User manual
Glossary Operating guide for Alarm Receiver Exprecium D 48|52
MCDI SECURITY PRODUCTS INC. 7055 Jean-Bourdon Montréal Québec Canada +514.481.1067 www.mcdi.com ed@mcdi.com
HUB USB hub. Device used to link several USB client units to a USB port.
ISA Industry Standard Architecture. Slower 8 or 16-bit BUS (data pathway). TLR and TLR+ receiver
card are of this type. Fading out of the market.
Kiss off Tonality or signal sent by alarm panel or receiver to inform corresponding device of the end of
session. Some formats do not require handshake but most do.
LAN Local-Area Network. Connection of workstations, PCs or other LANs to enable data access and
device sharing.
Late to close LTC. Event created by arming a system after specified time.
Late to open LTO. Event created by disarming a system after specified time.
Listen-in Ability to hold the phone line and listen and sometimes talk on the phone line. This feature is
format related.
mA Milli-ampere Unit of current that is 1/1000 of an Ampere. Measure of current needed to power D4
Modem The name combines "modulate" and "demodulate". Refers to its ability to transmit and receive
data superimposed on a carrier frequency. In alarm industry usage, a modem is a type of
communication. FSK formats are modem types.
Modem3a
2
Alarm format owned by Radionics company. Built-in D4
and Exprecium
2
. An agreement between
the user and Radionics is required to activate.
mV Millivolt. Unit of electrical potential. 1/1000 of a volt.
NVRAM Non volatile memory. Holds memory without power. Memory with clock functions in use in D4.
Can be field reprogrammed.
Open In alarm industry, the act of disarming a system
Operator Alarm Central operator
OS Operating System such as Windows XP, Linux.
Output In context referred as 1) signal sent by alarm receiver to alarm panel over phone lines during a
communication 2) signal sent by alarm receiver to PC over USB port or Serial port.
Parity bit A redundant bit. Added to a record to allow alarm receiver to detect an odd number of bit errors
in said record.
Parallel port On D4, the printer port – DB25. Transmits the bits of a byte on eight different wires at the same
time (eight bits at the same time).