Nic Wiring Options; 1: Fiber Loop Modules - Honeywell 6820 Manual

Common Communications Link
5.3 SK-NIC Wiring Options
Linking a group of 6820 panels requires the use of a network interface card with each panel. The SK-NIC connects to other linked units
using unshielded, twisted-pair wiring or fiber optic cable.
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. For more information, see
the SK-FML/ SK-FSL Installation Instructions P/N LS10178-001SK-E.
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 link between nodes.
• The SK-FSL is a fiber module that allows the single-mode fiber to link 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.
Accessory Mounting Kits
The SK-NIC can be mounted within the 6820 cabinet or in the SK-NIC-KIT accessory cabinet. The SK-NIC-KIT includes the SK-NIC, cab-
inet with door, cable, and mounting hardware. The accessory kits are available if you want to install the SK-NIC outside of the 6820 cabinet.
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Figure 5.3 SK-NIC Network Interface Card
TX
LED1
RX
LED2
SK-FSL Single-Mode Fiber Module
Figure 5.4 Types of Fiber Loop Modules
Figure 5.5 SK-NIC with Fiber Loop Modules
SK-FML Multi-Mode Fiber Module
TX
LED1
RX
LED2
6820/EVS Manual — P/N LS10144-001SK-E:E 4/6/2022
SK-NIC Wiring Options