- 31 -
8.
Wiring
○
The figure below shows the example of the case where secondary stations 1
–
3 (3 stations) will be connected to
the primary station.
◇ For cables ①
-
③, use the cable with the same characteristic impedance.
・
Connect secondary stations 1-3 as slave, as shown in the figure.
Use the cable with the same characteristic impedance for the connection between secondary stations as
well.
◇ Attach the terminator to both
the
primary station ① and the farthest secondary station ② (secondary
station 3).
◇ Choose the terminator of which [Characteristic impedance of cables ①
-
③]
=
[Resistance of ①]
=
[Resistance of ②].
・Also, use the cable with characteristic impedance where [Resistance of ①]//[Resistance of ②] (parallel
combined resistance)
is 75Ω or higher.
