FALCOM C2D-SI User manual

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FALCOM C2D-SI
User Manual
Version 1.07

FALCOM C2D-SI VERSION 1.07
This document is a property of FALCOM GmbH and may not be copied or circulated without permission
Page 1
Contents
0 INTRODUCTION ..............................................................3
0.1 GENERAL........................................................................................................................................ 3
0.2 USED ABBREVIATIONS.................................................................................................................... 3
0.3 RELATED DOCUMENTS.................................................................................................................... 5
1 SECURITY .........................................................................6
1.1 GENERAL INFORMATION................................................................................................................. 6
1.2 EXPOSURE TO RF ENERGY.............................................................................................................. 6
1.3 EFFICIENT MODEM OPERATION ....................................................................................................... 6
1.4 ANTENNA CARE AND REPLACEMENT .............................................................................................. 7
1.5 DRIVING ......................................................................................................................................... 7
1.6 ELECTRONIC DEVICES..................................................................................................................... 7
1.7 VEHICLE ELECTRONIC EQUIPMENT ................................................................................................. 7
1.8 MEDICAL ELECTRONIC EQUIPMENT ................................................................................................ 7
1.9 AIRCRAFT....................................................................................................................................... 7
1.10 CHILDREN....................................................................................................................................... 8
1.11 BLASTING AREAS............................................................................................................................ 8
1.12 POTENTIALLY EXPLOSIVE ATMOSPHERES ....................................................................................... 8
1.13 NON-IONISING RADIATION.............................................................................................................. 8
2 SAFETY STANDARDS .....................................................9
3 TECHNICAL DATA........................................................10
3.1 PIN CONFIGURATION OF THE 60 PIN CONNECTOR.......................................................................... 13
3.1.1 Determining the External Equipment Type ................................................................................. 15
4 GSM MODEM..................................................................17
4.1 GENERAL...................................................................................................................................... 17
4.1.1 GSM capability............................................................................................................................ 17
4.1.2 GPRS capability........................................................................................................................... 17
4.1.3 GSM data services ....................................................................................................................... 17
4.1.4 RF characteristics......................................................................................................................... 17
4.1.5 SIM card reader ........................................................................................................................... 18
4.1.6 RS 232 ......................................................................................................................................... 18
4.1.7 Possible external devices ............................................................................................................. 18
4.2 SPECIAL FUNCTIONALITY PINS...................................................................................................... 19
4.2.1 Firmware download procedure .................................................................................................... 23
4.2.2 Resetting the GSM module by AT+CFUN=1,1 .......................................................................... 23
4.3 GSM 07.05 AND 07.07 COMMANDS ............................................................................................. 23
4.3.1 General AT commands ................................................................................................................ 24
4.3.2 SMS AT commands (GSM 07.05) .............................................................................................. 25
5 GPS CORE........................................................................26
5.1 RECEIVER ARCHITECTURE ............................................................................................................ 26
5.2 TECHNICAL DATA ......................................................................................................................... 27
5.3 TECHNICAL DESCRIPTION ............................................................................................................. 29
5.3.1 Technical specification ................................................................................................................ 29
5.4 HARDWARE INTERFACE ................................................................................................................ 30
5.4.1 Configuration and timing signals................................................................................................. 30
5.4.2 Serial communication signals ...................................................................................................... 30
5.4.3 DC input signals .......................................................................................................................... 31
5.4.4 General purpose input/output (Pin 51, 53, 54 and 56) ................................................................. 31
5.5 SOFTWARE INTERFACE ................................................................................................................. 31
5.5.1 SiRF binary data message............................................................................................................ 31
5.5.2 NMEA data message ................................................................................................................... 34

FALCOM C2D-SI VERSION 1.07
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6 HOUSING .........................................................................36
7 GSM/GPS EVALUATION KIT......................................37
8 EMC AND ESD REQUIREMENTS...............................39
9 CE CONFORMITY .........................................................40
Version history
Version number Author Changes
1.00 Sameh Awad Initial version
1.01 S. Mohamad -Fixing points (holes) described
-Counterpart for the 60 pin connector
added
1.02 F. Beqiri -Housing, AT-Commands,
Temperature limits, Pin configuration.
1.03 F. Beqiri -Pictures of C2D-SI module changed
-Description of pin 15 corrected.
1.04 F. Beqiri -Hint in Trickle Power Mode added
1.05 F. Beqiri -Description of pin 15 corrected.
1.06 F. Beqiri -Description of pin 18 (VCCRTC)
backup battery power completed.
-Table 3 power consumption for C2D-
SI updated.
-Table 4 power consumption for C2D-
SI-G10 added.
-Power consumption of GPS receiver
updated.
1.07 F. Beqiri -Determination for DCE-DTE
connection (Chapter 3.1.1) added.
-Based on the DCE-DTE connection
the name of RX and TX (from GSM
core) signals in the table 7 updated.
The name of RxA, TxA and RxB, TxB
(from GPS core) updated, too.
-Mechanical dimensions of module
updated.

FALCOM C2D-SI VERSION 1.07
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0Introduction
0.1 General
This description is focussed on the GSM/GPS module FALCOM C2D-SI
from the FALCOM GmbH. It contains short information about purpose and
use of the FALCOM C2D-SI. The FALCOM C2D-SI is a combined
GSM/GPRS1) / GPS module. It contains dual band GSM and 12 parallel
channel GPS cores.
Figure 1: Views of FALCOM C2D-SI
Information furnished herein by FALCOM GmbH is believed to be accurate
and reliable. However, no responsibility is assumed for its use. Also the
information contained herein is subject to change without notice.
Users are advised to proceed quickly to the „Security“ chapter and read the
hints carefully.
1)The FALCOM C2D-SI is GPRS capable.
GPRS packet data features:
GPRS Class B, Class 10
Coding Schemes: CS1 to CS4
Compliant with SMG32 – Release 97
Note that the GPRS functionality is a subject of the implementation of
the current GSM/GPRS firmware.
0.2 Used abbreviations
Abbreviation Description
CTS Clear to send
DGPS Differential GPS
DOP Dilution of Precision

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Abbreviation Description
DSR Data Set Ready
DTR Data Terminal Ready
DCD Data Carrier Detect
ECEF Earth-Centered Earth-Fixed Co-ordinate system
EEPROM Memory for parameter
EGSM Enhanced GSM
ESD Electrostatic Discharge
ETS European Telecommunication Standard
GPRS General Packet Radio Service
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
RF Radio Frequency
RI Ring Indication
RTC Real Time Clock
RTCM Radio Technical Commission for Maritime Services
RTS Ready To Send
Rx Receive direction
RXD Data input
RXQUAL Received Signal Quality

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Abbreviation Description
SIM Subscriber Identification Module
SMS Short Message Service
SRAM Static Random Access Memory
SW Software
TA Terminal Adapter
TE Terminal Equipment
TP Transmit Protocol
TTFF Time to First Fix
Tx Transmit direction
TXD Data output
SA Selective Availability
WAAS Wide Area Augmentation System
MSK Minimum Shift Keying
Table 1: Used abbreviations
0.3 Related documents
1. ETSI GSM 07.05:“Use of Data Terminal Equipment–Data Circuit
terminating Equipment interface for Short Message Service and Cell
Broadcast Service”
2. ETSI GSM 07.07“AT command set for GSM Mobile Equipment”
3. ITU-T V.25ter“Serial asynchronous automatic dialling and control”
4. SiRF binary and NMEA protocol specification;
www.falcom.de/Service/Manuals
5. “AT commands interface for FALCOM A2D, A2D-JP, A2D-SI, C2D,
C2D-SI and A3D- Series”.
www.falcom.de/Service/Manuals

FALCOM C2D-SI VERSION 1.07
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1Security
IMPORTANT FOR THE EFFICIENT AND SAFE OPERATION OF
YOUR GSM-MODEM, READ THIS INFORMATION BEFORE USE!
Your cellular engine FALCOM C2D-SI 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 FALCOM C2D-SI. Please read this chapter carefully before starting to
use the cellular engine FALCOM C2D-SI.
1.1 General information
Your FALCOM C2D-SI modem utilises the GSM/GPRS 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 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
guidelines below.
1.3 Efficient modem operation
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.
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.

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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.
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 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 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 FALCOM C2D-SI 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 FALCOM C2D-SI 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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1.10 Children
Do not allow children to play with your FALCOM C2D-SI 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.
1.11 Blasting 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.
1.12 Potentially explosive atmospheres
Turn your modem FALCOM C2D-SI 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.
1.13 Non-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
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.

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2Safety standards
This GSM modem complies with all applicable RF safety standards.
The embedded GMS 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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3Technical data
General specifications
Dimensions 64 mm x 41.5 mm x 12.5mm (B x W x H)
(for more details see chapter 6 Housing)
Weight 43g
Table 2: General specifications
C2D-SI-900/1800 power consumption
VC3 3.3 V DC ±5 %
GPS on
/GSM off Max. 65 mA continuous mode
VC5 5.0 V DC ±5 %
Average current (in mA at 5 V nominal):
900 1800 MHz GSM band
14 14 mA in idle mode (base station sends at -85 dBm)
167 135 mA in transmit mode at power level 7/3
220 189 mA in transmit mode at power level 5/0
GPS off
/GSM on
Serial interface is applied and working.
Table 3:Power supply and current consumption (for C2D-SI) at 5 V DC

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C2D-SI-900/1800-G10 power consumption
VC3 3.3 V DC ±5 %
GPS on
/GSM off Max. 65 mA continuous mode
VC5 5.0 V DC ±5 %
Average current (in mA at 5 V nominal):
900 1800 MHz GSM band
16 16 mA in idle mode (base station sends at -85 dBm)
185 135 mA in transmit mode at power level 7/3
GPS Off
/GSM on
237 183 mA in transmit mode at power level 5/0
GPS off
/GPRS on 441 mA
in transmit/receive mode at maximum power level
5 (3 x downstream +2 x upstream using Coding
Scheme 4 (CS-4))
Serial interface is applied and working.
Table 4: Power supply and current consumption (for C2D-SI-G10) at 5 V DC
Temperature limits
Operation/Full GSM specification
compliant -20°C to +55°C
Transportation -40°C to +70°C
Storage -30°C to +85°C
Table 5: Temperature limits

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Interface specifications
Interface A 60pin connector AMP 177984-21)
Interface B GPS 50 Ω, MCX female
Interface C GSM 50 Ω, MC-Card (Radiall)
Interface D SIM card reader for small SIM cards (3V)
EHoles for fixing after mounting
Recommended screws: 2,2 x 16 mm
The screw could be longer and it depends on the
customer’s application
Table 6: Interface specifications
1) 60 pin connector AMP 177984-2
Counterpart for application2): AMP 177983-2
2) The module FALCOM FALCOM C2D-SI is for flat mounting
and the space between the highest point of the module and its
bottom is 2 mm.
Figure 2: Interfaces of the C2D-SI modem

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3.1 Pin configuration of the 60 pin connector
PIN GSM modem DESCRIPTION LEVEL
1MIC P2 a Microphone 2 positive differential input
2MIC N2 a Microphone 2 negative differential input
3SPK P2 a Speaker 2 positive differential output
4SPK N2 a Speaker 2 negative differential output
5DTR0 Data Terminal Ready CMOS 2,8 V input
6CTS0 Clear To Send CMOS 2,8 V output
7DSR0 Data Set Ready CMOS 2,8 V output
8RTS0 Ready To Send CMOS 2,8 V input
9 RI0 Ring Indicator CMOS 2,8 V output
10 DCD0 Data Carrier Detect CMOS 2,8 V output
11 SOFT ON Turn phone on CMOS 2,8 V input
12 RING PWM Ringer Interface CMOS 2,8 V output
13 RX Receive Data CMOS 2,8 V output
14 TX Transmit Data CMOS 2,8 V input
15 Reserved Please do not connect !
16 RESET GSM Reset-Active Low SCHMITT-Trigger
17 MIC N1 a Microphone 1 negative differential input
18 VCCRTC RTC back-up battery supply +2 .. 2.75 V input
19 SPK N1 a Speaker 1 negative differential output
20 MIC P1 a Microphone 1 positive differential input
22 SPK P1 a Speaker 1 positive differential output
23 VC5 Power supply 5 V DC
24 VC5 Power supply 5 V DC

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PIN GSM modem DESCRIPTION LEVEL
25 VC5 Power supply 5 V DC
26 VC5 Power supply 5 V DC
27 GPIO1 (GSM) General purpose CMOS 2,8 V inp./out.
28 VC5 Power supply 5 V DC
30 EN Internal Power enable CMOS 2,8 V input
31 GROUND - -
32 GROUND - -
33 GROUND - -
34 GROUND - -
35 SIMPREK SIM present for external card CMOS 2,8 V input
36 Reserved Please do not connect!
37 SIMDATA SIM Data CMOS 2,8 V inp./out.
38 SIMVCC SIM Card power supply 3 V DC output
39 SIMRST SIM Reset output
40 SIMCLK SIM Clock output
Table 7: Pin configuration AMP 177984-2
PIN GPS receiver DESCRIPTION LEVEL
21 GPIO15 Reserved CMOS 3,3 V inp./out.
29 GPIO10 Reserved CMOS 3,3 V inp./out.
41 TMARK 1 PPS Time Mark Output CMOS 3,3 V output
42 BOOTSELECT For firmware update active high
43 GROUND - -
44 GROUND - -
45 SDI2 Serial 2 Data Input CMOS 3,3 V input
46 GROUND - -

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PIN GPS receiver DESCRIPTION LEVEL
47 GROUND - -
48 SDO2 Serial 2 Data Output CMOS 3,3 V output
49 SDO1 Serial 1 Data Output CMOS 3,3 V output
50 SDI1 Serial 1 Data Input CMOS 3,3 V input
51 GPIO6 Reserved CMOS 3,3 V input/output
52 GROUND - -
53 GPIO5 Reserved CMOS 3,3 V inp./out.
54 GPIO A Reserved CMOS 3,3 V inp./out.
55 M-RST Master Reset Input active low
56 GPIO7 Reserved CMOS 3,3 V inp./out.
57 VBATT_RTC Battery Backup Input 3 V DC
58 3,3 V DC Primary DC Power 3,3 V DC
59 Reserved Reserved for Preamplifier
Power.(see page 27) (3,3 V DC - 6 V DC)
60 3,3V DC Primary DC Power 3,3 V DC
Table 8: Pin configuration AMP 177984-2, GPS receiver
3.1.1 Determining the External Equipment Type
Before you connect the C2D-SI module (DCE unit) 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.
The C2D-SI is 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:

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GSM Terminal (DCE) to Application (DTE)
TX ◄----------------------- TXD
RX -----------------------►RXD
RTS0 ◄----------------------- RTS
CTS0 -----------------------►CTS
DTR0 ◄----------------------- DTR
DSR0 -----------------------►DSR
DCD0 -----------------------►DCD
RI0 -----------------------►RING
Table 11: The signaling definitions between DTE and DCE.

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4GSM modem
4.1 General
4.1.1 GSM capability
E-GSM and DCS (GSM ETSI Phase I and II)
4.1.2 GPRS capability
The FALCOM C2D-SI is GPRS class B, class 10 capable.
It supports PBCCH/PCCCH; coding schemes: CS1 to CS4 and it is
compliant with SMG32 – Release 97.
Note that the GPRS functionality is a subject of the implementation of the
current GSM/GPRS firmware.
4.1.3 GSM data services
300....14400 BPS, asynchronous, transparent and non-transparent
(V.21, V.22, V.23, V.22bis, V.26ter, V.32, V.34, V.110)
4.1.4 RF characteristics
Receiver
EGSM Sensitivity < -104 dBm
DCS Sensitivity < -100 dBm
Selectivity @ 200 kHz > +9 dBc
Selectivity @ 400 kHz > +41 dBc
Dynamic range 62 dB
Intermodulation > -43 dBm
Co-channel rejection ≥9 dBc
Table 9: Receiver
Transmitter
Maximum output power (EGSM) 33 dBm ±2 dB
Maximum output power (DCS) 30 dBm ±2 dB

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Transmitter
Minimum output power (EGSM) 5 dBm ±5 dB
Minimum output power (DCS) 0 dBm ±5 dB
H2 level ≤30 dBm
H3 level ≤30 dBm
Noise in 925....935 MHz ≤67 dBm
Noise in 935....960 MHz ≤79 dBm
Noise in 1805....1880 MHz ≤71 dBm
Phase error at peak power < 5° RMS
Frequency error ±0.1 ppm max
Table 10: Transmitter
4.1.5 SIM card reader
Internal, for small SIM cards (3 V)
External, 10...15 cm maximum cable length
4.1.6 RS 232
RS 232
2.8 V RX, TX, RTS,CTS, DTR, DSR, DCD, RI
300....115200 Baud rates for serial link (2400...19200 with auto-bauding)
Table 11: RS 232
4.1.7 Possible external devices
Audio
2 KΩdifferential Microphone 1 impedance
2 V Microphone 1 bias voltage
0,5 mA Microphone 1 input current
2 KΩdifferential Microphone 2 impedance

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Audio
2 V Microphone 2 bias voltage
0,5 mA Microphone 2 input current
> 50 Ω(<1nF) Speaker 1 impedance
> 50 Ω(<1nF) Speaker 2 impedance
Table 12: Audio
4.2 Special functionality pins
Table 7 and table 8 show the pin-configuration of the AMP 177984-2.
In these tables CMOS means 2.8 V. You may use a 3 V or 3.3 V CMOS
level logic (never 5 V) on the 2.8 V I/O’s. However, it is required to add
serial resistance on all the lines you will use (typical value: from 4.7 to 10
KΩ).
There are a few pins needed for the operation of the module. The handling
of pins is described as follows.
Pin 30 (EN)
This signal is an input of the internal voltage regulator.
Pull to LOW to switch the voltage regulator off (for minimum current
consumption).
Pull to HIGH or leave the signal open if EN is not used.
Pin 27 (GPIO 1 ÆFlash_LED)
This signal can be used to show the current status of the module:
If GPIO 1 is LOW then the module is off.
If it is continuously HIGH then module is on, but not registered into a
network.
If GPIO 1 is flashing in a 2sec period then the module is on and
registered into a network.
If it flashes in a 1sec period then the module is on and a call is in
progress (incoming or outgoing).
GPIO 1 can be an input into a controller (here it needs to be driven by
an open collector circuit) or used together with a LED (see figure 3).