Kramer Electronics VP-885 - Manual (Page 32)

KRAMER: SIMPLE CREATIVE TECHNOLOGY
Controlling the VP-885
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8.2 Controlling the VP-885 via RS-485
You can operate the VP-885 via the RS-485 port from a distance of up to
1200m (3900ft) using a PC equipped with a card that provides an RS-485
port.
To connect a PC or controller to the RS-485 port on the unit:
1. Wire the RS-485 port on the VP-885 to the RS-485 port on the controller
as follows:
 Connect the A (+) pin on the RS-485 port of the PC to the A (+) pin
on the RS-485 port on the rear panel of the VP-885
 Connect the B (–) pin on the RS-485 port of the PC to the B (–) pin
on the RS-485 port on the rear panel of the VP-885
 Connect the G pin on the RS-485 port of the PC to the G pin on the
RS-485 port on the rear panel of the VP-885
2. Set the DIP-switches (see Section 6.5
3. Terminate the RS-485 line on both the VP-885 (set DIP-switch 1 to ON)
and on the controller.
) so that the Machine number on the
VP-885 is any number between 2 and 16.
8.3 Controlling the VP-885 via Ethernet
The VP-885 must be suitably configured before you can control it via
Ethernet. Configuration instructions are provided in Section 6.4.3 .
To control the VP-885 via Ethernet:
1. Connect the Ethernet port on Machine number 1 (see Section 6.4
 via a network switch (as shown in
) to the
LAN port of your PC either:
Figure 22 ) using a straight-through
cable
 directly using a crossover cable
2. Connect the video sources and acceptors, the appropriate audio sources
and acceptors, and the power cord to each VP-885.
3. Set the Machine number on the first VP-885 to be Machine 1 (see
Section 6.5
4. Terminate the RS-485 line on both the first VP-885 and on the last
VP-885 (see
).
Section 6.5
5. Set the Machine number on all VP-885 units other than Machine 1 to a
unique number
).
1 between 2 and 16 (see Section 6.5
1 Set the first unit to Machine number 2, the second unit to Machine number 3, and so on up to 16
).