21
CHAPTER 4: Installation
3.
Connect optical cable to the
transmit and receive connectors
on the Converters. TX on a
Converter must connect to RX
on its mate.
There may be as many as four
pairs of optical fiber connectors
between Converters, including
the connectors used to attach
the cable to the Converters. With
the Fiber Optic Converter II,
which has two channels, each
channel may have up to four
pairs of connectors.
RX
TX
1st
pair
2nd
pair
3rd
pair
Optical cables and Connectors
4th
pair
TX
RX
LT222A
LT222A
Figure 4-5. Connecting the Cable to the Converters.
4.
Configure each Converter using
the Config switch on its front
panel. The Converter that is
closest to the MAU requires a
different switch setting than the
Converter closest to the station.
Use the Figure 4-6. (More
information on the Config
switch is given in Chapter 3.)
Converter
nearest station
Converter
nearest MAU
Switch 1 - up
Switch 2 - up
Switch 3 - down
Switch 4 - up
OPEN
1
2
3
4
Switch 1 - down
Switch 2 - down
Switch 3 - up
Switch 4 - down
OPEN
1
2
3
4
Figure 4-6. Config Switch Settings for Lobe Extensions.
