KRAMER: SIMPLE CREATIVE TECHNOLOGY
Cascading Vertical Interval Video-Audio Matrix Switchers
20
Figure 13: Cascading Individual Units in a Control
Configuration via RS-232 and RS-485
7.3.2
Control Configuration via RS-485
To cascade up to eight individual
VS-402XL
/
VS-602XL
units, via RS-485
(with control via a Master Programmable Remote Control system such as the
Kramer
RC-3000
), do the following:
1. Connect the composite video sources and acceptors, as well as the appropriate
audio sources and acceptors, as section
6
describes.
2. Connect the “A” (+) and “B” (-) PINS on the RS-485 terminal block port of the
RC-3000
to the “A” (+) and “B” (-) PINS, respectively, on each of the eight
VS-402XL
/
VS-602XL
units. (If using shielded twisted pair cable, the shield is
usually connected to the “G” (Ground) PIN of the first unit).
3. Set the first
VS-402XL
/
VS-602XL
unit as MACHINE # 1 and the following
seven
VS-402XL
/
VS-602XL
units as MACHINE # 2 to MACHINE # 8,
according to
Table 4
.
4. Set the SETUP dipswitches on the
VS-402XL
/
VS-602XL
unit, as follows: