Extron electronics VN-Matrix 250 Series, Руководство пользователя

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14. Enter the active horizontal resolution in the
HSize
field and the active vertical resolution
in the
VSize
field (see figure 68 ,
9
on the previous page).
15. Copy the values in the
digFirstPixel
and
digFirstLine
fields of the
Device Status
panel to the
FirstPixel
and
FirstLine
fields (see figure 68 ,
¢
).
16. Click the
Update
button (see figure 67 , 1 on page 81). The
User Source Format
settings are copied into the
User.Source.Config
file of the VN-Matrix device
designated as the controller.
17. Press
Save Source
(see figure 68 ,
£
) to save the
User.Source.Config
file of the
VN-Matrix device designated as the controller.
With the
mode
drop-down list still set to auto, the VN-Matrix device should now select
the new user mode in the
currentMode
field.
18. Display a moiré pattern and check for clocking errors in the same user format area.
Clocking errors appear as vertical banding on the displayed image. If clocking errors
exist, select the user mode from the
Name
drop-down list and adjust the value in the
PixelsPerLine
field. Each time you enter a new value in the field, you must click
Update
, click the
Save Source
button, and reboot the VN-Matrix controller and
encoder. Repeat this process until the clocking error is gone.
After you create a custom input mode, if the decoder does not find a suitable output mode,
you need to create a custom output mode (see
Custom Output Modes , on the next
page).
NOTE: A stable video signal on the loop output of the encoder does not necessarily
indicate that the signal is being properly recognized. An encoder generates the
loop output signal by passing sync directly from the input connector to the output
connectors (a pass-through), so it is not dependent on any previously stored modes
to create a loop output.
TIP: Before creating the custom mode, be aware that the encoder can report
inaccurate values for active horizontal pixels (
digHSize
) and active vertical lines
(
digVSize
).
The encoder analyzes the content displayed by the source PC to determine these
values. As a result, if your source is displaying a 100 pixel by 100 pixel white box
against a black background, the encoder can report a digHSize value of 100, and a
digVSize value of 100 as well.
It is a good practice to ensure that your PC is displaying a full image, preferably full
white or a moiré pattern, before creating a custom input mode.
VNM 250 • Configuration with the VNM 250 GUI 83