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NFS2-640/E Operations Manual —
P/N 52743:F1 06/16/2011
Special Zone Operation
NAC Coding
A.4 NAC Coding
A.4.1 Overview of Coding
A Coding selection is the Code Type that pulses when the control panel activates a NAC mapped to
Special Zone F8. Special Zone F8 provides seven coding selections (see Table A.4) that you can list
in the CBE of a NAC. To use a Code Type, program a NAC to list Zone F8 (reserved for a Code
Type) in the NAC CBE list.
The table below contains descriptions of the signals that correspond to each NAC Code Type:
A.4.2 How to View Coding (F8) Selections
You can use the Read Status Entry option to view the current selection for the Coding function. To
do so, press the following keys in sequence:
The LCD display shows the current selections for the Code Type. Figure A.6 shows a sample LCD
display of a Code Type selection of March Time:
Figure A.6 Sample Read Status for Coding Function
NOTE:
Control modules (FCM-1, FRM-1) cannot be coded.
Coding Selection
Signal
Notes
March Time (default)
120 PPM (pulses Per minute)
Default selection for NACs mapped to F8.
Two-Stage
Alert signal (20 PPM) or
General Alarm signal (Temporal
pattern)
Alert signal – When an alarm occurs and not activated by
another zone, the output pulses at 20 PPM.
General Alarm signal – If not acknowledged within 5 minutes,
the control panel switches from 20 PPM to Temporal pattern.
California
10 sec. On, 5 sec. Off, repeats
n/a
Temporal
0.5 on, 0.5 off, 0.5 on, 0.5 off,
0.5 on, 1.5 off, repeats
Used as a standard general EVAC signal.
Canadian Dual Stage
(3 minutes)
Alert signal (20 PPM)
Drill Switch activation switches
to Temporal pattern
Same as Two-Stage except will only switch to second stage by
activation of Drill Switch three minute timer.
Canadian Dual Stage
(5 minutes)
Alert signal (20 PPM)
Drill Switch activation switches
to Temporal pattern
Same as Two-Stage except will only switch to second stage by
activation of Drill Switch five minute timer.
System Sensor Strobe
Synchronizes System Sensor ADA horn/strobes.
Table A.4 F8 Code Types and Audio Signals
NOTE:
For instructions on programming the Coding function, refer to the
NFS2-640
Programming Manual.
Status
Coding Function status banner
Zone F08
Coding selection
O F F C O D I N G F U N C T I O N C O D E T Y P E
M A R C H T I M E F 0 8
