IThere are two types of acknowledges for the 4020 system: Global Acknowledge and Individual Acknowledge. Each
acknowledge type operates with the Supervisory Condition in the following manner:
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Global Acknowledge
- When Global Acknowledge is used on the 4020 system, a single key press of the
<SUPV ACK> key acknowledges all supervisory changes in the system. If status change information is
required, you may review this data (after a 30-second delay) by pressing the &UPV ACK> key and reading
the total number of supervisory changes on the alphanumeric display.
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Individual Acknowledge (For NFPA 72 Proprietary Receiver Requirements) - If a supervisory condition has
been acknowledged with the cSUPV ACK> key and further unacknowledged conditions remain in the system,
the tone-alert continues to sound and the next status change is shown on the alphanumeric display. This
process repeats until all changes are acknowledged. When this occurs, the tone-alert silences and the highest
priority acknowledge change appears on the display.
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