TROUBLESHOOTING
31
5. Troubleshooting
Monitor
There isn’t a picture.
Check the power supply connection at the local and remote unit. Is the
Power
(Red
LED) at the Local unit illuminated (see page 25)? If not, the internal power-supply
may be damaged or there may be an internal error.
Check that the Interconnection cable is connected at the Local Unit and the Remote
Unit. Is the
Link Status
LED illuminated (see page 25)? If not, there may be a
problem with the Interconnection cable:
Are there
Errors through data transmission over CATX Cable (Cable too long, too
high attenuation or too much EMI interference)? Is the
Data Error
LED illuminated
or blinking (see page 25)? If yes, check cable length and environment.
Video Okay
LED is dark: CPU does not provide a video signal – Check settings of
the graphic card. Try out, connecting a monitor to the local output, to see, whether
there is a signal or not.
‘Stepping’ pictures on displaying movies
On high resolutions, the amount of data transmitted each second, expires the
capability of the data link. Therefore the data have to be reduced before
transmitting. This is done in a first step by a so called RLE (=Run Length
Encoding) algorithm. If this (loss less) compression does not reach the required
amount, frames are dropped: The frame actually transmitted is transmitted
completely even if the graphic card generates a new frame. This new frame is
discarded. Because of this behaviour, the count of frames per second (fps) may be
reduced to a value, where ‘stepping’ pictures are seen.
How to solve the problem: Please use a lower resolution, which is slightly higher
than the resolution of the recorded movie. Please see, that most (actual) movies do
have only a low resolution of approx. 720x480 (NTSC) or 704x576 (PAL) or even
320x256 (VHS). If the monitor provides a higher resolution, it may provide the
scaling of the pictures. The picture quality is the same, if the monitor or the CPU
does the scaling.
How to solve the problem: Set the color depth to 16/24Bit AUTOSELECT. On
moving pictures, the human eye is not able, to see differences between so many
colors. A reduction to 16Bit reduces the amount of data without (visible) effects.
PS2-Keyboard
The PC boots fine with no error messages but the keyboard does not work at all
Wrong cable plugged in, keyboard and mouse cables reversed.
Summary of Contents for ACS4422A-R2
Page 4: ...DVI D CATX FIBER KVM EXTENDER 4 ...
Page 49: ...NOTES ...
