
9752 Installation Guide 3. Installation
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Note: Depending on the sensor, a 4K4 resistance means either
"masked" or "fault". Use command 88 to specify which reporting method
to use. All sensors with anti-masking contacts must use a 4K4 resistance
for the same meaning (masked or fault).
Short Circuit Tamper Alarm
Open Circuit Tamper Alarm
Zone
Resistance
Healthy
Sensor
failure/Fault/Masked
Masked
Alarm
9.1k
2.2k
4.4k
6.9k
2K2
2K2
2K2
2K2
4K7
4K7
Tamper
Zone 1
Zone 2
Tamper
Alarm
Alarm
Anti-mask
Anti-mask
Figure 14. Wiring Zones that use Anti-Masking
Connecting Expanders
9954 Hardwired Expander
The 9954 hardwired expander provides connectors for eight CCL, FSL or EOL
zones (EOL zones are not relevant for the 9752). Figure 15 shows the layout
of the PCB. See the wiring diagram supplied with the 9954 hardwired
expander for more details.
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