Eye
III+
VXB
I
nstallation Guide
Page 17
Installation of
Eye
III+
VXB
for Local Monitoring
(Support BS8418)
Install
Eye
III+
VXB
with Tamper Circuit and External
Resistors
Eye
III+
VXB
supports tamper detection (DEOL and SEOL) on all alarm input, arm/disarm
input and security switch input.
*DEOL : Dual End of Line termination with NC and NO connection
*SEOL : Single End of Line termination with NC and NO connection
NC/NO : Alarm or input port without tamper circuit connection
For connecting the tamper circuit with DEOL, the circuit with the normal closed condition when the
system detected a 1.2k and with an alarm open condition when the system detected a 7.4k . The
transition from 1.2k to 7.4k is generated an alarm condition. To set up the configuration of
those alarms and input port are shown in the following diagram. The circuit debounce time
between each sensors is 20 millisecond.
(*please refer to glossary)
Dual End of Line Configuration:
Normal Close (NC)
Normal Open (NO)
Term Status
Description
S/C
TAMPER Wire short (point A and B)
LoZ NORMAL Switch close (point B and C)
HiZ ALARM Switch open (point B and C)
O/C TAMPER Wire open (point A and B)
Term Status
Description
S/C
TAMPER Wire short (point A and B)
LoZ ALARM Switch close (point B and C)
HiZ NORMAL Switch open (point B and C)
O/C TAMPER Wire open (point A and B)
wire
switch
A
B
C
wire
switch
A
B
C
R1K2
R6K2
R1K2
R6K2
