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CHAPTER 2:
INSTALLATION REQUIREMENTS
2-2 FOT-F3 USER’S MANUAL
• When determining the maximum fiber optic cable length,
the fiber optic budget and total network propagation delay
should be calculated and taken into consideration before
fiber runs are incorporated into any network design. Fiber
optic budget is the combination of the optical loss due to the
fiber optic cable, in-line splices, and fiber optic connectors.
Propagation delay is the amount of time it takes a packet to
travel from the sending device to the receiving device. If the
total one way propagation delay between any two nodes
anywhere in the network exceeds 25.6
µ
s, use some form
of segmentation, such as bridging or routing, to divide the
problem signal paths into smaller segments.
2.1.2 AUI Cable Requirements
• The AUI cable
connecting the transceiver to a device must
be an Ethernet Version 1, Version 2, and/or IEEE 802.3 type
cable that matches the type of device being attached to the
AUI port.
• The AUI cable must not exceed 50 meters (164 feet) in
length. If a 28 AWG AUI cable (office AUI) is used, limit the
cable length to 16 meters (50 feet).