Special Measures For Lcd Monitors Of 15 Khz And Above; Input Of Video Timing; Processing Of Synchronization Signals; Suppression Of Interfering Signals - Siemens SCD 1815-E Operating Instruction

3.8. Special measures for LCD monitors of 15 kHz and above

3.8.1.

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.
Procedure:
Call OSD menu
-
- Select "Utilities" menu and "Installation RGB mode" submenu using Enter key.
- Enter video data (see example for WF 470 system, appendix).
Notice
Contact the hotline if video data are missing or deviate, or contact a specialist to measure the
timing data if necessary.
It may be necessary to optimize the picture using "Frequency" and "Phase".
If the picture is offset, select "Horizontal position" or "Vertical position".
Caution: these data are deleted by a factory reset!!! (please record
3.8.2.

Processing of synchronization signals

The signal processor can be switched on and off using the switch "A5". This can process the
synchronization signals, and filter out faults in certain phases of the signal in a number of cases.
Test by switching the signal processing on and off.
3.8.3.

Suppression of interfering signals

Changes in the H/V pulses trigger a change in the timing. The monitor searches for the newly
generated timing. This process takes 1 to 4 seconds, and the picture is not connected through for this
period. Interferences on the same pulses cause the same effect, and the picture fails for a longer
period. This time can be significantly reduced using the "Suppress interfering signals" function.
Call OSD menu. Select "Utilities" menu, "User setting" submenu, and then "Suppress interfering
-
signals" using Enter key. Switch: ON/OFF.
LCD-Monitor SCD 1815-E page 43 / 52
Operating Instruction
data).
DOC-Nr.: B30055DE6.doc