P/N LS10178-001SK-E Rev A
ECN: 17-0196
SK-FML/SK-FSL Fiber Option
Modules Installation Instructions
Section 2: SK-FML/SK-FSL
Specifications
Table 2.1 lists the SK-FML multi-mode fiber-optic
digital audio ports specifications.
Table 2.2 lists the SK-FSL single-mode fiber-optic
digital audio ports specifications.
Section 1: Description
The Silent Knight/Farenhyt Emergency
Communication Systems that use the ECS-NVCM
(Network Voice Control Module) and the Silent
Knight/Farenhyt Fire Alarm Control Panels that use
the SK-NIC (Network Interface Card) support two
types of fiber-option modules to convert wire to fiber.
• SK-FML (Fiber-Optic
Multi-Mode, Receiver)
• SK-FSL (Fiber-Optic
Single-Mode,
Transmitter)
SK-FML (Fiber-Optic Multi-Mode, Receiver)
The SK-FML is a fiber module that is used as one
channel to transmit or receive communications with
the ECS-NVCM (Network Voice Control Module) or
SK-NIC (Network Interface Card). It allows the multi-
mode fiber to network between the SK-FML module
boards.
Figure 1.1 illustrates the SK-FML fiber module.
Figure 1.1 SK-FML Circuit Board
SK-FSL (Fiber-Optic Single-Mode, Transmitter)
The SK-FSL is a fiber module that is used as one
channel to transmit or receive communications with
the ECS-NVCM (Network Voice Control Module) or
SK-NIC (Network Interface Card). It allows the
single-mode fiber to network between the SK-FSL
module boards.
Figure 1.2 shows the SK-FSL fiber module.
Figure 1.2 SK-FSL Circuit Board
Table 1.1 lists the models that are assigned to the
ECS-NVCM and SK-NIC.
ECS-NVCM
SK-NIC
IFP-2100ECS IFP-75
IFP-2100 6808
IFP-300ECS
IFP-300 6700
6820/6820EVS
Table 1.1 Network Voice and Interface Card
Modules
SK-FML Specifications
Type of Connector:
Type ST
Maximum
Attenuation:
8 dbB for multi-mode with
62.5/125 micrometer cable
@ 200 µ.
Current Draw:
Standby Current:
0.053 A
Alarm Current:
0.053 A
Environment Rating: 32° to 120°F (0° to 49°C),
0% to 93%
Relative Humidity:
Non-condensing at 90°F (30°C)
Table 2.1 SK-FML
SK-FSL Specifications
Type of Connector: Type LC
Maximum
Attenuation:
30 dB for multi-mode with 9/125
micrometer cable @ 1310 nm.
Current Draw:
Standby Current:
0.079 A
Alarm Current:
0.079 A
Environment Rating: 32° to 120°F (0° to 49°C),
0% to 93%
Relative Humidity:
Non-condensing at 90°F (30°C)
Table 2.2 SK-FSL
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