ADT Security Services 400 Manuale Utente

3. Operating Modes

12

Unimode 400 Operations PN 50709:A  10/20/97

Zone F8—reserved for NAC coding functions—is only used by panel NAC circuits 
listing zone F8. You can select one of the four code types listed in Table 9: 

Notes on using coding functions:

M500CH modules Zone F8 does not work if listed in the CBE of M500CH modules.
Two-Stage  When an alarm occurs, an NAC programmed for two-stage, and not 
activated by another zone, pulses at 20 PPM.  After 5 minutes, the NAC changes to 
steady on unless you press <Acknowledge/Step>.  Pressing <Alarm Activate> on the 
control panel changes the NAC pulse to steady.  ICM-4/ICE-4 modules do not support 
Two-Stage and turn on steady.

ICM-4/ICE-4 modules   To enable California Code, cut D35 on the ICM-4 modules.  If 
D35 is not cut, ICM-4/ICE-4 modules turn on steady.

Zone F0 is reserved for Presignal functions. Zone F0 can be used to delay control points 
until an operator verifies an active control point. If including zone F0 in an M500CH or 
NAC CBE list, zone F0 overrides all other CBE actions. Detectors and monitor modules 
must list zone F0 in the CBE to be included in the Presignal/PAS operation.

At the first alarm, a programmable 0–180 second timer starts. If a Signal Silence 
occurs, the timer stops. If the delay timer expires, manual activation will activate 
outputs mapped to zone F0. The System Alarm relay, the 4XTM Polarity Reversal 
Alarm Output, and the 4XTM Municipal Box Output delay if PAS is selected, but do 
not delay for Presignal operations

March Time (default)

120 PPM (Pulses Per Minute)

Two-Stage

Alert signal – 20 PPM; General alarm signal: Steady on

California

10 sec. on, 5 sec. off, repeats

Temporal

0.5 on, 0.5 off, 0.5 on, 0.5 off, 0.5 on, 1.5 off, repeats 

an alarm occurs

and there is no PAS inhibit type M500M

activates

a second alarm activates

or you press the alarm activate key,

goes false

you select PAS 

and you do not press ACKNOWLEDGE 
within 15 seconds

goes false