Tektronix MTG100 Bedienungsanleitung PDF herunterladen (Seite 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 menu commands 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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