MICROTRONIX DX-2200, Руководство пользователя

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DX-2200
– SD/HD-SDI Text & Graphics Inserter – User Manual
Page 53 of 103
4.8.1.11.1.3 Frame Counter Modes 2
– 4
Frame Counter Mode 2, 3, and 4 displays the frame count as a four digit ‘NNNN’, a six digit ‘NNNNNN’, or
an eight digit ‘NNNNNNNN’ number with leading zeroes. The count increments on every output frame and
will reset to 0 when all digits are ‘9’.
4.8.1.11.1.4 Frame Counter Modes 5
– 8
Frame Counter Mode 5, 6, 7, and 8 are the time clock modes and display a 24 hour clock in the format
HH:MM:SS, HH:MM:SS.S, HH:MM:SS.SS and HH:MM:SS.SSS respectively.
NOTE: The time shown in the time clock display was the time sampled from the clock at the time text was
being drawn into the frame buffer and does not accurately represent the time of an external event
such as start of frame entering or leaving the DX-2200.
4.8.1.11.2 F
RAME
C
OUNT
V
ALUE
The Frame Count can be set to a specific value at any time using Serial Commands.
The current frame count for Mode 1 can be set using the SFT:HH:MM:SS command. The current frame
count value used in Modes 2, 3 and 4 can be set by the SFNnnnn command. For the time clock modes, use
the command SFR:HH:MM:SS.SSS to set the time.
The three count values are independent of each other. All counters start at zero when the DX-2200 is
powered on or reset. The frame counts for modes 1 to 4 continue to be updated when the counter is not
displayed, but will pause when the video mode is switching and will lose sync with real time. The time clock
modes (modes 5 to 8) are not affected by the video and will always continue to count.
4.8.1.11.3 F
RAME
C
OUNTER
A
PPEARANCE
Commands are provided to configure the position, color, transparency and font of the Frame Counter.
The default text properties for the Frame Counter are:
Foreground: Red = 255, Green = 255, Blue = 255, Transparency = 000
Background: Red = 000, Green = 000, Blue = 255, Transparency = 255
Position: X = 0, Y = 0
The syntax for the commands (see Table 14) that configure the appearance of the Frame Counter is similar
to those used by the Text Overlay Commands. Many of the commands include a Field number (nn). The
Field number may be either one or two digits, for example 01 or 1. Only field number 1 is supported by the
Frame Counter. All other values reserved for future use.
The Field numbers used by the Frame Counter commands are independent of those used by the Text
Overlay. This means that Text Overlay Field 1 can still be used normally when the Frame Counter is
operating.
The fonts used by the Frame Counter are different than those used in the Text Overlay. All Frame Counter
fonts are fixed width and hard edge. The available font and size options are listed in the command table (see
Table 14). Setting the font to 000 selects the default font which is dependent on the video mode. To ensure
the frame counter is drawn at the video rate, it is recommended not to use a font larger than the default font.
When the appearance of the frame counter is changed while the counter is visible, a frame will be generated
that has no frame count displayed while the parameters are being changed. Unlike the Text Overlay
Commands, the Frame Counter Commands take effect immediately.
NOTE: The blending of transparent text and text background differs between the Frame Counter and the
Text Overlay Fields. When the same parameters are used, the appearance may not match. For Text
Overlay Fields, partly transparent text blends with the text background color and if the background is