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71
Configuring the 56/64 kbit data
communication modules
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No setting is available for the short range fibre optical modem on the HMI. There are
however some settings that can be made on a DIP-switch located behind the cover
around the fibre optic connectors at the back of the terminal according to
figure 34
. Af-
ter the fibres have been disconnected, if attached, the cover plate can be removed by
pulling the middle of the cover plate.
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Av. cable length between
splices
3.0 km
Average number of splices
0.33 splice/km
0.027 dB/km
0.027 dB/km
Number of repair splices
0.10 splice/km
0.008 dB/km
0.008 dB/km
Fibre margin
0.010 dB/km
0.010dB/km
Total fibre attenuation per km
0.265 dB/km
0.385 dB/km
Maximum optical transmis-
sion distance
60 km
41 km
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Fibre optic
connectors
Cover
plate
On
Off
TXD
CTS
RTS
MA
LA
Sync
RXD
DSR
DCD
RA
LO
Sync
1
2
3
4
Reset
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Содержание 500 Series
Страница 6: ... RQWHQWV ...
Страница 32: ...26 Mounting methods and mounting details KDSWHU 7HUPLQDO GLPHQVLRQV DQG PRXQWLQJ DOWHUQDWLYHV ...
Страница 46: ...40 Test switch modules for RED 521 KDSWHU 7HUPLQDOV ZLWK D WHVW VZLWFK PRGXOH ...
Страница 72: ...66 Making the electrical connections KDSWHU OHFWULFDO FRQQHFWLRQV ...