Tektronix MTG100 - Manual (Page 111)

Hierarchy Display
3Ć52
MTG100 & MTG300 MPEG Generator User Manual
Table 3Ć56: PCR Stress dialog box parameters
Parameter Description
Interval Jitter The Interval Jitter test adds jitter to the period of the packets containing
a PCR.
PCR Interval Sets the frequency of PCRs used as the reference in the program
stream. You can set the value from 20 ms to 10000 ms in 1 ms steps.
Pattern Selects the waveform type of the waveform used to add jitter. You can
select Sine, Square, Triangle, Pulse, Sawtooth, or Random.
Period Sets the period of the waveform used to add jitter. You can set the
value from 5 to 3000 packets in 1 packet steps.
Amplitude Sets the amplitude of the waveform used to add jitter. You can set the
value from 10 ms to 10000 ms in 10 ms steps.
Pulse Width Sets the pulse width of the waveform used to add jitter. You can set the
value from 1 to (periodĂ-Ă1) packet(s) in 1 packet steps. This Pulse
Width parameter is available only when the Interval Jitter Pattern
parameter is set to Pulse.
Mode Sets the function mode of the Interval Jitter test. You can set Period or
Deviation. In the Period mode, amplitude variation of the waveform
selected in Pattern item is added to PCR interval currently set. In
Deviation mode, PCR interval varies by the amplitude variation of the
waveform selected in the Pattern item with reference to standard PCR
interval.
Value Jitter The Value Jitter test adds jitter to the program_clock_reference_base
value and the program_clock_reference_extension value in the
adaptation field.
Pattern Selects the waveform type of the waveform used to add jitter. You can
select Sine, Square, Triangle, Pulse, Sawtooth, Random, or Offset.
Period Sets the period of the waveform used to add jitter. You can set the
value from 5 to 3000 packets in 1 packet steps.
Amplitude Sets the amplitude of the waveform used to add jitter. You can set the
value from 0/27 MHz to 270000000/27 MHz (0 s to 10 s).
Pulse Width Sets the pulse width of the waveform used to add jitter. You can set the
value from 1 to (period -Ă1) packet(s) in 1 packet steps. This Pulse
Width parameter is available only when the Interval Jitter Pattern
parameter is set to Pulse.
Table 3Ć57: Bezel menucommands for the PCR Stress dialog box
Command Description
Interval Apply Applies the Interval Jitter test to the transport stream output.
Interval Undo Disables the Interval Jitter test from the transport stream output.
Value Apply Applies the value Jitter test to the transport stream output.
Value Undo Disables the value Jitter test from the transport stream output.
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