User manual

DESCRIPTION Page 39 | 41
Operating guide for Alarm Receiver DECRYPTA
3
MCDI Security Products Inc.. Internet: mcdi.com
7055 Jean-Bourdon Avenue, Montreal, QC, Canada H4K 1G7 Telephone: [phone] Fax: [phone]
NVRAM Non volatile memory. Holds memory without power. Memory with clock functions in use in
DECRYPTA
3
. 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 refered 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 DECRYPTA
3
, the printer port – DB25. Transmits the bits of a byte on eight different
wires at the same time (eight bits at the same time).
PCI Peripheral Component Interconnect. A 32-bit local bus which is faster than ISA bus. Exprecium
and Exprecium
2
are of this type. Common in computer made since 2000.
Peripheral Auxiliary equipment such as DECRYPTA
3
attached to a PC.
Pile Memory stack. Piling of events. Events are stacked in order memory. From the oldest to the
latest. Usually, latest erases the oldest when memory is full
Power Supplies Energy source for an electrical device. Can be AC powered through a standard wall socket, DC
powered through batteries or solar panel.
PPS Pulse per second. Signal sent by alarm panel. 10 pps, 20 pps, 40 pps indicates the frequency (or
number) of pulses per second.
PSTN Public system telephone network
Pulse Type of communication
Receiver Alarm receiver such a DECRYPTA
3
external receivers or Exprecium cards for PC
Relay A power switching device that completes or interrupts a circuit by physically moving electrical
contacts into contact with each other. Used in DECRYPTA
3
to trigger an external device
such as strobe light, dialer, siren.