DX-2200
– SD/HD-SDI Text & Graphics Inserter – User Manual
Page 54 of 103
not fully visible, it also blends with the underlying image. For the Frame Counter, partly transparent
text does not blend with the frame counter background color.
4.8.1.11.4 M
ANUAL
M
ODE
When the Frame Counter mode is set to 0 the automatic frame count display is turned off. In this case, an
ASCII string can be assigned to the Frame Counter Field using the SF01T command. The text can then be
drawn using the SFnnD command, or cleared using the SDnnH command. These commands render the text
to the active frame buffer instead of the spare buffer. In some applications it is possible to display a short
text string at higher speed using this mode than would be possible with the Text Overlay Commands.
The Frame Counter and the Text Overlay use the same active and spare frame buffers. If Text Overlay
Commands cause the spare and active buffers to switch, any text that was drawn into the active buffer with
the SFnnD command will no longer be visible. To display the text again, the ’SF1D’ must be used to redraw
the text in the new active buffer.
Notes:
If the configuration is saved to flash, any text that has been by displayed using the Frame Counter in
Manual mode will not be restored when the unit powers up. Only text fields displayed using the Text Overlay
Commands will be restored.
After receiving the SFnnD, the Frame Counter will render text beginning after the frame buffer has
completed output of the video lines where the text will be located. If other commands are received prior to
rendering that change the text parameters or Frame Counter mode, the text will be rendered with the new
parameters or rendering may be cancelled by the new commands. Control software that sends commands
to the unit should include appropriate delays after sending the SF1D command to allow drawing to complete
before changing the Frame Counter parameters.
4.8.1.11.5 S
AMPLE
F
RAME
C
OUNTER
C
OMMANDS
4.8.1.11.5.1
Frame Counter Example 1:
Starting with DX-2200-TI using the factory defaults, turn on the frame counter in the upper left corner of the
screen with white text on a blue background and set the current frame counter value to 11:25:00
SF1BA000
SFT:11:25:00
SFM1
4.8.1.11.5.2
Frame Counter Example 2:
Show the message "Frame Counter (hh:mm:ss:ff)" in the top left corner of the video and show the frame
counter below it. The text properties are set for yellow text on a blue background for both.
S1X50
S1B0
S1BA0
S1T"Frame Counter (hh:mm:ss:ff)"
S1S
SF1Y50
SF1X50
SF1B0
SF1BA0
SFM1
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