Installation manual
D9124 Operation & Installation Manual
Page 25
© 1996 Radionics
74-06799-000-D 2/96
Connect POPITS to the Data Cable
You do not need to wire POPIT modules in any order on the motherboard’s D8125
POPEX Data Expansion Loop. An address setting on each POPIT (see
Selecting POPIT
Point Assignments
) identifies the point of protection, regardless of its physical location on
the data cable. POPIT modules must be mounted at least three inches apart. This
prevents the tamper magnets from interfering with each other.
Connect POPIT modules to the data loop in parallel. Do not T-tap POPIT Data Loops
together (see
Figure 13
).
1. Connect the positive (+) Data terminal from one POPIT to the positive (+) Data
terminal on the next POPIT.
2. Connect the negative (-) Data terminal from one POPIT to the negative (-) Data
terminal on the next POPIT.
3. Follow the steps above to connect all POPITs on the same D8125 POPEX Data
Loop.
Figure 15: Connecting Devices to the Motherboard
MOTHERBOARD
SWITCHED + 24 VDC
COMMON
D8125 POPEX
DATA LOOP
6
5
TO NEXT
TO NEXT
+
-
+
-
D290M
D290S
BASE
+
-
+
-
+
-
+
-
+
-
+
-
D290M
D290S
BASE
D290M
D290S
BASE
MOTHERBOARD
Connecting the D290S and D290M Addressable Smoke Detector Bases
To prevent damage to the POPEX module:
Wire smoke detector bases while the data
cable is disconnected from the motherboard. Before connecting detector wiring to the
panel, meter each wire to ground to check for continuity, and meter between each wire
for continuity. You should have no grounds, or shorts between any of the wires. Put the
detector heads on after you have metered all the wiring (see
Figure 14
). Refer to the
Operation and Installation Manual for these detectors before beginning the installation.
To Motherboard
D8125 POPEX
Data Loop
2
2
2
1
1
1
3
3
3
POPIT
ON
1 2 3 4 5 6
DATA
(-)(+) LOOP
ON
1 2 3 4 5 6
DATA
(-)(+) LOOP
ON
1 2 3 4 5 6
DATA
(-)(+) LOOP
UP TO 63 POPITS
= POPIT SENSOR LOOP (TYPICAL UP TO 63 PLACES)
= 33K Ω END-OF-LINE RESISTOR (TYPICAL UP TO 63 PLACES)
= POPIT SWITCH BLOCK (TYPICAL UP TO 63 PLACES)
2
3
1
POPIT POPIT
(–)
(+)
Figure 14: Connecting POPITs to the Data Cable