Black Box KV812A User Manual
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CHAPTER 5: Operation
5.2 Using the Front-Panel Pushbutton
5.2.1 C
HANNEL
S
ELECTION
During normal ServSwitch USB operation, you can use the Switch’s front-panel
pushbutton to select which CPU channel (CPU port) you want to access and
control. Press and release the key once to select the next higher-numbered CPU
channel; press and release the key repeatedly to manually cycle through the
channels. Bear in mind that depending on how position 8 of the Switch’s DIP
switch is set, the Switch will change to either (a) the next active channel or (b) the
next channel in sequence, regardless of whether the channel is active or not (see
Section 3.3
pushbutton to select which CPU channel (CPU port) you want to access and
control. Press and release the key once to select the next higher-numbered CPU
channel; press and release the key repeatedly to manually cycle through the
channels. Bear in mind that depending on how position 8 of the Switch’s DIP
switch is set, the Switch will change to either (a) the next active channel or (b) the
next channel in sequence, regardless of whether the channel is active or not (see
Section 3.3
). One second after you switch to a new channel, enumeration is
performed (see Section 3.1).
5.2.2 V
IEWING THE
F
IRMWARE
R
EVISION
For technical-support purposes, it might be necessary to find out the firmware-
release version of the control software in your ServSwitch USB. Before calling Black
Box Tech Support about a problem, turn off the Switch and then turn it back on
while holding down the front-panel pushbutton (hold down the button for five
seconds). This will cause the Switch to briefly show the letter “F” alternating with
the firmware’s version number, one digit at a time, on its front-panel 7-segment
display, followed by the equals sign (“=”). For example, if the Switch is using
firmware revision 1.02, it will display the letter “F”, then the digit “1”, then the
letter “F” again, then the digit “0”, then the letter “F” one more time, then the
digit “2”, and finally the “=” character. After displaying the firmware revision, the
Switch will select CPU channel #1 and perform enumeration (see Section 3.1), and
then the display will begin showing what it normally does (see Section 5.3).
release version of the control software in your ServSwitch USB. Before calling Black
Box Tech Support about a problem, turn off the Switch and then turn it back on
while holding down the front-panel pushbutton (hold down the button for five
seconds). This will cause the Switch to briefly show the letter “F” alternating with
the firmware’s version number, one digit at a time, on its front-panel 7-segment
display, followed by the equals sign (“=”). For example, if the Switch is using
firmware revision 1.02, it will display the letter “F”, then the digit “1”, then the
letter “F” again, then the digit “0”, then the letter “F” one more time, then the
digit “2”, and finally the “=” character. After displaying the firmware revision, the
Switch will select CPU channel #1 and perform enumeration (see Section 3.1), and
then the display will begin showing what it normally does (see Section 5.3).
5.2.3 A
UTOSCANNING
To have the ServSwitch USB start “autoscanning,” press the Switch’s front-panel
pushbutton and hold it down for five seconds. The Switch will disconnect the USB
bus and then cycle through your CPU channels continuously. While it does this it
will show a circling pattern on its front-panel display (see the next section) and will
briefly show each channel’s video signal (or lack of video signal) on the shared
monitor. You can stop the scan at a particular port by pressing and releasing the
front-panel pushbutton when the scan reaches that port. (With the ServSwitch USB
Plus, you can also stop the scan by sending a command from the PS/2 keyboard
[see Section 5.4], by clicking the PS/2 mouse to the next higher or lower port [see
Section 5.5
pushbutton and hold it down for five seconds. The Switch will disconnect the USB
bus and then cycle through your CPU channels continuously. While it does this it
will show a circling pattern on its front-panel display (see the next section) and will
briefly show each channel’s video signal (or lack of video signal) on the shared
monitor. You can stop the scan at a particular port by pressing and releasing the
front-panel pushbutton when the scan reaches that port. (With the ServSwitch USB
Plus, you can also stop the scan by sending a command from the PS/2 keyboard
[see Section 5.4], by clicking the PS/2 mouse to the next higher or lower port [see
Section 5.5
], or, if you have a Remote-Control Module, by pressing its SELECT
button [see Section 5.6].) When you stop the scan, enumeration is performed (see
Section 3.1
Section 3.1
) and then full USB access and control resumes. You can set how long
the Switch pauses on each CPU channel, and whether the Switch includes empty
channels, when it autoscans; see Sections 3.2 and 3.3 respectively.
channels, when it autoscans; see Sections 3.2 and 3.3 respectively.