INVENTIA MT-703 User manual
Telemetry Module
MT-703
telemetria pl
Telemetry Module
MT-703
User Manual
MT-703
Telemetry Module
MT-703
User Manual
GSM/GPRS Telemetry Module
for monitoring and control
Class 1 Telecommunications Terminal
Equipment for GSM 850/900/1800/1900
v
5.08
INVENTIA Sp. z o.o
1471
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MT-703
© 2010 Inventia Ltd.
Publisher:
5.08
Warsaw, July 2010
Version:
MTC Compatibility:
5.08
INVENTIA Sp. z o.o.
ul. Kulczyńskiego 14
02-777 Warszawa
Tel: +48 22 545-32-00
inventia@inventia.pl
www.inventia.pl
1
INDEX
1.DESIGNATIONOFTHEMODULE.............................................................................................................................4
2.GSMREQUIREMENTS............................................................................................................................................5
3.DESIGNOFTHEMODULE.......................................................................................................................................5
3.1.LAYOUTOFMT‐703ELEMENTS......................................................................................................................................5
3.2.THERESOURCES...........................................................................................................................................................5
3.2.1.Binaryinputs....................................................................................................................................................6
3.2.2.Analoginputs...................................................................................................................................................7
3.2.3.Timers...............................................................................................................................................................7
3.2.4.Theinternallogger...........................................................................................................................................8
3.2.5.Realtimeclock.................................................................................................................................................8
3.3.USBINTERFACE...........................................................................................................................................................9
3.4.POWERINGOFTHEMODULE.........................................................................................................................................10
3.5.SIMCARD.................................................................................................................................................................10
3.6.LEDS.......................................................................................................................................................................11
3.7.ACTIVATEBUTTON...................................................................................................................................................11
3.8.RESETBUTTON.........................................................................................................................................................11
3.9.THEANTENNA............................................................................................................................................................12
3.10.MODULEHOUSING...................................................................................................................................................12
4.CONNECTINGTHEMODULE.................................................................................................................................13
4.1.CONNECTINGTHEBINARYINPUTSI1,I2..........................................................................................................................13
4.2.CONNECTINGTHEANALOGINPUTSA1,A2......................................................................................................................13
4.3.CONNECTINGSUPPLYVOLTAGE......................................................................................................................................14
5.RUNNINGTHEMODULE......................................................................................................................................15
5.1.CONNECTINGTHEANTENNA..........................................................................................................................................15
5.2.INITIALSETUP.............................................................................................................................................................15
5.3.INSERTINGSIMCARD..................................................................................................................................................16
5.4.STARTINGTHEMODULE...............................................................................................................................................17
6.CONFIGURATION.................................................................................................................................................19
6.1.GROUPSOFPARAMETERS.............................................................................................................................................19
6.1.1.TheHeadergroup..........................................................................................................................................19
6.1.1.1.Modulename.............................................................................................................................................................19
6.1.1.2.Moduletype...............................................................................................................................................................20
6.1.1.3.IMEInumber..............................................................................................................................................................20
6.1.1.4.Moduleserialnumber................................................................................................................................................20
6.1.1.5.Modulefirmwareversion...........................................................................................................................................20
6.1.1.6.Configurationfileversion...........................................................................................................................................20
6.1.1.7.Configurationidentifier..............................................................................................................................................20
6.1.1.8.Lastconfigurationdate..............................................................................................................................................21
6.1.1.9.Lastreadingtime........................................................................................................................................................21
6.1.2.TheGeneralgroup..........................................................................................................................................21
6.1.2.1.SIMcardPINnumber.................................................................................................................................................21
6.1.2.2.GSMband...................................................................................................................................................................22
6.1.2.3.Accesstoconfiguration..............................................................................................................................................22
6.1.2.4.Configurationpassword.............................................................................................................................................22
6.1.2.5.UseofGPRS................................................................................................................................................................22
6.1.2.6.MonthlySMSlimit......................................................................................................................................................23
2
6.1.2.7.USBmode...................................................................................................................................................................23
6.1.2.8.Lowbatteryvoltagealarm.........................................................................................................................................24
6.1.3.TheGPRSgroup..............................................................................................................................................24
6.1.3.1.APNname..................................................................................................................................................................24
6.1.3.2.APNusername...........................................................................................................................................................24
6.1.3.3.APNloginpassword...................................................................................................................................................24
6.1.3.4.IPassignment.............................................................................................................................................................25
6.1.3.5.Device'sidentifier.......................................................................................................................................................25
6.1.3.6.ModuleIP...................................................................................................................................................................25
6.1.3.7.SpoolerIP...................................................................................................................................................................26
6.1.3.8.GPRStransmissionretriesnumber.............................................................................................................................26
6.1.3.9.Transmissiontimeout.................................................................................................................................................26
6.1.3.10.GPRStestingIP.........................................................................................................................................................26
6.1.3.11.Numberofloginretries............................................................................................................................................27
6.1.3.12.Idletimeafterloginerror.........................................................................................................................................27
6.1.3.13.Dataframeformat...................................................................................................................................................27
6.1.4.TheAuthorizednumbersgroup......................................................................................................................28
6.1.4.1.Numberofauthorisedphonenumbers.....................................................................................................................28
6.1.4.2.NumberofauthorizedIPaddresses...........................................................................................................................28
6.1.4.3.Phone.........................................................................................................................................................................28
6.1.4.4.IP................................................................................................................................................................................28
6.1.5.Resources.......................................................................................................................................................29
6.1.5.1.Terminals....................................................................................................................................................................29
6.1.5.1.1.BinaryinputsI1,I2..............................................................................................................................................29
6.1.5.1.1.1.Name..........................................................................................................................................................29
6.1.5.1.1.2.Filteringconstant........................................................................................................................................29
6.1.5.1.1.3.Moduleactivation......................................................................................................................................30
6.1.5.1.1.4.Counter.......................................................................................................................................................30
6.1.5.1.1.5.Pulseweight...............................................................................................................................................30
6.1.5.1.1.6.Ratecalculation..........................................................................................................................................31
6.1.5.1.1.7.AlarmHi......................................................................................................................................................31
6.1.5.1.1.8.AlarmLo.....................................................................................................................................................31
6.1.5.1.2.BinaryinputI3....................................................................................................................................................31
6.1.5.1.2.1.Name..........................................................................................................................................................31
6.1.5.1.3.AnaloginputsAN1,AN2.....................................................................................................................................32
6.1.5.1.3.1.Engineeringunits........................................................................................................................................32
6.1.5.1.3.2.Lowreference‐engineeringunits..............................................................................................................32
6.1.5.1.3.3.Lowreference‐internalunits....................................................................................................................32
6.1.5.1.3.4.Highreference‐engineeringunits.............................................................................................................33
6.1.5.1.3.5.Highreference‐internalunits....................................................................................................................33
6.1.5.1.3.6.AlarmHiHi..................................................................................................................................................33
6.1.5.1.3.7.AlarmHi......................................................................................................................................................33
6.1.5.1.3.8.AlarmLo.....................................................................................................................................................34
6.1.5.1.3.9.AlarmLoLo..................................................................................................................................................34
6.1.5.1.3.10.Alarmhysteresis.......................................................................................................................................34
6.1.5.2.Timers........................................................................................................................................................................34
6.1.5.2.1.Start....................................................................................................................................................................34
6.1.5.2.2.Measuretimer(T1)............................................................................................................................................35
6.1.5.2.2.1.Period.........................................................................................................................................................35
6.1.5.2.3.Transmissiontimer(T2)......................................................................................................................................35
6.1.5.2.3.1.Period.........................................................................................................................................................35
6.1.5.3.Logger........................................................................................................................................................................36
6.1.5.3.1.Activity...............................................................................................................................................................36
6.1.5.3.2.Writetimer.........................................................................................................................................................36
6.1.5.3.3.ReceiverIPaddress............................................................................................................................................36
6.1.5.3.4.Parameterlist.....................................................................................................................................................36
6.1.5.4.Status.........................................................................................................................................................................36
3
6.1.6.TheRulesgroup..............................................................................................................................................37
6.1.6.1.SMSsending...............................................................................................................................................................37
6.1.6.1.1.NumberofSMSsendingrules............................................................................................................................37
6.1.6.1.2.SMSsending.......................................................................................................................................................38
6.1.6.1.2.1.Triggersource.............................................................................................................................................38
6.1.6.1.2.2.Triggerflag..................................................................................................................................................38
6.1.6.1.2.3.SMSmessagetext.......................................................................................................................................39
6.1.6.1.2.4.Recipientnumber.......................................................................................................................................39
6.1.6.1.2.5.Statussending............................................................................................................................................39
6.1.6.2.Datasending..............................................................................................................................................................39
6.1.6.2.1.Numberofdatatransmissionrules....................................................................................................................40
6.1.6.2.2.Rulefordatasending.........................................................................................................................................40
6.1.6.2.2.1.Triggersource.............................................................................................................................................40
6.1.6.2.2.2.Triggerflag..................................................................................................................................................41
6.1.6.2.2.3.IPaddress...................................................................................................................................................41
6.2.INITIALSETUP.............................................................................................................................................................41
6.2.1.Counters.........................................................................................................................................................42
6.3.SAVINGTHECONFIGURATION........................................................................................................................................42
6.4.VERIFYINGTHECONFIGURATION....................................................................................................................................43
7.TROUBLESHOOTING............................................................................................................................................43
7.1.LEDSIGNALING..........................................................................................................................................................43
7.2.UNLOCKINGTHESIMCARD..........................................................................................................................................45
7.3.REPLACINGTHEBATTERY..............................................................................................................................................46
8.TECHNICALSPECIFICATIONS................................................................................................................................46
8.1.GENERAL..................................................................................................................................................................46
8.2.GSM/GPRSMODEM.................................................................................................................................................47
8.3.POWERING................................................................................................................................................................47
8.4.POWERSUPPLYOUTPUTFORANALOGSENSOR..................................................................................................................48
8.5.BINARYINPUTSI1,I2..................................................................................................................................................48
8.6.ANALOGINPUTSA1,A2..............................................................................................................................................48
8.7.INTERNALLOGGER......................................................................................................................................................48
8.8.DRAWINGSANDDIMENSIONS(ALLDIMENSIONSAREINMILLIMETERS.).................................................................................49
9.SAFETYINFORMATIONS......................................................................................................................................50
9.1.WORKINGENVIRONMENT............................................................................................................................................50
9.2.ELECTRONICEQUIPMENT..............................................................................................................................................50
9.2.1.Heartpacemakers..........................................................................................................................................50
9.2.2.Hearingaids...................................................................................................................................................50
9.2.3.Othermedicalequipment..............................................................................................................................50
9.2.4.RFMarkedequipment....................................................................................................................................50
9.3.EXPLOSIVEENVIRONMENT............................................................................................................................................50
10.APPENDICES......................................................................................................................................................51
10.1.CHANGELOG...........................................................................................................................................................51
10.2.TRIGGERINGINPUTS..................................................................................................................................................51
10.3.MEMORYMAP.........................................................................................................................................................52
10.4.FLAGS....................................................................................................................................................................53
10.5.HOUSING121207/121210‐TECHNICALSPECIFICATION................................................................................................54
4
1. Designation of the module
The MT-703 (or MT-703 HC) module is a specialized telemetry device. It is optimised
for use in the simple measuring or alarm systems, which do not have network power
supply.
The module features compact design and low energy consumption from integrated
batteries. It is also capable of continuous counting of pulses on binary inputs, local
logging of measuring results and spontaneous transmission of information in case of
pre-defined alarm conditions. That’s why this device may be used in many applications
which require a periodical checking of parameters and a long term battery operation.
The module is manufactured in two versions which differ in capacity of internal battery
set (MT-703 model with standard battery and MT-703 HC model with doubled battery
capacity).
The typical range of applications of MT-703 module are water-sewage systems,
especially in measuring the water flow by means of water meters with potential-free
contacts as well as monitoring the water level in reservoirs and wells.
We suggest that you should study the operating description and configuration of the
MT-703 module as well as the examples of applications and instructions regarding
optimization of power consumption, given in the appendixes.
5
2. GSM requirements
To ensure the proper operation of the telemetry module, it is necessary to use the
properly configured SIM card. The card should be delivered by the GSM operator who
provides the GPRS and/or SMS transmission services.
Except the capability of operation in GPRS mode, it is also necessary to register the
card in an APN with static IP addressing. The unique IP address assigned to the SIM
card will be the address identifier of the telemetry module in the APN. It enables the
transmission to other telemetry modules and/or to the servers operating within the
same APN structure.
It is absolutely necessary to ensure the proper GSM signal in the area where the
module antenna is to be installed. Using the module in the places with poor GSM signal
conditions may lead to the disturbances of the transmission as well as the loss of data,
which increase operating costs as well.
3. Design of the module
3.1. Layout of MT-703 elements
3.2. The resources
Hardware resources of the MT-703 module:
DI - binary
inputs 2 - with counting and powering of potential-free contact capabilities
1 - with alarm on opening the module cover
AI - analog
inputs 2 - 0-3.3 VDC, with option of powering the measured circuit
(3.3 VDC)
6
3.2.1. Binary inputs
The MT-703 telemetry module has two general purpose binary inputs (DI) indicated as
I1, I2, and one auxiliary binary input I3, which is factory connected with the cover
opening sensor.
Because the operation of the I3 input is factory fixed and it has no additional features
we focus on the functionality of the inputs I1, I2 only.
Both I1, I2 inputs have identical features and are designed for use with potential-free
contacts.
Basic features of the binary inputs are as follows:
Non-isolated inputs with a common voltage supply
Negative logic allowing energy saving
Active inputs even in a standby mode of the module
Capability of activating the module transmitter (module wake up)
Pulse counting function which works seamlessly without module wake up
The inputs operate with contacts placed between input and ground connectors. Each
input can be configured in one of three operation modes:
Common binary mode. In this mode the input detects the close/open state of the
contact. The state is detected only in case of wake up the module by Measuring
timer and it is stored in the internal logger (if enabled). This is the basic mode of
binary input operation.
Alarm mode. Basically this mode differs from the common mode in an immediate
detection of contact closing, which results in the immediate module wake up. Then
the module runs the measuring cycle and process the rules. It ensures the
asynchronous (i.e., independent on Measuring timer) transmission of alarm
information. Neither the measured value nor the input activation event are stored
in the internal logger. Additionally, neither the crossing of alarm thresholds on
analog inputs nor the increments and alarm level crossing on counters are
evaluated. Therefore in this mode the rules cannot be triggered by flags which are
set for analog alarm levels and for value increments in the counters.
Counter mode. Despite of the basic function this mode features pulse counting as
well. Pulses are counted with different weights which are set by the user (1, 10,
100 or 1000). The non-volatile 32-bit wide register is used to count the pulses,
providing the maximum count of 4,294,967,296 pulses. If the counting function is
enabled, the difference between the previous and the current status of the counter
can be calculated. This also gives the information about the counter content
increment. If the counting function is active, it is also possible to enable two alarm
levels, which create rules controlled by the levels themselves. As the consequence,
the binary inputs allow easy flow monitoring if they are connected to pulse flow-
meters.
7
You should notice the binary inputs are built in a way that enables the expansion of
their functionality. It means the counting input may simultaneously work as an alarm
input as well as a common binary input (if it has sense, of course).
The mode of input operation depends on its configuration.
3.2.2. Analog inputs
The MT-703 telemetry module has two analog inputs (AI) of voltage type marked as
AN1, AN2.
The inputs operate in 0 - 3.3 VDC voltage range. They convert an analog signal from
sensors powered by the 3.3 VDC voltages. These voltages are delivered by associated
powering outputs. To save the energy the converters are powered only within a time
period required for making a proper measurement.
The analog inputs of the module are not insulated. It has practically negligible influence
on the interference immunity, because the module is battery supplied (i.e., it has a
flowing potential).
Because the settling time of results on analog inputs is about 10 s, it means that the
inputs are not suitable for high-speed signal measurements.
3.2.3. Timers
The MT-703 telemetry module has two programmable timers used for different
purposes.
The Measuring timer (T1) is used for metering the measurement cycles defined by
switching the external sensors on/off. The sensors are powered from Vcc connectors.
During the measurement cycle the following measurements are carried out:
Testing the status of binary inputs
Signal measurements on analog inputs
Testing the alarms for analog inputs
Measurement of the supply voltage
Checking the low alarm for supply voltage
Computing increments of the counters content (if enabled)
Checking alarms for counters (if enabled)
Setting the flags according to the current state of the device
Processing the rules
8
After executing above operations the module returns to the stand-by mode.
The main purpose of the Transmission timer (T2) is metering the transmission
cycles for sending the content of internal logger. The timer initializes the module wake
up process, starts the data transmission and initializes the readout of signal values on
the module inputs. However, the timer does not check alarms on the analog inputs.
The activity period of the module amounts up to 2 minutes. After this time, the module
is obligatory put into stand-by mode. This means that when are troubles with SMS and
data sending, it may happen that the configured rules are not be fully processed. For
example, it may happen when there are several rules to be processed and each of
them requires the transmission repetition. When the module has to send the content of
the logger, the activity period is extended by 5 minutes.
The proper configuration of the timers enables the precise programming of the activity
as well as stand-by cycles of the module. It helps to optimise the energy consumption,
which is extremely important due to the extending the time of battery life.
3.2.4. The internal logger
The MT-703 telemetry module is equipped with programmable logger which can collect
up to 576 data records. This allows to store the 24 hours measurements, executed
every 5 minutes. The measured data are entered to the register synchronously with the
ticks of one of the module timers. All variable values marked for recording in the
configuration are saved. Entries in the logger have a timestamp provided by the
module real time clock (RTC). To achieve the coherence of recorded data it is
recommended the RTC should operate in UTC time scale.
The data stored in the logger are transmitted to the IP address given in the
configuration. The data receipt confirmation causes removing them from the logger
memory.
ATTENTION!!!
The recording function of the module is available only in GPRS
transmission mode.
3.2.5. Real time clock
The MT-703 module has its own Real Time Clock (RTC).
This clock provides time reference for the operating cycles of the device, for the timers
as well as for setting timestamps in measurement results which are stored in the
logger. Incorrect setting of the clock may result in faulty marking of the results, thus
causes the possible loss of important data. That’s why it is recommended to set the
clock to UTC time, not to the local time zone.
ATTENTION!!!
The setting of the real time clock must be updated if the module has not
been powered for more than 2 minutes.
The method of RTC setting is described in documentation of the MTM program and in
MT Spooler User Manual.
9
3.3. USB interface
The USB interface built inside the MT-703 module is used for the connecting a
computer during the local configuration of the module.
Because the USB standard provides a possibility of powering the devices connected to
the USB port from the host computer, such mode is also possible in this particular case.
The module can work being powered from the computer connected via an USB cable,
and not using its own battery during the configuration.
To connect a module with a computer you must have an USB cable with A and B
plugins.
Connecting the module to a computer is indicated by the LED marked as “USB”. The
diode lights then continuously.
More information about the usage of USB port for the module configuration is given in
the MTM program user manual.
10
3.4. Powering of the module
The MT-703 telemetry module can be powered only from the built-in set of batteries of
nominal voltage 4.5 VDC. The batteries are placed inside the special holder under the
main circuit board of the module. They are connected to the board by two-wire cable
with a miniature plug. Such design makes easier the battery replacing.
To reduce the initial and operating costs of the module powering, three industry-
standard batteries of R20 type are used. The nominal capacity of such set amounts to
16 Ah, and usually allows for up to 5 years of correct module operation, depending on
the number of transmission cycles. Using the factory-mounted set of batteries allows to
avoid problems arising from an oxidation of contacts during long term operation. It is
recommended to use always the same type of batteries or their equivalent having
similar parameters.
The module can be optionally purchased in a HC version having the batteries of
doubled capacity. The operation time of the module in HC version increases without the
need of supplying new lithium batteries because inside the bigger housing of the
module there is a set of six alkaline R20 batteries, identical as in a standard module.
They provide the double capacity, and ensure the longer operation of the module even
with frequent measurements.
To reduce the battery energy consumption, the module is powered via USB cable from
PC host computer during the configuration procedures. The operation of the module
with external power is indicated by lightning the USB LED. Additionally, during the
module configuration you may set its constant activity option that simplifies the
configuration itself.
3.5. SIM card
The MT-703 telemetry module is equipped with a standard SIM card holder ensuring
the proper connection of a card to the GSM modem. The holder is placed horizontally
on the printed circuit board in the module housing.
The correct placement of the SIM card is important for a proper operation of the
module. The module accepts only SIM cards built in 3.3 V low voltage technology.
11
3.6. LEDs
The LEDs placed on the MT-703 module board simplify the running process of the
module.
The LEDs have strictly assigned meanings:
The GSM LED indicates the operation mode of the GSM module.
The Status LED indicates activity and stand-by states of the GSM module.
The USB LED indicates powering the module from external computer.
The detail description of signaling functions of the LEDs is given in the chapter LED
signaling.
3.7. ACTIVATE button
The ACTIVATE button placed on the module board enables the immediate switching
the module from stand-by to active state. If the module is active, the button switches it
to the stand-by mode with 10 seconds delay after pushing.
Such capability is useful when you want to check the GSM signal level and the module
is in a stand-by mode. After pushing the ACTIVATE button, the module is waken up
for 2 minutes and logins onto GSM network and onto GPRS. During this operations you
can see the current GSM signal level indicated by the STATUS LED.
If the module is in the active mode, pushing the ACTIVATE button causes changing its
status to stand-by for at least 2 minutes. It may cause the loss of events triggered by
T1 or T2 timers, but assures the safe battery replacement.
3.8. RESET button
The RESET button is placed on the bottom side of the module board. It ensures the
hardware reset of the module.
12
In the result of the operation the contents of counters assigned to binary inputs I1 and
I2 are initialized to "0" (cleared).
3.9. The antenna
Connecting the antenna is necessary to provide the proper operation of the MT-703
telemetry module. The antenna should be connected to the SMA (or optionally FME)
socket placed on the bottom side of a module housing.
The antenna type depends on the local strength of GSM signal as well as on the user
needs. The place where antenna is mounted is very important as well. In case of the
low GSM signal it may be necessary to use the directional antennas.
Alternatively, it is also possible to use the antenna located inside the module. To do
this, you have to remove the SMA antenna socket from the bottom side of the module
and mount it in the inner holder. The empty hole in the module housing should be
sealed by the protective cap. This operation is not possible if the FME type socket is
used.
3.10. Module housing
Due to the possible hard environmental conditions, the MT-703 module housing is
manufactured of the high quality plastics. It ensures enough protection (IP67) for the
precision electronic instruments, even in very hard operating conditions. The module
has standard housing manufactured by FIBOX company, catalogue number PCT121207
(or PCT121210 for MT-703 HC version). All specifications of the housing including
material data are available on the manufacturer site www.fibox.com.
You should remember that the protection level provided by the housing depends on its
correct closing and sealing the cable glands located on the bottom side. The housing
which is opened or unsealed does not protect the electronic circuits and batteries
inside.
13
4. Connecting the module
In this chapter we present the recommended configurations for connecting the MT-703
module, providing proper operation of its integrated inputs. There are configurations
used for connecting the module:
Binary inputs I1, I2
Analog inputs AN1, AN2
Supply voltage
4.1. Connecting the binary inputs I1, I2
Due to the permanent activity of the binary inputs as well as the energy-saving
operation of the MT-703 module, the binary inputs require a connection with potential-
free contacts only. Such contacts are placed between the input and the module ground
connectors. Closing the contact is treated as a high state on the input (the negative
logic).
As you can see on the above picture, both inputs have the same reference potential.
This is the electrical mass of the module, i.e., the negative pole of the supply voltage.
The potential on the opened binary inputs is not greater than 2.5 VDC.
4.2. Connecting the analog inputs A1, A2
The analog inputs of the MT-703 module are the voltage type, with the input voltage
range from 0 to 3.3 VDC.
14
Beside the measuring connectors, the analog inputs have the 3.3 VDC supply voltage
connector for powering the sensor, marked as Vcc. The supply voltage is switched on
temporarily during the measurement only. This visibly decreases the energy
consumption, but requires sensors with 3.3 VDC powering. If rated supply voltage of
the sensor differs from this value, it is possible to use an external voltage source.
In case of an external powering, the common ground of an external battery should be
connected to the common wire of analog input, and output signal from the sensor
cannot exceed 3.3 VDC (i.e., the maximum value of the analog input voltage for the
MT-703 module).
4.3. Connecting supply voltage
The MT-703 module is powered by the internal 4.5 VDC battery, consisting of 3 pieces
of 1.5 V R20 alkaline cells (6 pieces in HC version). The total capacity of a new battery
set is estimated as 16 Ah (32 Ah for HC). Depending on the data or SMS transmission
events rate, it allows for an autonomous operation of the module without replacing the
battery even up to 5 years.
The supply voltage is delivered by the cable with an asymmetrical plug, which fits the
socket placed on the module board in one position only.
ATTENTION!!!
Due to use of high capacity capacitor in the supply circuit, the
disconnection of supply voltage does not result in immediate switching
off the module. The activity of the module, depending on its current
state, may still extend from several seconds up to half an hour after
disconnecting the battery. Shorter discharging of the capacitor may be
achieved by pushing the ACTIVATE button.
Due to the specific, energy-saving construction of the module, it is not possible to use
other energy sources than internally mounted alkaline batteries. Especially it is
important not to use the external voltage sources connected via long cables to the
module board. Powering the module from the improper power supplies may cause the
damage of the module.
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5. Running the module
Running the MT-703 module requires several simple initial actions. At first, it is
recommended to connect the module to the PC computer via USB cable, which enables
either the transmission of the configuration data or the powering the module without
using its battery. Then the further actions should be proceeded in the recommended
order:
1. Connecting a GSM antenna. During each switching on, the antenna must be
connected, because it is a load of the transmitter. Even without a SIM card, the
GSM module exchanges information with the available networks to check the
possibility of alarm connections (112).
2. Configuring the basic operational parameters of the module.
3. Mounting a SIM card.
4. Module restart.
5.1. Connecting the antenna
Connecting an external antenna is necessary to proper operation of the module. The
antenna type depends on its mounting and on the strength of the GSM signal in the
antenna location. The antenna should be connected to the SMA (or optionally FME)
socket placed on the bottom side of a module housing.
Alternatively, it is also possible to use the antenna located inside the module and then
the external connection is not required.
5.2. Initial setup
During the initial setup of the MT-703 module the parameters ensuring login onto GSM
network and/or GPRS transmission are configured. To make this configuration properly,
the module must be connected by an USB cable with the PC, which runs the MTM
program. The details of installation, operation and usage of the MTM software with
modules are described in the MTM user manual.
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A proper login onto GSM/GPRS network requires the basic SIM card information and
sometimes the information about APN, to which the module will be login to make a
GPRS transmission. The basic parameters are as follows:
In the General group:
SIM card PIN number
You should enter a PIN code for a SIM card, which is to be placed in the
module (until the card has not been set in the mode enabling its use without a
PIN code).
GPRS usage
Yes - if you want to use a SMS messaging and a GPRS packet transmission
No - if the module has to operate in a SMS mode only.
In the GPRS group (it is visible only if the GPRS usage parameter is set to Yes):
APN name
You should enter the name of APN, which will be used in the GPRS
transmission.
APN user name
You should enter the user name (if required by the network operator).
APN login password
You should enter the user’s access password (if required by the network
operator).
The above given parameters are the only ones required for a proper login the module
onto a GSM/GPRS network. Note that a module configured in such basic manner has
no possibility to send information. This means, that after checking a network login
process you should configure the remain module parameters to enable the required
use of the module.
5.3. Inserting SIM card
One of basic requirements for a proper operation of the module is a proper placement
of the SIM card delivered by the GSM network operator. The network is used for SMS
messaging and/or GPRS packet data transmission.
It is recommended to insert a SIM card while a supply voltage is off, so in the case of
the MT-703 module means not only disconnecting battery and USB cable but also
waiting a time till the module is not active anymore. The SIM card can be placed in a
holder before the initial setup is done. However, you should remember that after two
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attempts of entering a wrong PIN number, the module stops further logins to avoid the
SIM card locking. In such case the card must be unlocked.
A SIM card should be inserted inside the holder on the circuit board of the module. You
must insert it with the contact fields towards the bottom. The cut corner of the SIM
card must remain outside the holder.
The correctly inserted SIM card provides a proper connection between its contact fields
and the holder contacts, in which it has been placed.
5.4. Starting the module
After the initial module setup and the installation of a SIM card you can run the
module. If a SIM card installation has been done without power disconnection (not
recommended), then for the module restart it is enough to push the RESET button. If
the supply voltage has been disconnected during a SIM card installation, its connection
automatically starts the module. The module behaves in identical manner either after
connecting the external batteries or after powering it via an USB cable. The properly
configured module should register itself in a GSM network and possibly login onto a
GPRS network within several seconds. You can observe the login process on the GSM
LED.
The GSM LED blinks according to the following steps in the login process:
1. No communication with the GSM modem
2.The GSM modem is running
3.The USB port of the MT-703 module is ready for communication
4.The GSM modem is registered in the GSM network
5.The GSM modem is logged in the selected APN of GPRS network
Table of contents
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