Tektronix SPG8000A User Manual page 105

ID Text overlay settings
SPG8000A User Manual
installed, the default logo is Telestream_logo_500x125.bmp.
If users remove the factory-provided logo files and added their own
custom files, then the default logo will be the oldest file installed in the
SDI7/Logo directory.
Note:
The position of the logo overlay is referenced from the lower right of the
active raster area.
X Position: Enter the horizontal position of the logo. The position is set as
•
a percentage of active picture width. You can set the value from -100.0%
to -1.0% in 0.1% steps.
Y Position: Enter the vertical position of the logo. The position is set as a
•
percentage of active picture height. You can set the value from -100.0% to
-1.0% in 0.1% steps.
Use these settings to create text or to select a text file that will be overlaid on the
output test signal, and to set the display position of the text.
Note:
You can store overlay functions, including text, in the instrument presets so
the overlay is restored on power up.
To display a text overlay, you need to either enter a text string or create a text file
(.txt) and use FTP or a USB memory device to copy the file to the SDI7/TEXT
directory on the instrument. The file must be installed in the TEXT folder. Files
installed in the wrong directory location will be ignored by the instrument. (See
Transfer or install user files.)
When a text file is used, any Unicode character supported by the default font can be
displayed. The text file can be encoded as plain 7-bit ASCII text, or UTF-8
encoding when extended Unicode characters are used. The text file can also include
embedded newline characters to create text overlays spanning multiple lines.
When the string is entered from the front panel, it is limited to 30 characters in
length, and can contain only standard ASCII characters.
The instrument uses a TrueType font to render text overlays; the default typeface is
Deja Vu Sans. The font file is named "default.ttf" and is stored in the SDI7
directory of the instrument memory.
The instrument supports Latin, Cryillic, Greek, and symbol character sets for use
with the text overlay. Using FTP, you can download an alternate TrueType font
file. Make sure that the font file is renamed to "default.ttf" and that the instrument
is rebooted for the new font to take effect.
Figure 24 shows the SDI Overlay ID Text settings.
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