VS-1616SDIunit is the Slave (with DIP 6 set ON enabling the Slave mode).
On the Slave VS-1616SDIunit, the MATRIX and STATUS Displays do not illuminate and the STATUS Display shows the following message:
Keyboard LOCKED
However, the STATUS Display on the Slave VS-1616SDIunit dynamically shows1 all changes made from the Master VS-1616Vunit (which are implemented also on the Slave unit).
Front panel control is via the Master VS-1616Vunit, on which the front panel buttons are unlocked and both the MATRIX and STATUS Displays illuminate.
6.4Connecting a Control Interface
Connect a control interface (RS-232 or RS-485) unless operating a VS-1616SDIas a stand alone 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 application2, 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.
Choose the RS-232 control interface, for a range of up to about 25 meters used for a point-to-point connection.
Choose the RS-485 control interface, to operate the switcher for a distance of up to 1000 meters.
6.4.1Connecting 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 6 illustrates.
1 Albeit with an LCD Display that does not illuminate 2 See section 6 .2
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