Operating Instruction
3.6.2.3 Cables and video switchers
Systems sometimes have an extremely complex design.
Long video cables and various "black boxes" may be connected between the computer and
monitor. The video signal can then no longer satisfy the requirements for a good picture
quality
Measure the video signal at the monitor input using an oscilloscope
3.6.2.4 Isolation between video ground and protective earth
Systems designed according to this principle can only be correctly operated using the
SCD 1815-I 18" LCD desktop monitor (6GF6220-1MV).
All other 15-kHz products do not have isolation between the video ground and protective
earth!
Select correct monitor, make correct ground connections.
3.6.2.5 Electrical interferences
The interference susceptibility of digital and analog monitors differs. The systems were
previously defined for the analog technology of the monitors, and no LCD monitors existed
then. It is necessary to avoid possible interferences on the video signals:
•
Check the ground connections
•
Avoid earth loops
•
Consult system experts.
3.6.3
Special measures for LCD monitors of 15 kHz and above
3.6.3.1 Input of video timing
The "AUTO-ADJUST" function was designed for pictures with a bright background, but not
for pictures with a black background and little video information.
The consequence is that the monitor's processor cannot recognize the left picture edge.
This function in the OSD menu can be used for testing. If you do not achieve a good result,
proceed as follows:
The OSD menu contains a function for entering the timing data. The timing table contains
previously known data.
Note:
These data may differ depending on the hardware version and the system software.
LCD-Monitor SCD 1515-E
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DOC-No.: B30058DE8.doc
