Installation Guide

R2R, Repeater to Repeater Link
Connect the R2R cable, if this optional feature is to be used. See also the
F2F, Fiber to Fiber Link section below.
The R2R net cable is connected to the P34 Repeater to Repeater Link
port via the P1 terminal on the R2R connector board to the right in the
repeater (see Figure 2-13).
The P34, Repeater to Repeater Link port, is described in the Connection
Ports section on page 2-18.
Any cable type can be used for indoor installation.
The following cable type is recommended for outdoor installation:
Li 2YC11Y, 2x2xAWG24/222, non-halogen, Metrofunkkabel-Union.
Use a strain relief bushing or a connector at the bottom of the repeater
for the external net cable.
If the link cable between two repeaters in an R2R net is longer than
25 meters, then an RS-485 repeater is required, see the figure.
Further information about the Repeater to Repeater Link is found in the
VD202 91/EN, R2R, Repeater to Repeater Link Kit, Installation Guide.
F2F, Fiber to Fiber Link
F2F is a feature that makes it possible to communicate with all repeaters
that have a FON board (i.e. BMU, RMU and FOR) and are included in
the same fiber optic net. By using the existing fiber optic distribution net,
no wire or other communication device is required.
Communication with repeaters works also in mixed F2F and R2R net.
MS
DPX
ANT
TEST
DC
-30 dB
-20 dB
P31
P3 P2
P1
Figure 2-13. R2R connection
>25m
ALLGONALLGON
Allgon Systems AB AR Repeaters Installation
VD204 43/EN - Installation Guide Rev. 1A 2001-06 2 - 14