Sk-Nic Wiring Options; Fiber Loop Modules - Honeywell 6820EVS Installation And Optimization Manual

Model 6820 / 6820-EVS Installation Manual LS10144-001SK-E
5.3

SK-NIC Wiring Options

Linking a group of 6820/EVS requires the use of a SK-NIC network interface card with each panel. The SK-NIC
connects to other linked units using unshielded, twisted-pair wiring or fiber-optic cable.
Figure 5-3 SK-NIC Network Interface Card
5.3.1

Fiber Loop Modules

Two types of fiber optic modules are available to use to transmit and receive communication with the SK-NIC.
See Figure 5-4. For more information see SK-FML / SK-FSL installation sheet P/N LS10178-001SK-E.
SK-FML Multi-Mode Fiber
SK-FSL Single-Mode Fiber
Figure 5-4 Types Fiber Loop Modules
The SK-FML (Fiber-Optic Multi-Mode) and SK-FSL (Fiber-Optic Single-Mode) are plug-in fiber loop modules.
The two types of fiber optic modules are used as one channel to transmit or receive communications with the SK-
NIC, ARCNET communication circuit.
The following describe the two types of fiber optic modules.
• The SK-FML is a fiber module that allows the multi-mode fiber to be linked between nodes.
• The SK-FSL is a fiber module that allows the single-mode fiber to be linked between nodes.
Each fiber loop module can Transmit (TX) and Receive (RX) fiber-optic cable connecting to the SK-NIC. Up to
two fiber loop cards can be added to the SK-NIC, and both cards may be combined in the same configuration.
5-3