B-4
Non Steady Visual Evacuation system option
Overview When enabled, this option allows you to select the flash pattern output by non-steady visual
signals. The term non-steady visual signal refers to any visual notification appliance capable of
emitting a pattern of flashes, such as incandescent visuals.
The default setting for this option is not enabled.
When you enable this option, use the drop down list box to the right of the option to set the
flash pattern as follows:
• March Time. A coded signal that uses 120 beats per minute. Each beat consists of 1/4
second pulse on, 1/4 second off.
• Slow March Time. A coded signal that uses 60 beats per minute. Each beat consists of
1/2 second pulse on, 1/2 second off.
• Temporal. A five-pulse coding pattern consisting of five 1/2 second pulses, each
separated by a 1/2 second silence. Each three pulse group is separated by 1 ½ seconds of
silence.
Note: This option cannot be used for public mode signaling as defined in Section 4-4 of NFPA 72-99.
Figure B-3. System Options: Setting Non Steady Visual Evacuation
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