Service manual AlphaCom XL transceiver Rev. 1.4 10-08-2011
Blz. 15/74
To enable the PSTN tamper loop option jumper J19 must be placed over pin 1 and pin 2. This can be done
by remving the jumper of J19, which is situated directly above the CMK RJ11 connector on the AlphaCom
XL board. The most upper pin (pin 3) on J19 must be left open.
Also the PSTN tamper loop option must be enabled in the software. See page 35.
The backup telephone line output (TEL) can be used to connect an external PSTN line or GSM interface.
This connection can be used for backup purposes, in case the IP connection with the monitoring station fails.
When the alarm control panel now sends out a message, it will be redirected immediately to the PSTN
output or GSM interface. The difference between the integrated GSM module and external GSM interface is
that the external GSM interface uses a the audio channel op de GSM network and the integrated GSM
module sends data packages via GPRS (IP over GSM) to the central station which is a much more reliable
backup source. A second advantage is that when sending data packages via GPRS, the backup messages can
be received by the same IP receivercard in the central station.
When nothing is connected to the PSTN output, the control panel dialer will return a Fail to Communicate
(FTC) message when the maximum number of dial attempts has been reached.
When using the GSM/GPRS backup facility, place a SIM card in the slot of the GSM module. The SIM card
placed must support GPRS. The SIM card used in the integrated GSM module was designed to work with
various network providers. Several providers in the Netherlands were tested but we cannot guaranty that it
will support all providers.
Some network providers (in the Netherlands for example Telfort) do not have there own GSM network and
use the network and GSM/GPRS antennas of other providers. Telfort uses mainly the KPN network but can
also use other networks. To be able to work with these providers the „
roaming
‟ option must be enabled in
the programming. In the default programming of the AlphaCom XL roaming has been
purposely disabled
to ensure installations placed close to the border will not roam and use network providers in another country
thus causing extra high costs for the end-user.
The PIN-code on the SIM card must be set correctly before placing the SIM card in the GSM module. To set
the PIN-code correctly install the SIM card in a mobile telephone and set the PIN-code.
Finally a LAN connection has to be made. Connect the ALPHACOM XL to a free LAN output of a router or
switch. The ALPHACOM XL uses a 10Mbit/s connection and it is preferred to use a “straight through”
CAT5 cabling. When making a custom-made LAN cable, it is strongly recommended to use the standard
color scheme for the wiring, see appendix B.
Analog inputs
The AlphaCom XL can be triggered in many ways. One of the ways to trigger the AlphaCom XL is to
activate the 12 inputs.
In the factory default settings the inputs of the AlphaCom XL are configured as normal analog inputs. Inputs
1 to 8 (not inputs 9 to 12) can be also be configured as „power activated‟ inputs. In this case the jumpers J33
to J42 must be set to the correct (pin 2 and 3 must be connected) settings. The input is now connected to a
ULN2803 open collector driver through a 1K series resistor.
This means: if a power supply is connected to the input, the input is seen as closed (if the input is
programmed as normally closed). When the power is disconnected (or a 0V is applied) then the input is ssen
as open.
The power that can be connected to the input is 12-16VDC. The absolute maximum power that can be
applied is 24VDC.
Inputs 9 to 12 are always „normal‟ analog inputs an cannot be used as „power activated‟ inputs.
