electro-mechanical relay assembly.
1.2.6
Security Lighting Interface
An interface shall be provided for control of the security lighting system
as specified in Section 16528A EXTERIOR LIGHTING INCLUDING SECURITY AND
CCTV APPLICATIONS and as shown.
1.2.7
Error Detection and Retransmission
A cyclic code error detection method shall be used between local processors
and the central station, which shall detect single and double bit errors,
burst errors of 8 bits or less, and at least 99 percent of all other
multibit and burst error conditions. Interactive or product error
detection codes alone will not be acceptable. A message shall be in error
if 1 bit is received incorrectly. The system shall retransmit messages
with detected errors. A 2-digit decimal number shall be operator
assignable to each communication link representing the number of
retransmission attempts. When the number of consecutive retransmission
attempts equals the assigned quantity, the central station shall print a
communication failure alarm message. The system shall monitor the
frequency of data transmission failure for display and logging.
1.2.8
System Definitions
1.2.8.1
Intrusion Alarm
An alarm resulting from the detection of a specified target, attempting to
intrude into the protected area or when entry into an entry-controlled area
is attempted without successfully using entry control procedures.
1.2.8.2
Nuisance Alarm
An alarm resulting from the detection of an appropriate alarm stimulus, or
failure to use established entry control procedures, but which does not
represent an attempt to intrude into the protected area.
1.2.8.3
Environmental Alarm
A nuisance alarm resulting from environmental factors.
1.2.8.4
False Alarm
An alarm when there is no alarm stimulus.
1.2.8.5
Duress Alarm
A normally covert alarm condition which results from a set of
pre-established conditions such as entering a special code into a keypad or
by activating a switch indicating immediate personal danger. This alarm
category shall take precedence over other alarm categories.
1.2.8.6
Guard Tour Alarm
An alarm resulting from a guard being either early or late at a specified
check-in location.
SECTION 13720A
Page 13
Previous Page
