Coster GSM 822 User manual

1
T 330 - GSM 822 Eng. 10.12.01
We reserve the right to make changes without notice
COSTER
REMOTE DUAL BAND
GSM MODEM
GSM 822 Eng.
• Uses GSM 900/1800 MHz digital telecommunication networks
• Communicates with central desk-top modems (e.g. MCV 711 & GSM 712)
1.APPLICATION
GSM822modemisusedin“TELECOSTER“telemanagementsystems,installedatremotesites(e.g.boilerplants)
for communicating data to and from the central site.
2.FUNCTIONS
GSM 822 modem is an E-GSM dual band (900/1800MHz) modem with a configurable transmission speed of 2400
to 14,400 bps both in non-transparent (with error correction) and transparent (without error correction) modes.
The minimum communication speed over the network is 2400 bps so it cannot be called up by a modem that
supports lower network rates, as, for example, COSTER MCT 710 desktop modem.
Supports AT+ commands in conformity with standard ETSI GSM 07.05 & 07.07 & V.25ter.
The digital interface conforms to Recommendations ITU-TV.24 & V.28.
It is equipped with a self-diagnostic function that indicates when GSM carrier detected.
3.REFERENCE STANDARDS
The protocol specifications 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 : European digital cellular telecommunication system (Phase 2). Use of DTE/DCE interface for
Short Message service and cell broadcast service.
• ITU-T V.25ter : "serial asynchronous automatic dialing and control".
T 330
10.12.01
4.MODEM ACCESSORIES
Code Description
APA 812 5 m cable for extending antenna modems GSM 712 and GSM 822
ACM 822 Serial cable for direct connection to PC
ALM 688 Back-up power supply
C BUS
TO SEE A SUITABLE REPLACEMENT PRODUCT
DISCONTINUED PRODUCT

2
T 330 -GSM 822 Eng. 10.12.01
We reserve the right to make changes without notice
COSTER
0RxTx0C0CC CLL NN
1-GSM dual band modem
2-PG 7 type cable entry gland
3-external antenna
4-transformers
5-terminal block for electrical connections
6-PCBsupportingmodempowersupplycircuitsandRS232/C-Businterface
7-IP 54 case
8-mains power LED
9-transmission data LED
10 - reception data LED
11 - holes for wall installation
12 - cover securing screws
5.TECHNICAL DATA
• Transmission data:
Data format asynchronous start-stop
Character format 8 data bits, 1 stop bit,
parity odd/even/none
Transmission speed 2400 ... 14400 bps
Transmission standard V.24, V.25
Transmission mode full duplex
Interface speed 300 bps ... 115.2 Kbps
DTE interface conforms ITU-T V.24/V.28 tested on
female connector 15 pins SUB D
Traffic control RTS/CTS
Power RF output (max) 33 dBm ±2 dB (900)
30 dBm ±2 dB (1800)
Antenna RF SMA connector
• Electrical & mechanical
Power supply 230 V ~ ±10 %
Frequency 50 ... 60 Hz
Consumption 5 VA
Protection excess voltage self-reset fuse
Electrical protection IP 54
Constructionstandards Italian Electrotech.Committee (CEI)
Ambient temperature:
- operation – 20 ... + 55 °C
- storage – 25 ... + 70 °C
Dimensions 195 x 97 x 250 mm (W x D x H)
Weight 1.40 kg
6.FRONT PANEL
7.WIRING DIAGRAMS
12 3
8
9
10
4
6
7
5
2
12
•Without back-up power supply • With ALM 688 back-up power supply
L - N - mains electric power supply (230 V~)
L1 - N1 - electric power supply from mains or back-up power supply (230 V~)
D - G - direct current from back-up power supply (18 V–)
S-double pole isolation switch (recommended)
RS232 - RS232 serial output for connection to Coster devices having RS232 serial input.
C-BUS - parallel output for connection with Coster devices having C-Bus parallel input.
11
GSM 822
DG0RxTx0CC
N
230 V ~
L
0
C BUS
0RS232
OUTPUT
L1 N1
LN
GSM 822
DG0RxTx0CC
N
230 V ~
L
0
C BUS
0RS232
OUTPUT
L1 N1
LN
ALM 688
DGDU
L1 N1 LN
LN
230 V ~
S

3
T 330 - GSM 822 Eng. 10.12.01
We reserve the right to make changes without notice
COSTER
8. INSTALLATION & CONNECTIONS
Themodemmustbesitedinadryspacewithatemperaturenotabove55°Candprotectedfromanypossiblewater
leaks.
It must be mounted on a wall with the antenna sited in a zone covered by the telephone network provider chosen:
• Ensure that the wall where the modem is to be mounted is in a zone covered by the chosen network provider.
This can be checked by locating a phone in the proposed position & checking the on screen display for signal
strength. Should there be no signal, try mounting the modem on another wall, or arrange for the antenna to be
installed in a different place from the modem using a suitable extension.
• Unscrew the four screws (6.12) that secure the cover to the base and separate the two parts.
• Fix the modem to the wall using the holes provided (6.11).
• Carry out the electrical connections strictly in accordance with the wiring diagrams given above and with the
regulations in force, using PG7 cable entry glands (6.2) .
• It is advisable not to insert more than two cables in a single terminal of the modem.
• For the power supply connections to the modem the use of stranded copper cables of at least 1.5 mm2cross
section is recommended.
•For thecommunication ring(C-Bus) use anormal twin-corecable ofat least1mm2crosssection;it isimportant to
respect the polarities and to this end it is advisable to use wires having different colours.
• Check with a multimeter that there are no short circuits or breaks in the power wiring or C-Bus circuit.
• Power up (230V~) and check with a multimeter across terminals L - N and L1- N1.
• Remove power, replace cover on base and secure it with the four screws (6.12).
9. SIM CARDWARNING: whenordering theGSM 822modem thename ofthe telephonenetwork providerto beused shouldbe
specified so that the modem is configured correctly on delivery.
• Purchase of SIM card
It is advisable to purchase your SIM card from your chosen GSM network service providers’ agent.
When purchasing it is indispensable to:
– ask for a card enabled for the transmission and reception of data and fax.
Usually, the telephone 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 communication.
- 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)
Note: ItmaybepossibletoobtainaSIMcardwithonenumber(only dataservicesenabled). Contactyournetwork
provider for details.
• Inserting the SIM card in GSM 822
WARNING : Before inserting the SIM card in GSM 822 modem it is indispensable to disable the PIN code of the
card.
TocarryoutthisoperationuseaGSMcellulartelephone:inserttheSIMcardconcernedinthecellular
telephone and then, following the instructions for this telephone, disable the PIN code of the SIM
card.
The operations to be carried out to install the SIM card in GSM 822 are:
– ensure that the GSM 822 modem is switched off. UNDER NO CIRCUMSTANCES MUST THE SIM CARD BE
INSERTEDORREMOVEDWHILSTTHEMODEMISSWITCHEDON. THESEOPERATIONSMUSTBECARRIED
OUT WITH THE MODEM SWITCHED OFF.
– removethetransparentcoverbyfirstunscrewingthefourscrews(6.12)thatsecureittothebaseandseparatethe
two parts.
– loosenthesecuringscrew(9.3)and,usingthefingerofonehand,liftupthemodemsoastobeabletoaccessthe
front panel of the device (as shown in 9.1and 9.2).
– using a pointed object, press the yellow button (9.8) in order to extract the holder for the SIM card.
– insert the SIM card in the holder provided making sure that the card is the correct way up.
– re-insert the card holder in the modem and switch on the power.
antenna
side
1-normal position of GSM 822
2-raised position of GSM 822
3-modem securing screws
4-holder for SIM card
5-SIM card
6-red LED indicates when GSM carrier detected
7-antenna connector
8-yellow button for extracting SIM card holder
1
2
3
84
5
67

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T 330 -GSM 822 Eng. 10.12.01
We reserve the right to make changes without notice
COSTER
51
10 6
15 11
PIN USE DESCRIPTION
1 DCD Data Carrier Detect
2 TX Trasmission Data
6 RX Receive Data
7 DSR Data Set Ready
8 DTR Data Terminal Ready
9 GND Signal Ground
11 CTS Clear to Send
12 RTS Request to Send
13 RI Ring Indicator
4 MICROPHONE (+)
5 MICROPHONE (–)
10 SPEAKER (+)
15 SPEAKER (–)
14 RESET
3 RESERVED
AUDIO SERIAL RS-232
• GSM network field strength indicator
The red LED on the front panel of GSM 822 (9.6) indicates the status of GSM 822 modem:
- LED unlit (Off) : modem not ready
- LED lit (On) : carrier detected
- LED flashing slowly : searching for carrier
- LED flashing rapidly : modem transmitting
To know exactly the network field strength you must:
– connect GSM 822 to a computer (with SIM inserted and powered up) and
– by means of a communication program or using SWC 701 telemanagement program, send to modem the
command "AT+CSQ";
– then read the reply from GSM 822:
- reply: from 14 to 31 = the signal should be sufficient.
- reply: from 0to 13 and +99 = the signal unlikely be sufficient.
10. CONFIGURATION MODEM
Ifessentialitispossibletore-initialisethemodemsoastoreconfigureitcompletely,forexample,whenyouchange
telephone network provider and, as a consequence, you have to change the data transmission mode (from
“Transparent” to “Not transparent” or vice versa).
– Disconnect the serial port connection of the GSM dual band modem (6.1) from the interface base (6.6);
–Connecttotheserialportofthemodem(nowfree)acomputeronwhichisinstalledwiththeSWC701telemanagement
program using an ACM822 serial cable ;
– Go to “SETTINGS – RS232” of SWC 701 program, configure correctly the serial port used, the type of modem
connected (in this case select “GSM 822”) and the correction of errors according to the data transmission mode
used (9600 bps transparent or 9600 bps not transparent);
– Press the “SAVE” key; at the end of the operations the modem will be correctly configured for “TELECOSTER”
telemanagement.
– Restore the original connections.
11. SERIAL 15 PINS SUB D CONNECTOR
The serial connector used in GSM 822 is of the 15 pins SUB D type. The connections of each pin are given in the
following table:
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D 33201
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