CTE Coster GSM 712 User manual

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T 324 - GSM 712 Eng. 04.01.01
We reserve the right to make changes without notice
COSTER
T 324
04.01.01
GSM DESK-TOP MODEM
GSM 712 Eng.
1.APPLICATION
GSM 712 modem is used in “TELECOSTER” telemanagement systems for transmitting data to and from remote
plants (e.g. boiler plants) where GSM modems are installed.
2.FUNCTIONS
GSM712isaGSMdualbandmodem(900/1800MHz)withatransmittingspeedadjustablefrom1200to9600bps
both in non-transparent mode (with error correction) and transparent (without error correction).
It supports AT+ controls in conformity with ETSI GSM 07.07 standard.
It incorporates a self-diagnosing function that indicates the GSM network signal strength.
The digital interface conforms to ITU-TV.24 and V.28 Recommendations.
3.REFERENCE STANDARDS
The protocols are based on the following standards:
• ETSI GSM 07.07 : European digital cellular telecommunication system (phase 2). At command set for GSM
Mobile Equipment.
• ETSI GSM 07.05 : Europeandigitalcellulartelecommunicationsystem(phase2). UseofDTE/DCEinterfacefor
Short Message service and cell broadcast service.
• ITU-T V.25ter : "serial asynchronous automatic dialling and control"
• Uses GSM 900/1800 MHz digital telecommunication networks
• Communication with GSM remote modems
4.TECHNICAL DATA
• Transmission data:
Data format asynchronous start-stop
Character format 7/8 data bits, 1/2 stop bits,
parity odd/even/none
Transmission speed 1200 ... 9600 bps
Transmission standard V.22bis, V.32
Transmission mode full duplex
Interface speed 300 bps ... 115.2 Kbps
Data Terminal Equipment interface conforms ITU-T V.24/V.28
tested on female connector DB25 (ISO.2110)
Data Terminal Ready the OFF status of DTR prevents
the transmission/reception of the modem
Traffic control RTS/CTS
Power RF output (max) 33 dBm ±2 dB (900)
30 dBm ±2 dB (1800)
RF antenna FME connector
• Electrical & mechanical
Power supply external transformer (supplied with modem)
Input : 230 V ~ ±10 %
Output : 15 V ~ 200 mA
or: 12 V –
Protection self-reset 0.5 A fuse
Constructionstandards ItalianElectrotech.Committee(CEI)
Ambient temperature:
- operation – 20 ... + 55 °C
- storage – 25 ... + 70 °C
Dimensions 130 x 135 x 27 mm (W x D x H)
Weight 0.2 kg
TO SEE A SUITABLE REPLACEMENT PRODUCT
DISCONTINUED PRODUCT

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T 324 - GSM 712 Eng. 04.01.01
We reserve the right to make changes without notice
COSTER
5.FRONT PANEL – DESCRIPTION OF LEDS
1 2 3 4 5 6
ON TD RD DCD
DTR
GSM
FalcoGSM
7
1-ON :green LED: lit indicates that modem powered; off indicates not powered.
2-TD :(transmit data) flashing red LED indicates data transmission.
3-RD :(receive data) flashing red LED indicates data reception.
4 -DCD : (data carrier detect) red LED lit indicates presence of the carrier signal (modem connected).
5 -DTR : (dataterminalready)redLEDlitindicatesthatcomputerconnectedandreadyforreception/transmission
of data.
6 -GSM: red LED lit indicates modem is seeking GSM carrier; slow flashing (every 2 seconds) indicates that
connected to GSM carrier but not operative; rapid flashing (every 1 second) indicates incoming call
active; Off indicates the absence of the GSM carrier signal.
7:slot for inserting SIM card
6. REAR PANEL – DESCRIPTION OF MICROSWITCHES
1:connector for input RFantenna.
2:female connector RS232.
3:microswitches “SW1” for configuring modem hardware:
switch - 1 : ON = RTS always ON
OFF = RTS follows the request state from RS232 (default)
switch - 2 : ON = DTR always ON (DTR LED remains Off)
OFF = DTR follows the request state from RS232 (default)
switch - 3 : ON = Loudspeaker disabled
OFF = Loudspeaker enabled (sounds only to signal an incoming call “RING”)
(default)
switch - 4 : not used
4:connector for external power.
1 2 3 4
V.24
15V - 50Hz
1234
SW1

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T 324 - GSM 712 Eng. 04.01.01
We reserve the right to make changes without notice
COSTER
7. CONNECTIONS
– Female connector RS232.
The RS232 female 25-pin D connector (DB25) conforms to recommendation ITU-T V. 24/V.28.
Permits connecting to the telemanagement computer installed in the offices of the telemanager or in those of
supervisory staff.
– Connector for RF antenna.
Theconnectionofthemagneticantenna,suppliedwiththemodem,must becarriedoutbyscrewingupastightly
aspossible the threaded lockingnut, located at theend of the antennacable, on the GSMconnector on the rear
panel.
WARNING: Ensure that the modem is switched off before connecting or disconnecting the antenna.
– Power supply connector
Use the transformer supplied with the modem. Insert the cable connector in the 15V- 50 Hz socket on the rear
panelofthemodem.TheEuropean plugofthetransformeris theninsertedintotheU.K.3-pinadaptor &thelatter
is plugged into the main 3-pin socket.
Eachtimeitisswitchedonthemodemcarriesoutatestlastingabout20secondsattheendofwhichthe“ON”LED
remains lit and the modem is ready to function.
Asanalternative,powerthemodem with a 12VDCsupply;WarningCorrectPolarity Must Be Observed inthis
case the centre pole of the power connector is the positive of the12 V input.
– Connector SIM card.
On the front panel is the slot for inserting the SIM card in the modem.
TheSIMcardmustbeinsertedwiththegoldsidefacingdownwardsandwiththecut-offcornerfacingtowardsthe
right (as in the diagram), pushing it until a light click is felt.
To remove the SIM card depress the red key lightly (see diagram) which will then release the SIM card for
extraction.
WARNING: UNDER NO CIRUMSTANCES MUST THE SIM CARD BE INSERTED OR REMOVED WHILE THE
MODEM IS SWITCHED ON. SUCH OPERATIONS MUST BE CARRIED OUT ONLY WHEN THE MODEM IS
SWITCHED OFF.
8. SIM CARD It is advisable to purchase your SIM card from your chosen GSM network service provider’s agent.
When purchasing it is indispensable to:
– ask for a card enabled for the transmission and reception of data and fax.
Usually, the network operator will supply a SIM card with three telephone numbers:
- a VOICE number to be used for voice TELEPHONE calls.
- a FAX number to be used for fax communications.
- a DATA number to be used for telemanagement.
– ask for the following modes for communication data:
- Asynchronous – “TRANSPARENT” (error correction disabled)
- Asynchronous – “NON TRANSPARENT” (error correction enabled)
Before installing the SIM card in the modem it is essential to disable the PIN code on the card.
This can be done by inserting the SIM CARD in a cellular telephone and altering the security settings of the SIM
using the phone menu system.
Beforefirstusingit,configuretheSWC701telemanagementprogramwiththecommunicationmode(transparentor
non–transparent) as chosen for the card.
SIM card
Insert SIM card
Red key

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T 324 - GSM 712 Eng. 04.01.01
We reserve the right to make changes without notice
COSTER
D 33200
9. SIGNAL QUALITY
Using the SWC701 telemanagement program and carrying out “AT” commands it is possible to know the network
signal strength:
Quality of network signal: control : AT+CSQ reply: (level),(ber).
Level : up to 14 low level possible connection problems.
Over level 14 good.
Ber : (BIT error rate), 0 in good transmission conditions; 99 indicates signal
cannot be detected.
10. OPERATION
Every time it is switched on, and after inactive periods of more than 30 Seconds, GSM 712 carries out a 2-second
self-test to check the GSM signal presence.
The result of the test is indicated by LED “GSM” (5.7) on the front panel which:
- flashes every two seconds to indicate detection of GSM network signal;
- flashes every one second to indicate detection of GSM network signal and of incoming call;
- completely Off indicates GSM signal not detected.
At the end of the test the modem is ready to function and the “DTR” LED (5.5) is lit provided the telemanagement
program SWC701 has been opened.
Connection with remote modems is indicated by the lighting of the “DCD” LED (5.4).
In case of error, failed connection or incorrect operation, the modem provides the program with the necessary
indications for identifying the fault.
11. ACCESSORIES
Each GSM 712 modem box contains:
– 1 GSM 712 modem
– 1 user instructions
– 1 RF Dual Band antenna
– 1 mains power supply transformer & U.K (Schuko to 3 pin) mains adapter
COSTER
CONTROLLI
TEMPERATURA
ENERGIA
COSTER
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