power amplifier, internal and external
SIM interfaces and an antenna interface as well.
The physical interface to the cellular application is made through a RS-232
connector. It consists of 9-pin RS232 interface, required for controlling the unit and
transferring data. They can be directly connected via RS232 interfaces to the serial
port of a desktop or notebook computer. Interfaces for audio signals and applying
power supply are also available.
The external dual band or triple band antenna can directly be connected to the
integrated 50 Ω connector on the modem.
The TANGO55/56 are mobile stations for transmission of voice, data calls and FAX as
well as short messages (SMS - Short Message Service) in GSM Network.
To control the GSM module there is an advanced set of AT commands according to
GSM ETSI (European Telecommunications Standards Institute) 07.07 and 07.05
implemented.
About GPRS:
GPRS is standard for General Packet Radio Service that is an add-on to the GSM
(Global System for Mobile Communications) cellular network - a type of network
used to provide cellular phone service.
In regions where GPRS is not available, users can still access their important
information with GSM 14.4 kbps data connections.
Users are advised to quickly proceed to the “Security” chapter and read the hints
carefully.
0.1 The differences between TANGO55/i & TANGO56/i
modems
TANGO55 is a Tri-band GSM/GPRS device that operates on three frequencies
GSM 900 MHz, DCS 1800 MHz and PCS 1900 MHz, and is available to use
in the European and Asian Networks.
TANGO55i is also a Tri-band GSM/GPRS device that operates on three frequencies
GSM 900 MHz, DCS 1800 MHz and PCS 1900 MHz, and is available to use
in the European and Asia Networks. The TANGO55i modem provides a
specific software and hardware (internal TCP/IP stack software with
hardware extension) which has been internally implemented for using
the embedded TCP/IP stack software.
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The integration of TCP/IP stack with hardware extension (a TCP/IPmodule added) into the equipment converts it to a stand-alone client
that can be connected to the internet via GPRS network. The modem
can also send and receive data by GSM (set into Command-Mode)
and GPRS network using TCP/IP stack. It supports SMS, DATA and FAX
calls. The TANGO55i modem can be easily controlled by using TCP and
AT commands. The “TCP Command Set” manual is also issued as
separate document and is available on the distributed CD for the
TANGO55i’s users.
TANGO56 is a Tri-band GSM/GPRS device that operates on three frequencies
GSM 900 MHz, DCS 1800 MHz and PCS 1900 MHz, and is available to use
in the European and Asia Networks.
TANGO56i is also a Tri-band GSM/GPRS device that operates on three frequencies
GSM 850 MHz, DCS 1800 MHz and PCS 1900 MHz, and is available to use
in the American Networks. However, the TANGO56i modem contains
1800 MHz GSM functions that is not operational (not allowed for use) in
U.S. Territories. This filing is only applicable for 850MHz GSM/1900 MHz
PCS operations, whereby only these frequencies (850MHz GSM/1900
MHz PCS) are possible to be used in U.S. Territories. The TANGO56i
modem provides a specific soft- and hardware (internal TCP/IP stack
software with hardware extension) which has been internally
implemented for using the embedded TCP/IP stack software.
The integration of TCP/IP stack with hardware extension (a
TCP/IP-module added) into the equipment converts it to a stand-alone
client that can be connected to the internet through any GSM
850/1800/1900 network. The modem can also send and receive data
by GSM (set into the Command-Mode) and GPRS network using TCP/IP
stack. It supports SMS, DATA and FAX calls. The TANGO56i modem can
be easily controlled by using TCP and AT commands. The “TCP
Command Set” manual is also issued as separate document and is
available on the distributed CD for the TANGO56i’s users.
Regarding the electrical interfaces, mechanical specification (dimension, form etc.)
and electrical specification are the same to all modems.
Please note that, according to your requirement you can choose the desired
device.
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TANGO55/i & TANGO56/i User's Manual Version 1.05
0.2 Used abbreviations
Abbreviation Description
AFC Automatic Frequency Control
AGC Automatic Gain Control
AMP Advanced Power Management
ANSI American National Standards Institute
ARFCN Absolute Radio Frequency Channel Number
ARP Antenna Reference Point
B2B Board-to-board connector
BER Bit Error Rate
BTS Base Transceiver Station
CB or CBM Cell Broadcast Message
CE Conformité Européene (European Conformity)
CHAP Challenge Handshake Authentication Protocol
CPU Central Processing Unit
CS Coding Scheme
CSD Circuit Switched Data
CTS Clear to Send
DAC Digital-to-Analog Converter
DAI Digital Audio Interface
dBW Decibel per Watt
dBm0 Digital level, 3.14 dBm0 corresponds to full scale, see ITU G.711, A-law
DCE Data Communication Equipment (typically modems, e.g. XF55-AVL GSM engine)
DCS 1800 Digital Cellular System, also referred to as PCN
DGPS Differential GPS
DOP Dilution of Precision
DRX Discontinuous Reception
DSP Digital Signal Processor
DSR Data Set Ready
DTE Data Terminal Equipment (typically computer, terminal, printer or, for example, GSM application)
DTR Data Terminal Ready
DTX Discontinuous Transmission
EFR Enhanced Full Rate
EGSM Enhanced GSM
EMC Electromagnetic Compatibility
ESD Electrostatic Discharge
ETS European Telecommunication Standard
FCC Federal Communications Commission (U.S.)
FDMA Frequency Division Multiple Access
FR Full Rate
GGA GPS Fixed Data
GMSK Gaussian Minimum Shift Keying
GPRS General Packet Radio Service
GPS Global Positioning System
GSM Global Standard for Mobile Communications
HiZ High Impedance
HR Half Rate
I/O Input/Output
IC Integrated Circuit
IMEI International Mobile Equipment Identity
ISO International Standards Organization
ITU International Telecommunications Union
kbps kbits per second
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TANGO55/i & TANGO56/i User's Manual Version 1.05
Abbreviation Description
MO Mobile Originated
MS Mobile Station (GSM engine), also referred to as TE
MSISDN Mobile Station International ISDN number
MSK Minimum Shift Key
MT Mobile Terminated
NTC Negative Temperature Coefficient
OEM Original Equipment Manufacturer
PA Power Amplifier
PAP Password Authentication Protocol
PBCCH Packet Switched Broadcast Control Channel
PCB Printed Circuit Board
PCL Power Control Level
PCM Pulse Code Modulation
PCN Personal Communications Network, also referred to as DCS 1800
PCS Personal Communication System, also referred to as GSM 1900
PDU Protocol Data Unit
PLL Phase Locked Loop
PPP Point-to-point protocol
PRN Pseudo-Random Noise Number. The identity of GPS satellites
PSU Power Supply Unit
R&TTE Radio and Telecommunication Terminal Equipment
RAM Random Access Memory
RF Radio Frequency
RMS Root Mean Square (value)
ROM Read-only Memory
RP Receive Protocol
RTC Real Time Clock
RTCM Radio Technical Commission for Maritime Services
Rx Receive Direction
SA Selective Availability
SAR Specific Absorption Rate
SELV Safety Extra Low Voltage
SIM Subscriber Identification Module
SMS Short Message Service
SRAM Static Random Access Memory
TA Terminal adapter (e.g. GSM engine)
TDMA Time Division Multiple Access
TE Terminal Equipment, also referred to as DTE
Tx Transmit Direction
UART Universal asynchronous receiver-transmitter
URC Unsolicited Result Code
USSD Unstructured Supplementary Service Data
VSWR Voltage Standing Wave Ratio
WAAS Wide Area Augmentation System
FD SIM fix dialing phonebook
LD SIM last dialing phonebook (list of numbers most recently dialed)
MC Mobile Equipment list of unanswered MT calls (missed calls)
ME Mobile Equipment phonebook
ON Own numbers (MSISDNs) stored on SIM or ME
RC Mobile Equipment list of received calls
SM SIM phonebook
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0.3 Related documents
1. TANGO55/56 AT Command Set
2. gprs_startup_user_guide
3. TANGO55i/56i TCP Command Set
4. ETSI GSM 07.05: “Use of Data Terminal Equipment-Data Circuit
terminating Equipment interface for Short Message Service and Cell
Broadcast Service”
5. ETSI GSM 07.07 “AT command set for GSM Mobile Equipment”
6. ITU-T V.25ter “Serial asynchronous automatic dialling and control”
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TANGO55/i & TANGO56/i User's Manual Version 1.05
1 SECURITY
IMPORTANT FOR THE EFFICIENT AND SAFE OPERATION OF YOUR GSM/GPRS MODEM
READ THIS INFORMATION BEFORE USE !
Your GSM/GPRS modem 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.
1.1 General
Your modem utilities the GSM standard for cellular technology. GSM 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.
1.2 Exposure to RF energy
There has been some public concern about possible health effects of using GSM or
GSM/GPRS 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
minimise 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 below guidelines.
1.3 Efficient modem operation
For Your modem to operate at the lowest power level, consistent with satisfactory
call quality:
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.
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.
1.4 Antenna care and replacement
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.
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TANGO55/i & TANGO56/i User's Manual Version 1.05
Use only the supplied or approved antenna. Unauthorised antennas, modifications
or attachments could damage the modem and may contravene local RF emission
regulations or invalidate type approval.
1.5 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: give
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 fulfil road-safety instructions of the current law!
1.6 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.
1.7 Vehicle electronic equipment
Check your vehicle manufacturer’s representative to determine if any on board
electronic equipment is adequately shielded from RF energy.
1.8 Medical electronic equipment
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 modem 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.
1.9 Aircraft
Turn Your modem OFF before boarding any aircraft.
Use it on the ground only with crew permission.
Do not use 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.
1.10Children
Do not allow children to play with Your modem. 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.
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TANGO55/i & TANGO56/i User's Manual Version 1.05
1.11Blasting 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.
1.12Potentially explosive atmospheres
Turn Your modem 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.
1.13Non-Ionising 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 be 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 50Ohm
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.
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1.14Safety standards
THIS CELLULAR MODEM COMPLIES WITH ALL APPLICABLE RF SAFETY STANDARDS.
This cellular modem meets the standards and recommendations for the protection
of public exposure to RF electromagnetic energy established by governmental
bodies and other qualified organisations, such as the following :
Directives of the European Community, Directorate General V in Matters of Radio
Frequency Electromagnetic Energy.
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2 TECHNICAL DATA
2.1 Technical specifications of GSM/GPRS engine
Power supply:
S upply voltage 10.8 ... 31.2 V DC ±5 % (see
chapter 2.2 for further details)
Power saving (GSM):
Minimizes power consumption in SLEEP mode to
16 mA
Temperature range:
N ormal operation: - 20 °C to + 55 °C (see
chapter 2.3 for further details)
Physical characteristics:
S ize: 115.0 ± 0.15 mm x 52.0 ± 0.15 mm x 26.6 ±
0.15 mm (for more details see chapter 6
“Housing”)
W eight: 82.6 ± 2 g (with SMB connector)
88.0 g (with FME connector)
Dimension of cradle:
S ize: 119.4mm x 66.7mm x 31.8mm(L x B x H)
W eight: 21 gr
through 2 screw holes on the cradle
Mounting:
T hrough 2 screw holes on the cradle
Frequency bands:
T ri-band (TANGO55/i): EGSM 900, GSM 1800,
GSM 1900
T ri-band (TANGO56/i): GSM 850, GSM 1800, GSM
1900
C ompliant to GSM Phase 2/2+
GSM class:
S mall MS
Transmit power:
C lass 4 (2 W) at EGSM900 (TANGO55/i) GSM 850
(TANGO56/i)
C lass 1 (1 W) at GSM 1800 and GSM 1900
GPRS connectivity:
G PRS multi-slot class 10
G PRS mobile station class B
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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 3).
C oding scheme: CS-1, CS-2, CS-3 and CS-4.
T ANGO55/56 supports two protocols PAP
(Password Authentication Protocol) and CHAP
(Challenge Handshake Authentication Protocol)
commonly used for PPP connections.
S upport 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.
MMS:
M MS compliant
FAX:
G roup 3: class 1, class 2
SIM interface:
S upported SIM card: 3 V
I ntegrated SIM card slot (for small SIM card, only)
Casing:
F ully shield (Chromium-plate ABS)
Temperature control and auto switch-off:
Constant temperature control prevents damage
to TANGO55/i and TANGO56/i when the
specified temperature is exceeded. When an
emergency call is in progress the automatic
temperature shutdown functionality is
deactivated. (see chapter 2.3 for further details)
External antenna:
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TANGO55/i & TANGO56/i User's Manual Version 1.05
S ingle antenna interface SMB or FME antenna
connector.
Audio interfaces:
A n analogue audio interface
Audio features:
RJ45 serial link (microphone and speaker)
Speech code 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
One serial interface (RS-232C):
2.65V level, bi-directional bus for AT commands
and data
S erial link↔full-featured 8-wire serial interface.
Supports RTS0/CTS0 hardware handshake and
software XON/XOFF flow control. Multiplex ability
according to GSM 07.10 Multiplexer Protocol.
B aud rate: 300 bps ... 230 kbps on ASC0
A utobauding detects 1200, 2400, 4800, 9600,
19200, 38400, 57600, 115200, 230400 bps
Phonebook management:
S upported 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 AT command
Support of TTY/CTM:
T o benefit from TTY communication via GSM,
CTM equipment can be connected to the audio
interface.
Software for TANGO55i/56i, only:
T CP/IP stack (Internet protocol stack which
handles the Internet's link, network, transport and
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application layers). The embedded software
interface that runs on TANGO55i/56i modems for
establishing internet connectivity using IP
commands. TCP/IP software description is also
available, see related documents [0.3].
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 2: 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.
2.2 Power consumption for TANGO55, only
POWER CONSUMPTION
Min Typ. Max Unit Description
GSM/GPRS engine
Supply voltage 10.8 12 31.2 V
Voltage must stay within the min/max values, including
voltage drop, ripple and spikes.
Average supply current
GSM
16 mA SLEEP mode
MODE BAND (TANGO55/i, only)
32
32
mA IDLE mode
EGSM 900
GSM 1800/1900
146
115
mA TALK mode
EGSM 900
*)
GSM 1800/1900
**)
GPRS
32
32
mA IDLE GPRS
EGSM 900
GSM 1800/1900
153
113
mA
DATA mode GPRS,
(4 Rx, 1 Tx)
EGSM 900
*)
GSM 1800/1900
**)
227
169
mA
DATA mode GPRS,
(3 Rx, 2 Tx)
EGSM 900
*)
GSM 1800/1900
**)
Table 3: Power supply
*) Power Control Level (PCL 5).
**) Power Control Level (PCL 0).
2.3 Operating temperatures
Parameter Min Typ. Max Unit
Ambient temperature (according to GSM 11.10) -20 25 50 °C
Restricted operation *) -25 to -20 55 to 70 °C
Automatic shutdown
TANGO55/i and TANGO56/i board temperature -29 °C >70 °C
°C
Table 4: Operating temperature
*) TANGO55/i and TANGO56/i work, but deviations from the GSM specification may occur.
2.4 Air interface of the TANGO55 GSM/GPRS engine, only
Test conditions:
All measurements have been performed at T
amb
= 25 °C, V
VIN
typ. = 12 V DC.
Parameter Min Typ. Max Unit
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Frequency range
Uplink (MS → BTS)
GSM 900 880 915 MHz
GSM 1800 1710 1785 MHz
GSM 1900 1850 1910 MHz
Frequency range
Downlink (BTS → MS)
GSM 900 925 960 MHz
GSM 1800 1805 1880 MHz
GSM 1900 1930 1990 MHz
RF power @ ARP with 50 Ω load
GSM 900 31 33 35 dBm
GSM 1800 28 30 32 dBm
GSM 1900 28 30 32 dBm
Number of carriers
GSM 900 174
GSM 1800 374
GSM 1900 299 dBm
Duplex spacing GSM 900 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 900 -102 -107 dBm
GSM 1800 -102 -106 dBm
GSM 1900 -102 -105.5 dBm
Table 5: Air Interface
2.5 Air interface of the TANGO56 GSM/GPRS engine, only
Test conditions:
All measurements have been performed at T
amb
= 25 °C, V
VIN
typ. = 12 V DC.
Parameter Min Typ. Max Unit
Frequency range
Uplink (MS → BTS)
GSM 850 824 849 MHz
GSM 1800 1710 1785 MHz
GSM 1900 1850 1910 MHz
Frequency range
Downlink (BTS → MS)
GSM 850 869 894 MHz
GSM 1800 1805 1880 MHz
GSM 1900 1930 1990 MHz
RF power @ ARP with 50 Ω load
GSM 850 31.51 31.82 dBm
GSM 1800 - - - -
PCS 1900 27.43 - 28.16 dBm
Number of carriers
GSM 850 124
GSM 1800 374
PCS 1900 299 dBm
Duplex spacing GSM 850 45 MHz
GSM 1800 95 MHz
PCS 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
PCS 1900 -102 -105.5 dBm
Table 6: Air Interface
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2.6 Determining the External Equipment Type
Before you connect the DB9 serial port connectors on the aforementioned terminals
(DCE units) to external equipment, you need to determine if the external hardware
serial ports are configured as DTE or DCE.
The terms DTE (Data Terminal Equipment) and DCE (Data Communications
Equipment) are typically used to describe serial ports on devices. Computers (PCs)
generally use DTE connectors and communication devices such as modems and
DSU/CSU devices generally use DCE connectors. As a general rule, DTE ports
connect to DCE ports via straight through pinned cables. In other words, a DTE port
never connects directly to another DTE port. Similarly, a DCE port never connects
directly to another DCE port. The signalling definitions were written from the
perspective of the DTE device; therefore, a Receive Data signal becomes an input
to DTE but an output from DCE.
TANGO55/i and TANGO56/i are designed for use as a DCE unit. Based on the
aforementioned conventions for DCE-DTE connections it communicates with the
customer application (DTE) using the following signals:
TANGO55/i and TANGO56/i
Terminal (DCE)
to Application (DTE)
TxD ◄----------------------- TXD
RxD -----------------------► RXD
RTS ◄----------------------- RTS
CTS -----------------------► CTS
DTR ◄----------------------- DTR
DSR -----------------------► DSR
DCD -----------------------► DCD
RING -----------------------► RING
Table 7: The signaling definitions between DTE and DCE.
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3 GSM/GPRS APPLICATION INTERFACE
3.1 Description of operating modes
The chapter below briefly summarizes the various operating modes referred to the
following chapters.
Definition of the GPRS class B mode of operation:
The definition of GPRS class B mode is, that the MS can be attached to both
GPRS and other GSM services, but the MS can only operate one set of
services at a time. Class B enables making or receiving a voice call, or
sending/receiving a SMS during a GPRS connection. During voice calls or
SMS, the GPRS services will be suspended and then resumed automatically
after the call or SMS session has been ended.
3.2 Normal mode operation
3.2.1 GSM/GPRS SLEEP
Various power save modes set with AT+CFUN command. Software is active to
minimum extent. If the module was registered to the GSM network in IDLE mode, it is
registered and paging with the BTS in SLEEP mode, too. Power saving can be chosen
at different levels: The NON-CYCLIC SLEEP mode (AT+CFUN=0) disables the AT
interface. The CYCLIC SLEEP modes AT+CFUN=5,6,7,8 and 9 alternatively activate
and deactivate the AT interfaces to allow permanent access to all AT commands.
3.2.2 GSM IDLE
Software is active. Once registered to the GSM network, paging with BTS is carried
out. The module is ready to send and receive.
3.2.3 GSM TALK
Connection between two subscribers is in progress. Power consumption depends on
network coverage individual settings, such as DTX off/on, FR/EFR/HR, hopping
sequences, antenna.
3.2.4 GPRS IDLE
Module is ready for GPRS data transfer, but no data is currently sent or received.
Power consumption depends on network settings and GPRS configuration (e.g.
multislot settings).
3.2.5 GPRS DATA
GPRS data transfer in progress. Power consumption depends on network settings
(e.g. power control level), uplink/downlink data rates and GPRS configuration (e.g.
used multislot settings).
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3.2.6 Power down
Normal shutdown after sending the AT^SMSO command. The Power Supply ASIC
(PSU-ASIC) disconnects the supply voltage from the base band part of the circuit.
Only a voltage regulator in the PSU-ASIC is active for powering the RTC. Software is
not active. The serial interfaces are not accessible. Operating voltage remains
applied.
3.2.7 Alarm mode
Alarm mode restricted operation launched by RTC alert function while the module is
in POWER DOWN mode. Module will not be registered to GSM network. Limited
number of AT commands is accessible.
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4 HARDWARE INTERFACES
4.1 Interfaces on the TANGO55/i & TANGO56/i
Interface specifications
Interface A 4-pin Micro-Fit™ 3.0 Molex
Part number: 43045-0406 (Female)
Interface B Standard RS232 serial interface
Interface C Audio 8-pin RJ45, RS232 (Rx, Tx) serial interface
Interface D GSM antenna interface with SMB or FME antenna connector.
Interface E SIM card reader for small SIM cards (3V)
Interface F LED’s for status indication
Table 8: Interface specifications of the modems
Figure 1: view of modem interfaces.
4.1.1 Interface A (4-pin connector, power supply)
Figure 2: Pin out of 4-pin power supply connector (interface A)
Power input: 10,8....31,2 V DC
Pin number Name Wire-Colour Functions
1 GND Brown DC power negative input
2 Mute Green Do not connect
3 IGN Yellow Ignition (connected to positive DC power)
4 POWER (+Vin) White DC power positive input
Table 9: Description of modem power connector
A cable, included in the package shall be used for power supply connection.
For more details see Appendix chapters 7.1 and 7.1.1.
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4.1.2 Interface B (9-pin D-SUB connector)
Interface B has the highest priority connection to control the TANGO55/56 modem.s
This one has a standard D-SUB-male serial connector.
RS232 9 pin D-Sub to DIN 41652
+/-12V RX, TX, RTS, CTS, DTR, DSR, DCD, RI
300...115200 Baud rates for serial link (2400...19200 with auto-bauding)
Interface B (DB9 connector) has the following layout.
Figure 3: RS232 pin-out (interface B)
Pin Description Direction
1 DCD ↔ Data Carrier Detect OUT
2 RxD ↔ Received Data OUT
3 TxD ↔ Transmitted Data IN
4 DTR ↔ Data Terminal Ready IN
5 GND ↔ Signal Ground 6 DSR ↔ Data Set Ready OUT
7 RTS ↔ Request To Send IN
8 CTS ↔ Clear To Send OUT
9 RI ↔ Ring Indicator OUT
Table 10: Pin assignment of the standard RS232 connector
4.1.3 Interface C (8-pin RJ45 connector)
The TANGO55/56 modems provide this interface (RJ45) for serial and audio
connection.
You can use a RJ45 serial cable to connect the modem’s RJ45 connector (Interface
C) to external controller/computer (without HW handshake). If TANGO55/56
modems have been connected through interface B, interface C is automatically
deactivated (Rx, Tx). In this case, only 4 pins are available (MIC[+,-] and SPK[+,-]). So
a headset can be connected (see Appendix chapter 7.3 headset’s characteristic).
This interface supports also a connection to an external device such as active
headset.
Figure 4: Audio interface pin-out (interface C)
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Pin Description Direction
1 Power output 10V ± 5% 150mA OUT
2 TxD ↔ Transmitted Data IN
3 RxD ↔ Received Data OUT
4 Ground 5 SPK+ OUT
6 SPK- OUT
7 MIC+ IN
8 MIC- IN
Table 11: Pin assignment of RJ45
4.1.4 Interface D (antenna interface)
As far as the antenna interface is concerned, there are two TANGO55i versions. The
specifications and functions of the modems are the same. The difference between
both equipments can be recognised by looking at the GSM antenna on the left side
of the modems: the first one provides an antenna with SMB connector interface
(Figure 5.a); the second one provides an antenna with FME connector interface
(Figure 5.b). The length of antenna cable integrated on the TANGO55i is 23.3 cm.
Figure 5.a: TANGO55i/56i modem with SMB antenna
connector
Figure 5.b: TANGO55i modem with FME antenna
connector
4.1.5 Interface E (SIM interface)
The SIM interface controls a 3V SIM Card. This interface is fully compliant with GSM
11.11 recommendations concerning SIM functions.
Figure 6: SIM interface (interface E)
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TANGO55/i & TANGO56/i User's Manual Version 1.05
4.1.6 Interface F (Optical indicator interface)
The actual state of the TANGO55/i and TANGO56/i is displayed by two LED’s on
interface F of the unit (for more details see chapter 4.2 Functional description).
Figure 7: Status indicator of modem
4.2 Functional description
The GSM/GPRS modem TANGO55/i and TANGO56/i are mobile stations for the
transmission of voice, data and fax calls as well as SMS in GSM/GPRS networks.
The GSM/GPRS modems TANGO55/i and TANGO56/i consist of the following
components:
• GSM/GPRS transceiver
• Power supply unit
• Serial link (V.24) for data transmission and control
• GPRS Class B, Class 2 or Class 10.
If the GSM/GPRS modem is registered in the network, it acts just like a regular
fax/data modem. To control the GSM modem there is an advanced set of ATcommands according to GSM ETSI 07.07 and 07.05 implemented. The two LED’s on
the top of Interface C are showing the state of TANGO55/i and TANGO56/i. The
yellow LED signals the actual connection of the modem (interface B or C) and the
green LED signals power connection, GSM/GPRS network, a “RESET” function and
“SOFT-ON ” procedure.
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Page 26 of 46
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The actual state of modems is displayed by two LED’s at the connector on the top of
interface C of the unit.
Green LED (GSM)
Off Modem is off or run in SLEEP mode
600 ms On / 600 ms Off
No SIM card inserted or no PIN entered, or network search
in progress, or ongoing user authentication, or network
login in progress.
75 ms On / 3 s Off
Logged to network (monitoring control channels and user
interactions).
No call in progress.
75 ms On / 75 ms Off/
75 ms On / 3 ms Off
One or more GPRS contexts activated.
Flashing
Flashing Indicates GPRS data transfer: When a GPRS
transfer is in progress, the LED goes on within 1 second
after data packets were exchanged.
Flash duration is approximately 0.5 s.
On
On Depending on type of call:
Voice call: Connected to remote party.
Data call: Connected to remote party or exchange of
parameters while setting up or disconnecting a call.
Yellow LED
Off
Power off or interface C in use.
On
Power on, interface B in use or both interfaces (B & C) are
not connected.
4.2.1 Ignition line
The Ignition Line on Interface A uses an internal processor to control the timing of the
“TURN-ON” procedure of the internal GSM module.
The modem's power ON/OFF is controlled by the IGN sense line. When this line is
pulled high (10.8 to 31.2 Volt), the modem will power on. After the modem is
powered on, the IGN line can be pulled low. The modem will go sleep when this line
is pulled low and it receives AT+CFUN=n command via serial line, where
n=0,5,6,7,8,9. The modem will shut down when this line is pulled low and it receives
AT^SMSO command via serial line. See also AT Command description.
Following SLEEP modes are possible (when the modem is powered on):
When IGN state is Low, SLEEP modes are applicable, but in error condition no
automatical reset will be performed.
When IGN state is High, in error condition the modem resets automatically, but
SLEEP modes are not applicable.
4.2.2 Serial handling
The GSM/GPRS modem TANGO55/56 allows control of the GSM/GPRS modem over
the interface B or Interface C. The interface B is a implementation of a serial
interface corresponding to EIA-RS232-C.
See table below for details:
CCITT V24 Pin Description Direction
102 5 Signal Ground (GND)
103 3 Transmitted Data (TxD).
The DTE uses the TxD line to send data to the interface for
transmission over the Modem.
IN
104 2 Received Data (RxD).
The interface uses the RxD to send data received from the
Modem to the DTE.
OUT
105 7 Request To Send (RTS) IN
106 8 Clear To Send (CTS) OUT
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107 6 Data Set Ready (DSR) OUT
108 4 Data Terminal Ready (DTR) IN
109 1 Data Carrier Detect (DCD) OUT
125 9 Ring Indicator (RI) OUT
Table 12: R232 9-pin description
Both interface B and C are not independent usable. The interface B has the highest
priority. If you don’t want to use the interface B you must deactivate the signals RTS
(or remove connection). With the interface C you have the audio and control
functionality on one interface.
See table for connections:
Pin Description Direction
1 Power output 10V ± 5% 150mA OUT
2 Received Data (RxD) IN
3 Transmitted Data (TxD) OUT
4 Ground
5 SPK+ OUT
6 SPK- OUT
7 MIC+ IN
8 MIC- IN
Table 13: Pin description fo RJ45
4.2.3 Reset configuration
In case of malfunction, to RESET manually the GSM/GPRS modem, please use the
following way:
a) Operating voltage remains applied, the Ignition line of the modem
remains connected to the operating voltage or any other external
power source (10,8V ... 31,2V).
b) Then, send for at least 100ms a LOW signal level to the Transmit Data
[TxD] pin of the serial interface B or C (means: send a “BREAK” signal to
the used Transmit Data [TxD] line from a terminal software). The “BREAK”
signal forces the modem to perform a reset by driving the TxD pin of
modem to the ground.
c) Once the system detects an incoming signal through TxD pin (e.g. type
AT <enter> on the terminal screen) the modem set itself into the
command mode.
If the GSM software is still running, while the user feels the need to reset the modem,
AT+CFUN=1,1 could be used. This will de-register the modem from the network and
bring it into the state before the PIN has been entered.
4.2.4 Firmware update
The download procedure is documented in chapter 8.
4.2.5 Turn off GSM/GPRS engine of the TANGO55/56 modems using AT
command
The best and safest approach to powering down the GSM/GPRS engine is to issue
the AT^SMSO command, after the Ignition line is pulled low. This procedure lets GSM
engine log off from the network and allows the software to enter into a secure state
and safe data before disconnecting the power supply. The mode is referred to as
POWER DOWN mode. In this mode, only the RTC stays active.
Before the device is turned off, it sends the following response:
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Page 28 of 46
TANGO55/i & TANGO56/i User's Manual Version 1.05
^SMSO: MS OFF
OK
^SHUTDOWN
After sending AT^SMSO do not enter any other AT commands. There are two ways to
verify when the modems turn off:
Wait for the URC “SHUTDOWN”. It indicates that data have been stored
non-volatile and the modems turn off in less than 1 second.
Be sure not to disconnect the operating voltage V
Vin+
before the URC “SHUTDOWN”
has been issued. Otherwise you run the risk of losing data.
While the GSM engine is in POWER DOWN mode the application interface is
switched off and must not be fed from any other source.
4.2.6 Maximum number of turn-on/turn-off cycles
Each time the modems are shut down, data will be written from volatile memory to
flash memory. The guaranteed maximum number of write cycles is limited to 100.000.
4.2.7 Automatic GPRS Multislot Class change
Temperature control is also effective for operation in GPRS Multislot class 10. If the
board temperature increases to the limit specified for restricted operation (see 2.3
for temperature limits known as restricted operating) while data are transmitted over
GPRS, the module automatically reverts from GPRS Multislot TANGO55/56 returns to
the higher Multislot class. If the temperature stays at the critical level or even
continues to rise, TANGO55/56 will not switch back to the higher class. After a
transition from Multislot class 10 to Multislot class 8 a possible switchback to Multislot
class 10 is blocked for one minute. Please note that there is not one single cause of
switching over to a lower GPRS Multislot class. Rather it is the result of an interaction
of several factors, such as the board temperature that depends largely on the
ambient temperature, the operating mode and the transmit power. Furthermore,
take into account that there is a delay until the network proceeds to a lower or,
accordingly, higher Multislot class. The delay time is network dependent. In extreme
cases, if it takes too much time for the network and the temperature cannot drop
due to this delay, the module may even switch off. For GPRS connection see related
document [0.3].
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Page 29 of 46
TANGO55/i & TANGO56/i User's Manual Version 1.05
5 GENERAL GUIDELINES FOR THE USE OF THE
TANGO55/56
5.1 Getting started
5.2 Hardware & software requirements
A valid SIM card.
Free compatible COM serial port
Pentium 90 or higher.
System memory: At least 64MB
Operating system: Windows® 95, 98/Me/2000/XP
For data, Web and email applications.
Dial-up networking configured to your ISP (Internet Service Provider).
5.2.1 Minimum hardware interface to get started
As a minimum, it is necessary to connect the following interfaces to operate the
TANGO55/56 properly:
5.2.1.1 Connecting the external antenna (SMB type)
If you are using an antenna from FALCOM (see chapter 7.2 Possible antenna),
connect adapter cable “KA08-F“ to the antenna connector (ANT-001 or ANT-010) and
then connect it to the modem.
For other external antennas, please refer to manuals of manufacture’s GSM
antenna. Make sure the external antenna is for the GSM 900/1800 or 850/1900
frequencies with impedance of 50Ω, and also the connector is secured tightly.
Note: Please use an antenna designed for GSM 900/1800 and/or 850/1900
MHz operation. Incorrect antenna will affect communication and
even damage the modem.
Figure 8.a: Connect the adapter cable to the antenna Figure 8.b: Connect the GSM antenna
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5.2.1.2 Installing the SIM card
Keep all miniature SIM cards out small children’s reach. The SIM card and its contacts
can be damaged by scratches or bending, so be careful when handling, inserting or
removing the SIM card.
Open the cover cap on the underside of the modem, push the SIM card holder
forwards on the inscription “PUSH > OPEN”, flap the holder upwards and insert the
SIM card into the SIM card holder and then push it down (ensure that the bevelled
corner is on the top right and the golden contact area is facing downwards). Make
sure that the SIM card is fit in the SIM card holder. Push the cap of SIM card holder
down until it closed. Close the opening with the cover cap.
Figure 9: Open the cover cap. Figure 10: Push the inscription “PUSH ▲
OPEN” to open the SIM card holder.
Figure 9: Open the SIM card holder. Figure 11: Insert the SIM card.
Hints: To remove the SIM card please follow the same steps as described
above and remove it.
Important: Do not insert or remove the SIM card when the
device is under power.
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5.2.1.3 Mounting the terminal
Figure12.a Place the modem on the cradle and firmly fixed.
Figure12.b Cable ties
Place the modem (if it is needed) on the cradle and push it down, make sure that
the modem does not move up and down inside the cradle, the cradle is in the sales
package. After that, the user have to use the cables ties for fixing (figure 12.a) the
modem and the power supply cable. For power supply cable use the small cable
ties and for modem use one of the length cable ties. The dimensions of cable ties
are 200 x 3.5 mm and 140 x 3.5 mm.
Note: If you want to mount the modem on a wall or vehicle, first attach
the cradle to the wall or vehicle as described on the chapter
below before placing the modem on the cradle.
5.2.1.4 Mounting the cradle and placing the terminal
CAUTION: IN ORDER TO COMPLY WITH RF EXPOSURE REQUIREMENTS, INSTALL THE
MODEM SO THAT A MINIMUM DISTANCE OF 20 CM CAN BE MAINTAINED
BETWEEN THE ANTENNA AND ALL PERSONS. IF YOU USE AN EXTERNAL
ANTENNA, INSTALL THE ANTENNA SO THAT A MINIMUM DISTANCE OF 20 CM
CAN BE MAINTAINED BETWEEN THE ANTENNA AND ALL PERSONS, WITH
ANTENNA GAIN NOT EXCEEDING 3 DBI.
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Place the modem in a proper location, for example on the desk far enough from
your PC or . It is also possible to install the terminal to a wall or a vehicle:
1. Choose a location far enough from electronic devices so that no
interference occurs.
2. Drill appropriate screws through the two indentations on the cradle.
3. After you have secured the cradle to the wall or vehicle, place the
terminal as described above in section "Mounting the terminal"
Note: All radio transmitting devices send signals which may cause interference in
different electronic devices (PC, television etc). To avoid interference, place the
terminal far enough from other electronic devices.
5.2.1.5 Connecting the data cable
You can use the optional RS232 serial cable to connect the D-SUB connector
(Interface B) to external controller/computer. Connect the 9-pin Sub D-female serial
cable to COM1 or COM2 on your PC (or to another free serial interface port), as
shown in Figure 13.a. Connect the other end of the 9-pin Sub D-male serial cable to
the 9-pin serial interface port on the TANGO55/56 modem, as shown in Figure 13.b.
Figure 13.a: Connect 9-pin serial to PC Figure 13.b: Connect 9-pin serial to modem.
5.2.1.6 Connecting the DC power supply
Connect the open ending of the power supply cable to a power adapter (10.8...31.2
VDC). Refer to the following table for power supply requirement.
Power Supply Requirement:
Parameters Min Typical Max Unit
Supply voltage 10.8 12 31.2 V DC
Table 14: Required power supply
Connect the power supply cable with 4-pin Micro-Fit-male connector to the
modem’s 4-pin Micro-Fit-female connector, and supply voltage via the power
adapter (see figure 14.b). Then, connect the Ignition line provided on this connector
also to the Vin+ pin.
When the modem is turned on, the status indicator (green and yellow) on the top of
RJ45-Audio interface will be lit when power is on. After you have entered the PIN
number (if needed) the green LED will go flashing slowly (that means registration into
the network is successfully).
Note: Do not used the external cable for power supply without a voltage
adapter.
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Figure 14.a: Connect the DC power supply
Pin designations for the connector and striped ends are shown in chapter 7.1.1,
page 41.
Figure 14.b: Power supply cable
5.2.2 Terminal emulator setup
Below is an example based on the Windows™ Hyperterminal application (terminal
emulator program).
The instructions below describe how to use the TANGO55/56 Modem with a PC
running Windows 2000.
5.2.2.1 Checking the Modem (using Microsoft Windows™ Hyper Terminal
as example)
You can communicate with the modem through one of the provided RS232 serial
ports using a terminal program , see example below:
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Figure 15: Using Microsoft Windows™ Hyper Terminal
1. On Windows 2000, start the Hyper Terminal program. Assign the name for a
new session on the displayed window.
Figure 16: Assign the name for a new session
2. Choose the correct COM Port and baud rate settings (9600bps, 8 bit, no
parity bit, 1 stop bit).
Figure 17: COM Port transmission settings
3. On the terminal screen, type “AT” to check the “OK” response from the
Modem.
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Figure 18: Check the response from TANGO55/56
Now you can configure the TANGO55/56 modem according to your requirements
and according to the AT-Command set.
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5.2.3 Getting started to GPRS Network
The following instructions are available only for TANGO55/56 versions providing GPRS.
What is GPRS:
GPRS is a complete new part of the existing GSM network.
GPRS is packed switched high speed mobile data.
GPRS is an efficient approach to upgrade the existing GSM to a
packet switched system.
GPRS is an important step in direction to mobile internet.
What you need?
GPRS settings from your network provider
- APN (name of access point that connects the mobile network
to the Internet)
- Primary and secondary DNS
- IP header compression
- IP address (DHCP or static)
- User name and password (may be optional)
- Dial number
Modem installation and configuration
Dial-Up Network installation and configuration
Should the standard 19200 modem not installed, you have to install it, else please
refer to the separated manual “gprs_startup_user_guide.pdf”.
5.3 Basic Operation
Followings are example of some AT-commands. Please refer to the AT Command
manual for a full discription.
The AT Command manual is available on the Falcom’s Website
http://www.falcom.de/
NOTE: Issue AT+CMEE=1 to have extended error code (+CME ERROR)
Description AT Commands Modem responce Comments
Network registration
checking
AT+CREG? CREG=<mode>,1 Modem registered into the network
CREG=<mode>,2 Registration lost, re-registration attempt
CREG=<mode>,0 Modem not registration into the network, no
registration attempt
Receiving an incom-
ing call
RING An incoming call is waiting
ATA Answer the call
OK
Make a call ATD0123456789;
Do not forget the < ; > at the end for < voice >
OK Communication established
CME ERROR: 3 AOC credit exceeded or a communication is
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already established
Make an emergency
call
ATD112;
Do not forget the < ; > at the end for < voice >
OK
Communication loss NO CARRIER
Hang up
ATH
OK
Enter PIN code
AT+CPIN=0123
OK
PIN code accepted
CME ERROR: 16 Incorrect PIN Code (with + CMEE=1 mode)
CME ERROR: 3 PIN already entered (with + CMEE=1 mode)
Save parameter non-
volatile memory
AT&W OK The configuration settings are stored
Table 15: AT-commands for basic operation
5.3.1 Troubleshooting
1. The modem status indicators do not light:
• Check if the modem is connected to a 10.8 .. 31.2 V DC power
supply properly.
• Check if also the Ignition Line is connected to a 10.8 .. 31.2 V DC
power supply properly.
• Check if the power connector is properly inserted.
2. The modem does not respond to the terminal program:
• Check if the RS232 cable is connected properly.
• Check if your program has proper settings. Manufacture settings of
the modem are as below:
Upto 115200 bps
8 data bits
No parity bit
1 stop bit
2
3 GPRS troubleshooting (TANGO55/56 units)
• Refer to the separate manual “gprs_startup_user_guide.pdf”.
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TANGO55/i & TANGO56/i User's Manual Version 1.05
6 HOUSING
Figure 40: Housing of TANGO55/i and TANGO56/i
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6.1 Housing of cradle
Figure 41: Dimensions of the cradle.
Figure 42: View of the cradle.
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TANGO55/i & TANGO56/i User's Manual Version 1.05
7 APPENDIX
7.1 Recommendations for power supply
It is recommended to use the PS002 power supply. Also any other power supply in
the range of 10.8 ... 31,2 V DC can be used..
If the power supply is using input-voltages of more than 50 Vrms
or 75 V DC it is the response of the applicant to conform with the safety requirements
of Telecommunication Terminal Equipment (such as 73/23/EEC).
7.1.1 External cable for power supply
Power cable, included in the package, shall be used for power supply connection.
The external power cable is a four-conductor cable with stripped and tinned ends.
Connect the white and yellow leads of the external power cable to the positive side
of the DC power source. Connect the brown lead of the external power cable to
the negative side of the DC power source. The green lead of the external power
cable should be left open (not connected).
COUTION: Observe polarity when connecting the external power cable.
Incorrect input polarity can damage the power adapter.
The connector of power cable is a Micro-Fit 3.0 one.
Part number: 43025-0400 (male)
Figure 43: View of external cable for power supply
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7.2 Possible external antenna
There is no antenna included in the deliver package, but the below designed
antennas provided by FALCOM can be used (available upon request).
Order option Description
ANT-001 GSM antenna: 900/1800 for TANGO55i
Connector type: FME-male
Cable lenght: 2.5 m
Mounting: magnetic base
Antenna Type: external
Max. Antenna Gain: 1dBi
ANT-010 GSM antenna: 850/1900 MHz, for TANGO56i
Connector type: FME-male
Cable lenght: 2.5 m
Mounting: magnetic base
Antenna Type: external
Max. Antenna Gain: 1dBi
KA08-F Antenna cable with SMB-female and FME-female connector.
The TANGO55 modem with SMB connector incorporates a 'Snap On' latching action
in order to make the connection easier with an excellent RF performance. An
additional advantage is its small physical size. Figure 44.a below shows the
possibilities of external GSM/GPRS antennas.
A special adapter cable called - KA08-F enables you to connect the TANGO55 to
the ANT-001 M or ANT-010.
Figure 44.a: ANT-001 with FME-male female
connector.
Figure 44.b: KA08-F Adapter cable with
SMB-FME-female connector.
7.3 Possible external headset
A balanced microphone input and a balanced speaker output are supported by
the TANGO55/56 modem, so an external headset interface through the RJ45
connector (interface C) is available.
Follow the characteristics to install a headset:
2KΩ differential Microphone impedance
2V Microphone bias voltage
0,5mA Microphone input current
>32Ω (<1nF) Speaker impedance
FALCOM recommends the headset – HS-TWIST/TANGO (including split ferrite WE
7427114)
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TANGO55/i & TANGO56/i User's Manual Version 1.05
8 HOW TO UPDATE THE NEW FIRMWARE INTO THE
TANGO55/56 MODEMS
In order to allow users of TANGO55/56 to utilize newly released firmware, a program
has to be available to update the on-board Flash-Memory. The update program
with the new firmware will be distributed electronically via Internet or CD.
The update procedure of a new firmware erases the whole internal
flash memory and the pre-settings stored on it will be absolutely erased,
too.
In order to update a new TANGO55/56 firmware, please, follow step-by-step the
instructions described below:
• Point your web browser to www.falcom.de, go to support drivers &
firmware TANGO55 or TANGO56 and download the “wswup_mc55_x.exe“
or wswup_mc56_x.exe Update program, respectively.
• Connect the serial port of the TANGO55/56 to one of the available COM ports
on your PC (e.g. COM1).
• If TANGO55/56 is still powered on power it down. Make sure that the V+ and
IGN lines are disconnected from the external power source.
• Start “wswup_mc55_01.06.exe” Update program. The Dialog Window shown
below appears.
• Please, refer to the figure above for the following points. Select the Skip radio
button near the Pre-Check progress bar.
• Click on the “Serial Config” button, and in the “Com” settings box select the
COM port where your TANGO55/56 is connected (i.e COM1) and in the
“Baud” settings box select the Baud rate to 115200.
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• Close this dialog box by clicking on the OK button.
• Now, (important !!!!) to start the firmware update, firstly connect the IGN line
to the external power source (set to HIGH from 10.8 to 32 VDC), then press
the “START” button and within 1 second after the “START” button has been
clicked, connect the V+ line to the external power source (set to HIGH from
10.8 to 32 VDC).
• The current positions of the programming progress will be displayed in the
progress bars. The update procedure takes approximately 4 minutes.
Note: Do not interrupt this procedure. A partially reprogrammed flash
memory could lead to invalid operation of the terminal and permanent
damage of the components.
• If any error is generated after clicking the “START” button or during flash
programming (see figure below), check cables and retry the operation. If the
the “START” button is pressed and within 1 second the V+ and IGN lines have
not been connected to the external power source (set to HIGH), the error
shown in the figure below will be occurred.
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TANGO55/i & TANGO56/i User's Manual Version 1.05
If download has been completed successfully, power down the
TANGO55/56 (disconnect the V+ line). The TANGO55/56 with the new
firmware is automatically started at the next power up (connect the V+ and
the IGN line to the external power source).
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TANGO55/i & TANGO56/i User's Manual Version 1.05
9 RF EXPOSURES
This device contains 850/1800/1900 MHz or 900/1800/1900 MHz GSM/GPRS functions
that are operational in these frequencies respectively.
The following statements according to the FCCs are applied for the TANGO56, only.
However, the TANGO56 terminal contains 1800 MHz GSM functions that are not
operational (must not be used) in U.S. Territories. This filing is only applicable for
850MHz GSM/1900 MHz PCS operations, whereby only these frequencies (850MHz
GSM/1900 MHz PCS) are possible to be used in U.S. Territories.
The external antennas used for this mobile transmitter must provide a separation
distance of at least 20 cm from all persons and must not be co-located or operating
in conjunction with any other antenna or transmitter.
Statement according to FCC part 15.19:
This device complies with Part 15 of the FCC Rules. Operation is subject to the
following two conditions:
()1 this device may not cause harmful interference, and
()2 this device must accept any interference received, including
interference that may cause undesired operation.
Statement according to FCC part 15.105:
NOTE: This equipment has been tested and found to comply with the limits for
a Class B digital device, pursuant to Part 15 of the FCC Rules. These limits are
designed to provide reasonable protection against harmful interference in a
residential installation. This equipment generates, uses and can radiate radio
frequency energy and, if not installed and used in accordance with the
instructions, may cause harmful interference to radio communications.
However, there is no guarantee that interference will not occur in a particular
installation. If this equipment does cause harmful interference to radio or
television reception, which can be determined by turning the equipment off
and on, the user is encouraged to try to correct the interference by one or
more of the following measures:
• Reorient or relocate the receiving antenna.
• Increase the separation between the equipment and receiver.
• Connect the equipment into an outlet on a circuit different from that to
which the receiver is connected.
• Consult the dealer or an experienced radio/TV technician for help
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