DualCom GSM is an advanced auto-dialling Digital Communication Device for
secure alarm reporting. It can transmit alarm signals to an Alarm Receiving
Centre using the GSM, (Global System for Mobile Communications) data network or the PSTN (Public Switched T elephone Network). Dualcom can also be
programmed to send SMS (Short Message Services) to a GSM phone.
Where the installation is specified to the EN 50131 and PD6662 standards then
use of the DualCom GPRS is recommended.
DualCom GSM is supplied with a GSM SIM Card that is enabled for ‘Data’ and
‘SMS’ operation.
When DualCom GSM is triggered by the alarm system it initiates calls to the
Alarm Receiving Centre over both communication paths simultaneously . Once
it has received an acknowledgement signal from one path it clears the calls on
the other paths so that the Alarm Receiving Centre receives only one alarm
notification. Test calls are delivered using both paths to test the system fully.
DualCom GSM monitors both communication paths continuously. A fault on
one path is reported to the Alarm Receiving Centre using the other functioning
path. Any Alarm System bell delay is maintained unless both p aths are in fault,
or the Alarm Abort feature is used.
DualCom GSM comes complete with Alarm Abort feature to enable older alarm
systems to comply with the ACPO false alarm policy. Once the system is set,
if a mis-operation occurs and the system is unset within 90 seconds, a restore
on channel 3 or separate code will be sent to the Alarm Receiving Centre. If
programmed, a Tellback will also reset the control panel.
DualCom GSM is available as a stand-alone unit with screw-terminal inputs. A
tamper protected steel box with an integral power supply is also available.
DualCom GSM is housed in an ABS plastic case which protect s the electronics and meets PSTN safety requirements.
DualCom GSM has 8 alarm inputs. This can be expanded to 16 by adding an
Expander Board which also provides 8 outputs.
2
Part Numbers
CS 2000DualCom GSM (+ SIM Card, NVM & CS2058 aerial).
CS 1050Expansion to 16 inputs & 8 outputs.
CS 2057External Aerial with 5m lead (for internal or external use)
CS 2058Box Aerial with 2.5m lead (for internal use only)
CS 2366GPRS/GSM Radio Test Set
CS 1520T amper protected Grade 2 Power Supply .
CS 1530T amper protected Grade 3 Power Supply .
CS 2055Box of 10 NVM, type CS93C66
CS 0300Heavy Duty Lightning/Surge Suppressor
CS 0730Security ADSL Filter
CS 0054Programmer & Downloading software.
SIM Card Socket
Red & Y ellow
Communication LEDs
PSTN T elephone
Connections
GSM Aerial
Connector
DualCom GSM Mk1
Red & Green
Signal Strength
LEDs
Fig 1
SIM Card Socket
Red & Y ellow
Communication LEDs
GSM Aerial
Connector
PSTN T elephone
Connections
Status LED
Red & Green
Signal Strength
LEDs
3
DualCom GSM Mk2
Site Survey
It is strongly recommended that a site survey is conducted prior to installation of a DualCom GPRS to confirm that adequate GPRS signal
strength is available at the site.
Before visiting the site, call CSL Technical Support. See page 9. Ask for a
GPRS signal strength prediction. For this, you will need to have the Post Code
of the site available. This will tell you if there is GPRS radio coverage at the
proposed site.
DualCom GSM is supplied with a Vodafone UK GPRS SIM Card which
can only be used in UK on the V odafone UK GSM and GPRS networks.
If there is no GSM radio coverage at the proposed site, the DualCom’s GSM
and GSM radio alarm reporting paths will not operate.
Use of the CS2366 GSM/GPRS Radio T est Set is recommended to survey the
proposed site for GSM/GPRS signal strength and to locate the point of strongest signal. See Aerial Siting on Page 10 for more information. Make a note of
this point and use it when installing the Dualcom aerial.
Red & Green Signal
Strength LEDs
Status LED
NVM socket
8 input terminals
Socket for
Expansion units
Positive (pull-up) and
0volt source for input
triggering
Fig 2
4
Test Pins
Aux relay
terminals
12 volt power
connections
Fault relay
terminals
PSTN Line
A & B terminals
Reset Pins
A1 & B1
terminals
Installation
1. Site the aerial at the point of strongest signal ensuring that it is within the
protected area. This is usually the highest point in the building and well
away from metal roofs and metal walls. See Page 10.
2. Program the NVM for the system specific requirements or obtain a programmed NVM from your Alarm Receiving Centre. See p age 32.
3. Ensure that a GSM SIM Card is fitted in the DualCom. See page 12.
4. T ot ally power down the control panel mains and battery .
5. Fit the NVM into the 8 pin socket located at the front of the DualCom. See
Fig 1 & 2.
6. Where required, fit the CS1050 Expansion board, See page 14.
7. Connect the input triggers to the DualCom. See page 12 and Appendix 2.
8. Connect to the relays “Fault” and “Aux” as required. See page 15.
9. Connect the aerial to the DualCom aerial lead using the threaded connector
provided. See Fig 1.
10.Connect the PSTN line to the terminals provided under the protective cover.
For security installations, only ‘serial connection’ is recommended for other
equipment that is using the same line . See Pages 22 to 30.
1 1. On the DualCom, connect the ‘12v +’ & ‘12v -’ terminals to the Control Panel
or Power Supply 12 volt output (often called ‘Aux supply’ or ‘DC power’).
See Fig 2 and page 31.
DO NOT supply power to the DualCom directly from the battery because this may bypass the current limited charging circuits found in
many modern power supplies.
The ‘Start’ ‘+’ & ‘-’ terminals next to the 8 input terminals are to assist
input triggering only . These terminals are not the supply connector.
12.Note the SIM Card number, NVM ‘chip’ number (and any security access
numbers) on the site records that will be stored at your office.
13.Reconnect the mains supply to the control panel. The DualCom is now
ready for testing.
5
System T esting
Ensure you have informed your Alarm Receiving Centre that you are
ready to test your DualCom.
Note: If the NVM is an incorrect type, is faulty, fitted incorrectly or has been
incorrectly programmed (including being blank or un-programmed), then the
Red and Y ellow Communication LEDs will flash alternately .
If there is a problem with the SIM Card or the GSM radio module, the Yellow
Communication LED will flash. If there is a problem with the PSTN telephone
line, the Red Communication LED will flash. See Appendix 1.
1. Power up the DualCom, the unit will initialise. This will take 20 seconds with
the GSM LED On, the PSTN LED Off, and the Signal S trength LEDs Off.
When ready, the GSM Status LED will flash on/off slowly and the Signal
Strength LEDs will show the signal strength,
2. T o test both reporting paths to the ARC, momentarily short the test pins on
the DualCom see Fig 1 & 2. This will cause DualCom to send a test signal
to the ARC on both the PSTN telephone p ath and GSM radio path.
Once the test pins are shorted the two communication LEDs will illuminate,
(Red for PSTN and Y ellow for GSM). During communication the LEDs will
flash to indicate the progress of the call, see Appendix 1. When a p ath has
successfully communicated with the ARC, the associated LED will go off.
Both paths will send a test call. The Alarm Receiving Centre should receive
two test calls
Ensure after the test that both LEDs are off; this will mean that the test calls
on both paths are complete.
3. Now trigger all the used inputs on the DualCom. This should be done by
Setting the Control Panel and triggering an alarm condition. If P/A or Fire
circuits are being monitored these should also be triggered.
Note : When alarm calls are made, both GSM and PSTN paths are
activated, but only one alarm call will be received. This will be from
the path that is the first to send the alarm call to the ARC.
4. Contact your ARC to confirm that all signals have been received. Ensure
that all ‘Restore’ signals are received when the DualCom input terminals
return to their quiescent value.
6
System Testing (continued)
5. If the quiescent (non-active) states of the input terminals are incorrect, i.e.
‘positive applied/removed is inverted, then the ARC will report that the Alarm/
Restore or Open/Close is the ‘wrong way round’. To correct this, use the
Self Learning Input feature. See Appendix 2.
6. If you are using SMS signalling, check that the relevent message(s) has
been received on the GSM phone(s).
7. If at any time you wish to cancel a call, short the Reset pins. See Fig 1 & 2.
8. If you are using the Alarm Abort feature, set the Alarm Panel, initiate an
alarm condition and (If the alarm system incorporates bell delay this will be
overridden) then unset the alarm system within 90 seconds.
Check that the alarm abort signal has been sent to the ARC and, if selected,
the alarm system has reset.
9. Remember to note the SIM Card number , NVM ‘chip’ number (and any security access numbers) on the site records that will be stored at your office.
10.Your DualCom is now fully tested.
7
Troubleshooting
Q. What if there appears to be random triggering of the DualCom ?
Ensure that 0 volts is common across all parts of the alarm system.
If the DualCom receives its power from a Power Supply that is additional
to the alarm system, ensure that the 0 volt connection on the additional
power supply is connected to the 0 volt connection on the alarm system.
Q. What if the Digital Communicator signal is not received by the Alarm
Receiving Centre ?
Check that the NVM is fitted and has been correctly programmed, i.e. PSTN
enabled, correct telephone numbers.
Check that the PSTN line is properly connected. Check with a meter that
approximately 50 volts DC is present across the PSTN terminals marked A
and B. Connect a telephone to the PSTN line and make a call to ensure
that it is fully functional. Remove telephone after test.
Ensure that ‘call barring’ to the ARC Receiver telephone number has not
been set on the PSTN line used by DualCom by using a phone and dialling
to the ARC receiver(s). Remove telephone af ter test.
Disconnect any other equipment that is using the same PSTN line to ensure that it is not inhibiting the DualCom.
Check that when the DualCom is triggered, the voltage across the A and B
terminals drops to between 6 and 12 volts DC.
See Appendix 1 for Line Monitoring indications. These will help diagnose
line problems.
Q. The Fault Relay does not operate so that EN Standards can be met ?
Where the installation is specified to the EN 50131 and PD6662 standards
then use of the DualCom GPRS is recommended.
8
Troubleshooting (continued)
Q. What if the GSM signal has not been received by the Alarm
Receiving Centre ?
Check that the NVM is fitted has been correctly programmed.
Check that the SIM Card is fitted has been correctly programmed
i.e it is enabled for ‘Data’.
Check, using the Signal Strength LEDs (Red & Green) that the radio
signal is sufficient and the GSM path status = OK.
Check with a meter that the voltage supply to the Dualcom is 13.6v or
more and does not dip when the DualCom is signalling.
See Appendix 1 for GSM fault indications. These will help diagnose
radio path problems.
Technical Support & Web Site
If you have installed the DualCom in accordance with these instructions, checked
all the above points but are still experiencing problems you can contact your
DualCom supplier.
In UK, DualCom installation, programming, operation or other questions may
be addressed to:
The CSL Technical Support Desk:
T el:01895 474 444
Email:support@csldual.com
Hours:08.00 to 18.00 weekdays
The CSL web site: www.csldual.com contains the latest copies of all manuals
for all CSL products. Please ensure that you are working from the latest version. You can also download associated information and software samplers.
Sales, shipping and contact information is here too.
For Vodafone GSM/GPRS radio signal strength predictions in UK using the
postcode of the proposed installation site, use the CSL web site link:
http://www.csldual.com/coverage Select Map Type = Mobile Data Map, and
Mobile Data Coverage = St andard Services.
9
Aerial Siting
ALWAYS do a site survey to find an area of strong signal before inst allation.
Installing DualCom with a weak signal is bad installation practice. The DualCom
is likely to suffer signal failure, causing wasted site vists, wasted time & money .
The aerial should be mounted vertically at the point of strongest signal. This
is usually the highest point in the building (often the loft area).
Large metal structures can affect radio signals. Avoid installing the aerial
directly under metal roofs or within metal skinned buildings because this willreduce the signal strength and may inhibit operation completely . If this
is unavoidable, the strongest signal will be found away from the metal roof or
close to large external windows or skylights.
Avoid installing the aerial close (2 metres) to cable runs, ducting, structural
metalwork, metal pipes, water tanks and electronic equipment, e.g. photocopiers, fax machines etc. These can have similar effects as metal roofs.
The Signal Strength LEDs on the front of the DualCom (see Fig 1 & 2 and
Appendix 1) will give an indication of signal strength that DualCom is receiving
from the GSM Network. Note: These will not work with an unprogrammed NVM.
Green On:High Signal Strength
Red & Green On:Medium Signal Strength
Red On:Low Signal Strength
Reliable operation is unlikely with a low signal strength. If the display shows
that the signal strength is low, you should improve the signal strength. This
may be achieved by repositioning the aerial. The GPRS aerial lead should notbe cut or extended, therefore repositioning the aerial may require that the
DualCom is also repositioned.
A site survey should provide information on the availability , signal strength and
interference status of all radio Base St ations in the surrounding area.
The CS2366 Radio T est Set is ideal for surveying a site. This handheld unit can
check the availability , signal strength and interference status of all surrounding
Base Stations. In addition, it will identify the best location for a DualCom GPRS
aerial within the building, it will help to avoid sources of interference and can
confirm the availability of a GPRS service at the proposed site.
Where a CS2366 Radio Test Set is unavailable, a DualCom GPRS, aerial and
fully charged battery may be used to locate the point of strongest signal. Ensure that the DualCom is fully operational then walk around the site carrying the
equipment observing the signal strength display .
10
Aerial Siting
This ‘DualCom, aerial & battery’ method can not provide information on the
availability , signal strength and interference status of all radio Base S tations in
the surrounding area. Use of the CS2366 Radio T est Set is recommended.
Alternatively, a Vodafone mobile phone may be used to locate the point of
strongest signal. The signal strength indicator is normally a bar or line at the
side of the display on the mobile telephone. Note: The mobile phone MUSTuse the Vodafone network. A mobile phone that uses a different radio network will NOT show the correct signal strength.
This ‘mobile phone’ method can not provide information on the availability , signal strength and interference status of all radio Base St ations in the surrounding area. Use of the CS2366 Radio Test Set is recommended.
When you have identified the point of the strongest signal, make a note of this
point and use it when installing the DualCom aerial.
Remember: It is always easier to find the point of strongest signal before the
equipment is fitted to a wall. Moving aerials, cables, trunking etc. after installation is wasted time and effort.
11
Sim Card
DualCom GSM is supplied with a suitable GSM SIM Card. Check if a GSM SIM
Card has already been fitted in the DualCom GSM.
The SIM card has a number printed on it. This is the SIM Card Serial Number .
It is recommended that this number is recorded on the site records that will be
stored at your office.
DualCom GSM Mk1.
Slide open & lift out the grey
cover on the top of the
DualCom. Slide the silver bar
to the ‘open’ position and lift
the hinged flap. Wipe the
gold contacts with a clean
tissue or cloth. Do not
touch the the gold contacts with fingers. Slide
the SIM card into the slot
on the hinged flap with the
cut corner up so that the SIM
Card gold connectors will
face down when the flap is
lowered.
Replace the grey cover. Lower the flap. Slide the silver bar to the
‘lock’ position.
SIM Card
carrier
GSM DualCom Mk2 SIM Card
SIM Card
Eject button
Fig 4
Cover
Silver Bar
DualCom GSM Mk2.
Using a ball-pen or pencil, push the black
or yellow ‘eject’ button. The SIM Card Carrier will slide out of the DualCom. Fit the
SIM card into the SIM Card Carrier with
the gold contacts uppermost. Wipe the
gold contacts with a clean tissue or
cloth. Do not touch the the gold contacts with fingers. Slide the SIM Card
Carrier into the DualCom. Ensure it is
pushed fully in.
Gold
Connectors
Locked
Open
GSM DualCom Mk1 SIM Card
Fig 3
Cut Corner
Hinged
Flap
12
DualCom Mounting
DualCom may be mounted in a boxed power supply or other suitable case. The
CS1520 and CS1530, grade 2 and 3 power supplies are ideal for this. The case
has mountings and screw retainers for a DualCom, space for 7 amp/hour battery(s)
and plenty of room for wiring.
Alternatively, any suitably sized case that meets the security requirements
may be used. DualCom has two mounting lugs fitted to its case for screw
fixing.
Security
Note: Up/downloading security features are NOT activated when
DualCom is supplied. Use of one or more of these features is recommended.
DualCom should be protected from assault and tampering by being fitted inside
a tamper protected enclosure that is part of the alarm system.
The DualCom has two independent methods of stopping unauthorised up/
downloading. These security features are for up/downloading only . They do not
operate when the NVM is removed from the DualCom and is plugged into an
NVM Programming Socket connected to a PC.
A ’call-back’ GSM number may be programmed so that the DualCom always
calls to its preset ’call-back’ engineering number whenever up/downloading is
requested.
A 6 digit access code may be programmed so that the DualCom always
requires this code whenever up/downloading is requested. CSL strongly rec-
ommend that this feature is used.
In addition, up/downloading can be inhibited when the alarm system is in the
set state.
Note: Up/downloading security features are NOT activated when
DualCom is supplied. Use of one or more of these features is recommended.
13
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