Kramer VS-4228, Руководство пользователя

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14 VS-4228 - Connecting the VS-4228
3. If shielded cable is used for an RS-485 connection, connect the shield to the
Ground PIN.
Figure 9 illustrates the RS-485 line that connects:

Between each VS-4228 unit

To the PC via a Kramer Tools VP-43xl Interface Converter
(connect the PC’s 9-pin D-sub COM port to the “RS-232 in” 9-pin
D-sub (F) port on the VP-43xl . Next, connect the RS-485 port on
the VP-43xl to the RS-485 ports on the VS-4228 units)
Figure 9: Cascading Units via the RS-485 Control Interface
Note : When cascading multiple units using the RS-485 interface,
you must connect a 100Ω terminator between the + and – pins of
the last
VS-4228 on the line.
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