User manual
DESCRIPTION Page 37 | 41
Operating guide for Alarm Receiver DECRYPTA
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MCDI Security Products Inc.. Internet: mcdi.com
7055 Jean-Bourdon Avenue, Montreal, QC, Canada H4K 1G7 Telephone: +514-481-1067 Fax: +514-481-1487
Dot matrix Printer type. Mostly Parallel interface and impact printers. Commonly used to print directly from
DECRYPTA
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. Support a line-by-line printing.
Drivers Software instructions used by kernel of operating software to direct or transform the signal of an
attached peripheral such as alarm receiver card Exprecium or DECRYPTA
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USB port.
DTMF Dual tone multi frequency. Summation of the amplitudes of two sine (cosine) waves of different
frequencies. Example: Keying '1' will send a tone made by adding 1209 Hz and 697 Hz to the
other end of the line. Formats like Contact ID are of DTMF type.
Earth Ground Any device connection or a grounding rod used to connect devices such as DECRYPTA
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to earth. Such a connection is used as a sink for electrical transients and possibly damaging
potentials, such as those produced by a nearby lightning strike.
E
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Exprecium
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mode. Advanced programming for Exprecium
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generation of receivers. Common to
MCDI Exprecium PCI cards and Decrypta
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. Suitable with MCDI Catapult and Extrium receivers.
Event MCDI uses this terminology to designate a string of characters or a packet that amounts to a
signal sent from an alarm panel.
Firmware Programs or instructions stored in a PROM. MCDI uses the term firmware to refer to the software
residing on a PROM or EPROM.
FSK Frequency shift keying. In digital communication, an audio frequency is used for 1 and a different
frequency is used to signal 0
FTC Fail to close. Event created when a system remains disarmed at preseted time.
FTO Fail to open. Event created when a system remains armed at preseted time.
GCI 1800/1900 GSM backup interface by MCDI. Iinterfaces GSM phone signal to PSTN (RJ11 plugs) and
transfers ring to let alarm receivers such as Decrypta and DECRYPTA
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receive alarm
sent over a GSM network. 900/1800 are the frequencies used is most of the planet. 1900 is
mostly used in North America and parts of South America.
Ground Earth ground.
Ground Loop An alternative path in which current can travel. Ground loops can produce noise.
Ground Lug A lug used for connecting Decrypta alarm receivers to earth ground. Decrypta receivers should
be connected to earth ground to protect them from transient potentials such as nearby lightning
strikes.
GSM Global System for Mobile commincations.Wireless phone system used in most parts of the world.