Kramer-electronics VP-31 Manuel d'utilisateur télécharger pdf (Page 14)

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Table 4: DIP Switch Settings

PROGRAM

ADDRESS

Machine # 1 2 3 4 5 6 7 8

1 (Master)

ON OFF ON ON OFF OFF OFF OFF

2 (Slave)

OFF OFF OFF ON OFF OFF OFF ON

3 (Slave)

OFF OFF OFF ON OFF OFF ON OFF

4 (Slave)

OFF OFF OFF ON OFF OFF ON ON

5 (Slave)

OFF OFF OFF ON OFF ON OFF OFF

6 (Slave)

OFF OFF OFF ON OFF ON OFF ON

7 (Slave)

OFF OFF OFF ON OFF ON ON OFF

8 (Slave)

OFF OFF OFF ON OFF ON ON ON

Legend:

Switches 1, 2, 3: RS232

Switch 4: Reply

Switch 5: Baud Rate (Off=1200, On=9600 Baud)

Switches 6, 7, 8: ADDRESS

9.4.3

The "Reply" Option

When the PC addresses the Master/Slave machines, a "Reply" signal is sent back to the PC indicating that the

instruction was received by the addressed machine. When several machines are connected in parallel ( all with

the same machine number), it is disallowed for all of them to transmit at the same time thus, only the Master

machine replies (switch 4 is enabled).

NOTE

The Slave "Reply" settings are all ON or all OFF,

depending on the requirements of the system. The

Master "Reply" setting is always ON.

 VGA/XGA Switching

Computer based graphics is used in video production, in presentation applications, for education purposes and

more. It is frequently necessary to switch PC graphics from several sources to one or more acceptors. Figure 6

describes a typical VGA/XGA switching (VP-61RS) where six different input sources are switched to one

acceptor.

Perform the following steps:

1) Connect all component sources to the appropriate inputs of the switcher.

2) Connect XGA/VGA acceptor/s to the output/s of the switcher.

3) Connect PC or controlling unit.

4) Operate the switcher, sources and acceptors.

5) Select the required input to be switched, using front panel input selector pushbuttons.

Some useful tips:

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Always keep distances between sources and acceptors as short as possible.

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Keep all cable lengths identical, as final quality may be severely degraded if cables carrying different

components are of unequal lengths.

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Use best quality cables for interconnection. Component video signals carry high frequency information

which deteriorates rapidly when using low quality cables.

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Kramer-electronics VP-31 Manuel d'utilisateur Page 14

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