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AVSS
Class
Description
Command syntax
Query syntax
Query response
Other required
commands
Example 1
Example 2
Example 3
882 Video Test Instrument User Guide (Rev A.35)
Analog Video Signal Swing
Format parameter setting - Analog video signal
Sets the maximum peak-to-peak swing for all three analog video channels. The actual
peak-to-peak swing of the analog video signals at the output equals the product of AVSS
multiplied by AVSC. The AVSS? query returns the current setting of AVSS.
AVSS level
level
0.000 to 1.000 volts (floating point accepted)
AVSS?
level
Analog video must be enabled with the
signal. The
FMTU
command instructs the generator to use the new setting. The
command updates hardware to the new setting and redraws the test image.
This example uses the AVSS command changes the output level of the NTSC format from
714mV to 500mV.
FMTL NTSC
FMTB
AVSS 0.5
FMTE
FMTA NTSC_1
This example enables analog video, and sets the video swing.
AVST 2
// Select RGB component color video in buffer
AVSS 0.714
// Set to 714 mV in buffer
FMTU
// Update hardware to current buffer contents
This example changes the sync level from 286mV to 200mV, and sets the video output
level at 500mV.
FMTL NTSC
FMTB
ASSS 0.2
AVSS 0.7
FMTE
FMTA NTSC_1
AVST
command in order to output an analog video
ALLU
561
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