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4. Hot Keys
The K4u
+
uses hot-key combinations to invoke various functions.
Typically, you hold down two predefined hot-keys and then
press a third key ie, you press all three keys together. For
example, you can switch channels on the K4u
+
by holding down
the two hot-keys, then pressing 1, 2, 3 or 4.
The default hot-key combination is Alt + Space. But you can
specify a different combination with DIP switches A1 and A2;
for details, see section 3.
4. 1 General hot keys
Press and hold down the hot keys. Then press:
1 (QWERTY only) Selects channel 1.
2 (QWERTY only) Selects channel 2.
3 (QWERTY only) Selects channel 3.
4 (QWERTY only) Selects channel 4.
4 (NUMPAD only) Switches down to the next channel.
6 (NUMPAD only) Switches up to the next channel.
C Emulates smart card removal and insertion on the active
channel.
U Switches the hot-plug port to the active channel.
* (NUMPAD only) Toggles exclusive mode when a computer is
shared between two K4u
+
switches.
0 (QWERTY only) Toggles ‘mute all audio’. Use this
combination to mute all audio output.
Backspace
Toggles mixed audio mode for the selected channel. Use this
combination to mute a single channel.
Scroll-Lock
Disables channel changing with the Scroll Lock key. (When
enabled, two quick key presses switches up to the next
channel.)
Esc
(Sun USB keyboards only) Disables channel changing with the
single ‘channel’ keys. See section 7.1.5.
Note:
You must apply this hot-key combination every time
the switch is reset or power cycled.
S Re-reads DIP switch settings and reconfigures the K4u
+
.
I Initiates the serial port In System Programming mode. You
must press I twice; see the note below.
H (Available for USB and legacy Sun computers only)
Transmits ‘Stop-A’. Press H twice; see the note below.
R Resets the main processor and warm boots the switch. You
must press R twice; see the note below.
Note:
For I, R and H hot-key combinations, press the third
hot-key twice. This means you must hold down the hot keys,
then press and release the third key twice while still holding
down the hot keys. Do not press any other keys during the
sequence. For example, to reset the main processor, the hot-
key combination is Alt+Space+R, R.
4. 2 Hot keys for legacy Sun computers
P Toggles the channel’s keyboard power line.
Q Transmits LH shift & keyboard power key.
N Emulates holding down ‘Stop-N’ as part of a Basic Assurance
Test (BAT) while the keyboard is booting up.
F Transmits ‘Front’ key.
T Transmits ‘Stop’ key.
G Transmits ‘Again’ key.
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