D9412GV4/D7412GV4 v2.03 | Installation and System Reference Guide | 9.0 Off-Board Points
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Bosch Security Systems, Inc. | 7/16 | F01U265457-09 49
For Points 9 to 127 (9 to 75 on D7412GV4):
1. Connect the GND terminal of the D8125 to
Terminal 23 on the D9412GV4 or to Terminal
9 on the D7412GV4.
2. Connect the OUT terminal of the D8125
POPEX Module to ZONEX IN 1, Terminal 27.
3. Connect the IN terminal of the D8125 POPEX
Module to ZONEX OUT 1, Terminal 28.
4. Connect the AUX terminal of the D8125 to
Terminal 24 on the D9412GV4 or to Terminal
3 on the D7412GV4.
For Points 129 to 247 (D9412GV4 only):
1. Connect the GND terminal of the D8125 to
Terminal 23.
2. Connect the OUT terminal of the D8125
POPEX Module to ZONEX IN 2, Terminal 25.
3. Connect the IN terminal of the D8125 POPEX
Module to ZONEX OUT 2, Terminal 26.
4. Connect the AUX terminal of the D8125 to
Terminal 24.
Refer to Section 9.3.4 Wiring Data Expansion
Loops to POPEX Modules on page 49 for
instructions on connecting POPITs to the D8125
POPEX Module.
9.3.3 Wiring POPITs to the Data Expansion
Loop
Use one two-wire data expansion loop or
distribute the POPITs on up to three loops.
Setting DIP switches on the POPIT Modules
assigns them to point numbers. Refer to Section
9.3.6 POPIT Module Point Assignments on page 50.
Review Section 4.6.2 Installing and Wiring
Detection Devices on page 23 to determine if
shielded wire is required. Refer to Table 13 to
determine the wire gauge for the length of each
data expansion loop.
Table 13: Data Expansion Loop Wire
Specifications
Maximum Length of All Data Expansion Loops
Combined
AWG Length in Feet (Meters)
22 1800 (548)
20 2890 (881)
18 4600 (1402)
16 7320 (2231)
14 11,650 (3551)
Combine Data Expansion Loops
The maximum lengths shown in Table 13 are for
all data expansion loops connected to the same
POPEX Module combined.
Wiring POPITs Together
Do not connect POPITs to each other
in series or with a T-tap. Doing so
might cause random missing POPIT
conditions.
Before installing the POPITs, ensure
that the resistance on the data
expansion loop is no more than 40 .
To connect POPITs to one another in parallel:
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. Repeat Steps 1 and 2 to connect all POPITs
to the expansion loop. It is not necessary to
wire the POPITs in any particular order on the
loop. The switch setting on each POPIT
assigns it a point number, regardless of its
physical location.
Three-inch Clearance for Tampered POPITs
Mount tampered POPIT modules at least 3 in (7.6
cm) apart to prevent the tamper magnets from
interfering with each other.
9.3.4 Wiring Data Expansion Loops to POPEX
Modules
Each POPEX Module has two positive (+) and two
negative (-) data expansion loop terminals. Up to
119 POPITs can be connected to one D8125 on
the D9412GV4; up to 67 POPITs for the
D7412GV4 (Figure 15 on page 47 or Figure 16 on
page 48).
To connect the data expansion loops to the
D8125 POPEX Module:
1. Connect the positive (+) data terminal from
the first POPIT on the data expansion loop to
one of the D8125’s positive (+) terminals.
2. Connect the negative (-) data terminal from
the first POPIT on the data expansion loop to
one of the D8125’s negative (-) terminals.
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