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D7212GV2 | Operation and Installation Guide | 9.0
9.3
Installing the D8125 POPEX Module
For information on the Multiplex Bus
Interface, refer to the D8125 Multiplex Bus
Interface Operation and Installation Guide
(P/N: 36796).
Save the POPIT Label Sheets: The D8125 is
packaged with two sets of POPIT label sheets. One set
is marked "Bank 1" for use with the D7412GV2 and
D7212GV2. The other set is marked "Bank 2" for use
with the D9412GV2 and D9112. Use the Bank 1 sheet
later to label the POPITs. Refer to Section 9.3.6 POPIT
Module Point Assignments on page 35.
9.3.1
Mounting
To install the D8125 in the enclosure with the control
panel:
1. Align the D8125 POPEX Module with any of the
four mounting locations in the enclosure (refer to
Figure 2 on page 14).
2. Using the screws provided with the module, secure
it in the enclosure.
9.3.2
Wiring the D8125 to the Control Panel
To wire one or two D8125 Modules to the control
panel (Figure 11 on page 33):
Power Down the Control Panel
Disconnect the positive (red) battery lead at the battery
and unplug the transformer.
For Points 9 to 40:
1. Connect the GND terminal of the D8125 to
Terminal 9 on the D7212GV2.
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 3 on the D7212GV2.
Refer to Section 9.3.4 Wiring Data Expansion Loops to
POPEX Modules on page 35 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 35.
Review Section 4.6.2 Installing and Wiring Detection
Devices on page 17 to determine if shielded wire is
required. Determine the wire gauge for the length of
each data expansion loop using Table 13.
34
Off-Board Points
Table 13:
Data Expansion Loop Wire
Specifications
Maximum Length of All Data Expansion Loops
Combined
AWG
Length in Meters (Feet)
22
548 (1800)
20
881 (2890)
18
1402 (4600)
16
2231 (7320)
14
3551 (11,650)
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 Ω.
To connect POPITs to each other 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 sequence 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 7.6 cm (3 in.)
apart to prevent the tamper magnets from interfering
with each other.
Bosch Security Systems, Inc. | 5/05 | F01U003805B
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