Kramer Electronics VS-162AVM - Manual (Page 21)

Connecting a Control Interface
17
17
However, the STATUS display on the Slave unit dynamically shows 1
Front panel control is via the Master unit, on which the front panel buttons
are unlocked and both the MATRIX and STATUS displays illuminate.
all
changes made from the Master unit (which are implemented also on the
Slave unit).
9 Connecting a Control Interface
Connect a control interface (RS-232 or RS-485) unless operating a unit as a
standalone unit without any control device (that is, with control from the front
panel or IR port, and not via a remote controller or a PC).
The control interface must be identical on each switcher in the series of
16x16 matrix switchers; either RS-232 or RS-485. One control interface
suffices. Do not use both RS-232 and RS-485 control interfaces in the same
configuration. For example, in an interconnected varied-format 16x16
switcher application 2
To operate the switcher at a range of up to 25 meters with a point-to-point
connection, use the RS-232 control interface.
, if the switcher that connects to the PC connects via
the RS-232 control interface, each switcher must interconnect via the
RS-232 control interface and not via the RS-485 control interface.
To operate the switcher at a range of up to 1000 meters, use the RS-485
control interface.
9.1 Connecting the RS-232 Control Interface
Connect several switchers (from the series of 16x16 matrix switchers) and
the control unit in an RS-232 daisy chain arrangement, with or without
using a null-modem adapter, as Figure 9 illustrates.
The RS-232 daisy chain switcher arrangement is transparent. This lets you
arrange the switchers (from the series of 16x16 matrix switchers) according
to your requirements, and not according to a fixed sequence dependent on
the MACHINE # and/or MACHINE ADDRESS #.
You can connect any of the following:
• Two units, with a null-modem adapter (see section 9.1.1 ) or
without a null-modem adapter (see section 9.1.2 )
• The 9-pin D-sub COM port of the PC to a unit with a null-modem
1 Albeit with an LCD Display that does not illuminate
2 See section
7.2