Tektronix MTG100 Manual do Utilizador descarregar pdf (Página 151)

Adding Jitter to PCRs (MTG300 only)

3Ć92

MTG100 & MTG300 MPEG Generator User Manual



#  '#%  %# %%# $ !!

&#  !%$ %

 %#'  $

%%# "&#

!%&  $

#   %$

Figure 3Ć33: Changing the PCR interval in the Deviation mode

Value Jitter Function

The Value Jitter function, accessed through the PCR Stress dialog box (see

Figure 3-31), allows you to add jitter to the program_clock_reference_base value

and the program_clock_reference_extension value in the adaptation field of

transport stream packets. You can use this function to modulate the data values

of the PCRs away from their correct values. Refer to PCR Stress Dialog Box on

page 3-51 for information about the dialog box parameters.

Figure 3-34 shows the relationship among these parameters and how the PCR

values (program_clock_reference_base value and program_clock_reference_ex-

tension) change when Sine is selected as a jitter-pattern waveform. The PCR

values varies by the value of sine waveform defined by the amplitude and period.

The PCR period does not change.

Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com

1 2 ... 146 147 148 149 150 151 152 153 154 155 156 ... 249 250

Sem comentários

Tektronix MTG100 Manual do Utilizador Página 151