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Video Test Generator User Guide 243
AVSS
Analog Video Signal Swing
Class Format parameter setting - Analog video signal
Description 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 connectors equals the
product of AVSS multiplied by AVSC. The AVSS? query returns the current setting of
AVSS.
Command syntax AVSS level
level
0.000 to 1.000 volts (floating point accepted)
Query syntax AVSS?
Query response level
Other required
commands
Analog video must be enabled with the AVST command in order to output an analog video
signal. The FMTU command instructs the generator to use the new setting. The ALLU
command updates hardware to the new setting and redraws the test image.
Example 1 This example uses the AVSS command changes the output level of the NTSC format from
714mV to 500mV, and adds the revised format to the format knob list.
FMTL NTSC
FMTB
AVSS 0.5
FMTE
FMTA NTSC_1
DIRL fmt
DIRB
NAMI 1 NTSC_01
DIRE
DIRS
Example 2 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