Kramer Electronics VS-626 - Manual (Page 17)

Connecting the VS-828 Video / Audio Matrix Switcher
KRAMER: SIMPLE CREATIVE TECHNOLOGY
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6.4 RGB/YUV Switching with RS-232 (PC Control)
Figure 7 describes a typical component video/RGB setup where every video
signal is composed of three sub signals (components), which should be
switched together (also valid for YUV components).
For RS-232 control of the component matrix switcher, an additional piece of
equipment would be required. Since RS-232 can only be used for control
between 2 pieces of equipment (e.g. a PC and a switcher), we need a method
of “distributing” the RS-232 to all 3 machines. The Kramer VP-14 “RS-232
Port Extender” is designed for this purpose.
Perform the following steps (as necessary):
1. Connect the RGB sources to the VIDEO INPUTS connectors of the
Matrix Switchers, connecting the “R” components to first Matrix
Switcher , “G” to the second, and “B” to the third. Make sure that each
component of a video source is connected to the same input number on
all three switchers.
2. Similarly, connect the RGB acceptors to the VIDEO OUTPUTS
connectors of the three Matrix Switchers.
3. If the video sources are synchronized, and vertical interval switching is
desired, connect sync sources to all 3 machines, and select to work with
“Ext. Sync” (selector switch pressed in).
4. Assign all 3 machines as Self Address # 1 (see Table 4).
5. Set dipswitch
# 5 (Reply) of the first machine to ON. Set to OFF for the
other machines.
6. Set dipswitch # 8 of all the machines to ON (RS-232 communication
between switchers and external controller).
7. Connect the serial port of the PC to a port on the VP-14, and connect
each switcher to a VP-14 port. Configure the dipswitches of the VP-14
for the 4 ports, which were connected.
8. Operate the Matrix Switchers, PC, VP-14, RGB sources and RGB
acceptors.
9. The inputs can now be switched to the outputs. This is done via the front
panel switches of the first switcher, and/or via the PC.