Figure 25 Input - Supervised For Open; Figure 26 Input - Supervised For Short - Mircom TX3 Series Installation Manual

4.7.6.2 Supervised for open
When configured as supervised for open, the active state is 'closed' (short). Open
supervision uses a single 47K ohm resistor.
Figure 25. Input - supervised for open
Note:
4.7.6.3 Supervised for short
When configured as supervised for short, the active state is open. A single 47K
ohm resistor is required for short supervision.
Figure 26. Input - supervised for short
Note:
4.7.6.4 Supervise for open and short
When configured as supervise for both 'open' and 'short', the active state cannot
be open, therefore the active state is closed.
UL Listed TX3-CX Card Access System Installation Manual
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Active when short
47 K ohms
The active state cannot be an open state.
Active when open
The active state cannot be a short state.
Setup of the Card Access Controller
Version 2