Issuing Commands To An Extron Av Switcher Via The Rs-232 Pass Thru Port; Selecting An Input Using Sis Commands - Extron electronics SW2 USB User Manual

Selecting an input on an AV Switcher via contact closure
To make input selections on a connected AV switcher via contact closure, you must
place the SW USB in loop 0 mode. When the ground pin of the Contact port is connected
to one of its other pins by by one of the methods described on the previous page, the
SW USB sends the input selection SIS command X!
the RS-232 Pass Thru port to the AV switcher. The AV switcher then switches to the selected
input (see "Issuing Commands to an Extron AV Switcher via the RS-232 Pass Thru Port,"
below.

Selecting an input using SIS commands

You can also select an input via an RS-232 connection using SIS commands (see the
"SIS Programming and
explanations).
If an Extron AV switcher is connected to the RS-232 Pass Thru port, the SIS commands that
you enter can also be passed through to the connected switcher, even if the connected
switcher has more inputs than the SW USB (see "Issuing Commands to an Extron AV
Switcher via the RS-232 Pass Thru Port," below).
Selecting an input using the keyboard (SW4 USB Plus only)
When a keyboard is connected to an emulation port and the keyboard emulation
DIP switch (switch 2) is set to On, you can switch to a desired input by pressing
<Ctrl> + <Shift> + <input number> (for example, to switch to input 3, press
<Ctrl> + <Shift> + <3>).
"Host Emulation (SW4 USB Plus
See
SW4 USB Plus for host emulation.
NOTE:

Issuing Commands to an Extron AV Switcher via the RS-232 Pass Thru Port

To configure the SW USB to pass commands through the RS-232 Pass Thru port to a
connected AV switcher, you must select a loop mode. The loop mode determines which
types of commands are passed through this port. The two loop modes are:
Loop 1 mode — In this mode, SIS commands sent to the SW USB via an RS-232
•
interface are passed through the RS-232 Pass Thru port to the AV switcher. The RS-232
interface is the only method of issuing commands to the AV switcher.
Loop 0 mode (default) — In this mode, in addition to passing through SIS commands
•
sent from the computer RS-232 interface, the SW USB also passes input selections
entered via contact closure or the front panel buttons through the RS-232 Pass Thru
port to the AV switcher.
Selecting the loop mode
To select the loop mode, enter one of these commands:
For loop 1 mode: E
•
For loop 0 mode: E
•
The table
Control" section for a list of available SIS commands and their
If you want to use the <Ctrl> + <Shift> + <input number> key combination
for another purpose, you can disable the keyboard switching feature using
the SIS command E X@
H
Programming and Control" section for more information).
}
1LOOP
} command.
0LOOP
on the next page summarizes the two loop modes.
(where X! is the input number) through
!
Only)" on page 17 for information on setting up the
} (see the
Hot key commands
USBC
SW USB Series • Operation
in the "SIS
14