Table of Contents
Advertisement
Appendix
Chapter 1. Network Installation Specification
1. Introduction
This Specification sets forth the specifications and requirements associated with installation work
conducted in accordance with the HI-C654/OD-F614 Network Specification.
2. Specifications
The HI-C654/OD-F614 must be connected via a transceiver cable, with a transceiver attached to a coaxial
cable (yellow cable) in accordance with the IEEE802.3 standard.
Table 1 lists recommended cable and device types.
If necessary, the HI-C654/OD-F614 can also be connected to a HUB or MAU using twisted pair cable.
Table 2 lists recommended device types.
Other cables and devices not listed in the table should not be used, as a rule.
3. Requirements
System implementation imposes the following requirements. These requirements should also be notified
to an outside vendor who will engage in installation work.
(1)
The network should be installed so that coaxial cables, transceivers, and transceiver cables
are easily accessible during network troubleshooting.
(2)
The maximum segment length of a single coaxial cable is 500 m. To extend it further, a
local repeater should be used.
(3)
If any two HI-C654/OD-F614 nodes are to be provided, the segment length between them
should be equal to shorter than 1.5 km, and the number of repeaters therebetween should be
equal to or less than 2. (See Fig. 2, Example of Local Repeater Connection.)
(4)
It should be always confirmed that the local repeater is powered on when it is used (up and
running around the clock, or powered on when used). In addition, sufficient installation
space should be secured during installation of the repeater to facilitate its operation.
(5)
The distance between transceivers should be 2.5 m or greater. Since the recommended
coaxial cable is marked at intervals of 2.5 m, a transceiver should be connected so that its
cable conductor is aligned to the mark.
(6)
Sufficient installation space should be secured for a transceiver to permit its replacement in
cases where it fails.
(7)
It should be always confirmed that an 8-port transceiver is powered on when it is used (up
and running around the clock, or powered on when used). In addition, sufficient installation
space should be secured during installation of the transceiver to facilitate its operation.
(8)
If a 4-port or 8-port transceiver(s) is used, the number of transceiver(s) connected adds up to
leakage current. Thus, a leakage breaker with a capacity greater than that of the transceiver(s)
connected should be provided.
(9)
The maximum segment length of a transceiver cable is 50 m.
(10) If a transceiver or repeater has a SQE (signal quality error) test switch (heartbeat switch), it
should be always ON.
(11) For a network conforming to the operation room specification, only single-port transceiver(s)
should be used.
(12) If a network extends from one building to another, remote repeaters should be used, which
should be connected via fiber optic cable. (See Fig. 3, Example of Remote Repeater
Connection.)
Note, however, that if the buildings share common ground (earth), local repeaters should be
used.
006-251-00
10.30.98 FM2327
Appendix-5
FN-PS551 Service Manual
Appendix-5
Advertisement
Chapters
Table of Contents
