Black Box ACS250A-R2 用户手册
14
SERVSWITCH™ BRAND FIBER KVM EXTENDER II AND II-SM
The brightness and contrast of the video signal are adjusted automatically before
digitizing the signal. This ensures the best possible video quality without requiring
configuration or adjustment by the user.
configuration or adjustment by the user.
When the local unit detects that the CPU has switched to a different resolution,
refresh rate, etc., it will adjust all digitizing parameters automatically. Only a few
seconds later, you will again have a sharp, crisp, and colorful image without having
to move any switches or turn any dials. The local unit checks all video parameters
continuously, so video quality is maximized at all times.
seconds later, you will again have a sharp, crisp, and colorful image without having
to move any switches or turn any dials. The local unit checks all video parameters
continuously, so video quality is maximized at all times.
After the local unit digitizes the video, it transmits the digital data across the
fiber as a serial stream. Inside the remote unit, the signal is converted back into the
original analog values, which it outputs from its “Video” connector. The resolution
of the output signal is always the same as that of the original input, but its vertical
refresh rate is kept constant (by dropping or repeating frames). No matter what
their input refresh rate is:
original analog values, which it outputs from its “Video” connector. The resolution
of the output signal is always the same as that of the original input, but its vertical
refresh rate is kept constant (by dropping or repeating frames). No matter what
their input refresh rate is:
• DOS-mode resolutions will be output at a refresh rate of 85 Hz.
• Non-DOS-mode resolutions up to 1152 x 864 will be output at a refresh rate of
75 Hz.
• 1280 x 1024 and 1600 x 1200 resolution will be output at a refresh rate
of 60 Hz.
Make sure that the remote monitor can support your chosen resolution at the
corresponding rate. If it doesn’t, the display will look bad or be totally blank.
The remote unit will always output separate horizontal and vertical sync from its
“Video” connector on the standard VGA Hsync and Vsync pins (HD15 pins 13 and
14). If you need to connect a remote monitor that uses some other type of sync
and/or separate BNC connectors rather than an HD15 VGA connector, call Black
Box Technical Support for assistance.
14). If you need to connect a remote monitor that uses some other type of sync
and/or separate BNC connectors rather than an HD15 VGA connector, call Black
Box Technical Support for assistance.
The local unit will support DDC (display data channel) and provide information to
the local workstation about its video capabilities. Modern workstations will evaluate
this information and set up their graphics output according to the supported
resolutions of the extender.
the local workstation about its video capabilities. Modern workstations will evaluate
this information and set up their graphics output according to the supported
resolutions of the extender.
3.2 Mouse Compatibility
The extender supports all common PS/2 style mice and pointing devices including
two-button mice, three-button mice, wheel mice such as the Microsoft
two-button mice, three-button mice, wheel mice such as the Microsoft
®
IntelliMouse
®
, trackballs, etc.