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Section 4 Wiring
Section 4.2 and Section 4.4 list the wiring for the
fiber-optic modules.
• Fiber-Optic Multi-Mode
Module (SK-FML)
Section 4.1 SK-FML Circuit Board
Diagram
Figure 4.1.1 illustrates the SK-FML PCB circuit
board diagram.
Figure 4.1.1 SK-FML Circuit Board Diagram
Section 4.2 SK-FML Installation Wiring
Terminals
Table 4.2.1 lists the SK-FML installation wiring
terminals.
Designation
J1
Connects to the transmitting fiber.
(See Note)
J2
Connect to the receiving fiber.
(See Note)
SW1-1
Sets the optical output power for the
transmitting fiber. (See Table 4.2.2)
SW1-2
Sets the optical output power for the
transmitting fiber. (See Table 4.2.2)
SW1-3
Sets the optical output power for the
transmitting fiber. (See Table 4.2.2)
SW1-4
Not used.
P1
Plugs onto P5 (Port 1) or P6 (Port 2) of
the ECS-NVCM or SK-NIC.
NOTE: Use standard ST connector fiber-optic
cable, multi-mode, up to 200 µ (optimized for
62.5/125 µ). Signal loss up to 8dB maximum
between nodes.
Table 4.2.1 SK-FML Terminal Wiring Designations
P/N LS10178-001SK-E-A
• Fiber-Optic Single-
Mode Module (SK-FSL)
J2
FIBER-IN
J1
FIBER-OUT
Description
firealarmresources.com
SK-FML/SK-FSL Fiber Option Modules Installation Instructions
Table 4.2.2 lists the SK-FML switch settings and
drive currents.
SW1-1
SW1-2
OFF
OFF
OFF
OFF
OFF
ON
OFF
ON
ON
OFF
ON
OFF
ON
ON
ON
ON
NOTE: SW1-4 is not used.
Table 4.2.2 SK-FML Switch Settings/Drive Currents
Section 4.3 SK-FSL Circuit Board
Diagram
Figure 4.3.1 illustrates the SK-FSL, PCB circuit
board diagram.
J1
U6
Figure 4.3.1 SK-FSL Circuit Board Diagram
Section 4.4 SK-FSL Installation Wiring
Terminals
Table 4.4.1 lists the SK-FML installation wiring
terminals.
Designation
J1
Plugs on to P5 (Port 1) or P6 (Port 2)
of the ECS-NVCM or SK-NIC.
U6
Top connection connects to the
receiving fiber (IN).
Bottom connection connects to the
transmitting fiber (OUT).
NOTE: Use LC connector fiber-optic cable, single
mode, up to 1310 nm (optimized for 9/125 µ).
Signal loss up to 30 dB maximum between nodes.
Table 4.4.1 SK-FML Terminal Wiring Designations
Drive
SW1-3
Current
OFF
10 mA
ON
20 mA
OFF
32 mA
ON
42 mA
OFF
54 mA
ON
64 mA
OFF
76 mA
ON
86 mA
TX
LED1
RX
LED2
FIBER IN
FIBER OUT
Description
3
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