2.4.1
Display
Each console shall do the following:
a.
Display incoming alarms in alphanumeric format, by means of a
light emitting diode, illuminated dot matrix, or cathode ray tube.
(1) Indicate the identity with a minimum of a four digit
0002-9999, time, date, and type of signal (alarm, trouble) code
number assigned to the originating transmitter.
(2) Include a message of a minimum of 3 lines of 20 characters
each for each transmission (minimum 500 transmitter capacity).
The message shall be operator-programmable into the memory through
a keyboard which shall be provided.
b.
Include a means to manually clear and reset the display. If the
display is not reset at the time additional alarms are received,
the additional alarms shall be retained in memory and a
distinctive audible or visual indication given to the operator
that additional alarms are waiting to be acknowledged.
(1)
Alarms shall be printed immediately upon receipt.
2.4.2
Memory
Provide each console with a programmable memory capable of retaining at
least 500 transmitter codes, together with specific messages, total number
of zones possible, and related information associated with each of the 500
transmitters. If memory is operator-programmable, restrict access into the
memory for the purpose of making additions or deletions by the use of a key
switch for access code to prevent unauthorized changes. Memory shall not
be lost in the event of a total loss of primary and emergency power
supplies.
2.4.3
Digital Clock
Each console shall incorporate an electronic digital clock. Clock shall
display the current time expressed in 24-hour time and date (day and month)
and shall transmit to each interconnected printer the time and date that
signals are received. Provide manual means of resetting the clock.
2.4.4
Provide printers of high speed, computer compatible, low noise design,
capable of printing incoming messages with no messages being lost. Upon
reception of an alarm, each printer shall print on paper the required
visually displayed data, including the date and time received. Provide
standard size paper for recording messages, commercially available from
three or more manufacturers, usable on a computer printer or adding
machine, and continuous feed. Include paper take-up devices for storing
printouts. Print alarms in a manner to make them readily distinguishable
from acknowledgments and routing messages, or by use of a different color,
typeface, type size, or other distinguishable means.
2.4.5
Audible Trouble and Alarm Devices
The audible alarm device used to indicate the receipt of alarms shall
produce a sound distinct from other audible trouble signals. The device
SECTION 13854N
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