DSC HS2016 Reference Manual

Section 2: Installation
Figure 2-9 Normally Closed
The following table shows zone status under certain conditions for NC Loops:
Table 2-5 NC Loop Status
Loop Resistance Loop Status
0
Ω
(shorted wire, loop shorted) Secure
Infinite (broken wire, loop open) Violated
Single End-of-Line (SEOL) Resistor
When SEOL resistors are installed at the end of a zone loop, the alarm panel detects if the circuit is secure, open, or shorted.
The SEOL resistor must be installed at the end of the loop for proper supervision.
To enable SEOL supervision, program section [013], options [1] and [2] to OFF.
Note: This option should be selected if either normally closed or normally open detection devices or contacts are used.
Figure 2-10 SEOL Wiring
The following table shows zone status under certain conditions for SEOL:
Table 2-6 SEOL Loop Status
Loop Resistance Loop Status
0Ω (shorted wire, loop shorted) Violated
5600Ω (contact closed) Secure
Infinite (broken wire, loop open) Violated
Double End of Line (DEOL) Resistors
When double end-of-line (DEOL) resistors are installed at the end of a zone loop, the second resistor enables the panel to
determine if the zone is in open, closed, tampered or faulted.
Note: Any zone programmed for Fire or 24-hr Supervisory must be wired with a SEOL resistor regardless of the type of zone
wiring supervision selected for the panel. If you change the zone supervision options from DEOL to SEOL or from NC to
DEOL, power the system down completely, then power it back up for correct operation.
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DSC HS2016 Specifications

General

Mounting Type	Wall mount
Power Supply	16.5VAC
Battery Backup	12VDC
Operating Temperature	32°F to 120°F (0°C to 49°C)
Dimensions	267mm