Kramer Electronics VP-31 User Manual
Page 14
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:
Always keep distances between sources and acceptors as short as possible.
Keep all cable lengths identical, as final quality may be severely degraded if cables carrying different
components are of unequal lengths.
Use best quality cables for interconnection. Component video signals carry high frequency information
which deteriorates rapidly when using low quality cables.