Black Box KV812A User Manual
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SERVSWITCH™ USB AND USB PLUS
5.3 Interpreting the Status Display During Normal Operation
The ServSwitch USB’s front-panel 7-segment status display usually shows the
number of the currently selected computer channel. On the ServSwitch USB Plus
models, the dot LED alongside it also flashes in response to data from the shared
PS/2 keyboard or mouse, as shown in the top illustration in Figure 5-2 below.
number of the currently selected computer channel. On the ServSwitch USB Plus
models, the dot LED alongside it also flashes in response to data from the shared
PS/2 keyboard or mouse, as shown in the top illustration in Figure 5-2 below.
When you change CPU channels, this display will flash as shown in the second
illustration below, more and more quickly, until the USB “enumeration” process is
complete (see Section 3.1); until the display stops flashing, the channel cannot be
changed again.
complete (see Section 3.1); until the display stops flashing, the channel cannot be
changed again.
If you hold in the Switch’s front-panel pushbutton for five seconds, the Switch
starts autoscanning (see Section 5.2.3). The display will alternately (a) show the
current channel number and (b) light each of its outer six LED segments, one
after the other, in a clockwise sequence, as shown in the third illustration.
current channel number and (b) light each of its outer six LED segments, one
after the other, in a clockwise sequence, as shown in the third illustration.
Figure 5-2. The front-panel status display during regular operation.
DISPLAY SHOWS:
Channel number 1 through 4,
steadily lit
As above, with flashing dot in
lower right-hand corner
Zero
Channel number 1 through 4,
flashing
Alternately, channel number and
clockwise progression of lit
segments
MEANING:
That channel is selected
USB Plus models only: Switch is
receiving PS/2 keyboard or
mouse data
Video is disabled, but not controls
Switch is performing
enumeration
Switch is in autoscan mode,
scanning from channel to
channel, pausing at each one
for user-selected period