PCR Jitter
Display the PCR jitter measured by the PCR-AC measurement method.
Screen Items
| Item | Description |
|---|---|
| Reference Bitrate | Displays the reference bit rate for PCR-AC calculations. |
| PID | Display the PID of the PCR packet. |
| Ave, Min, Max | Displays the average, minimum and maximum value of the jitter (or interval). |
| Jitter Graph | Display the time series graph of the jitter value. The maximum number of PCR values used for jitter calculation is 256. In the case of TS with many PCR packets per unit time, the graph may not be drawn to the left end of the area. |
| Error Threshold | The jitter error threshold is indicated by a yellow line. The value is ±500 (ns) according to ETR290 1.4. |
Operation
| Function | Description |
|---|---|
| V-axis adjust | Change the jitter amount scale. |
| H-axis adjust | Change the time scale. |
| Format Select | Switches the display between PCR jitter value/PCR interval value. |
| Config | Set the reference bit rate and other settings. |
Warning
- PCR-AC is only working for constant bit rate (CBR) streams. It does not work properly for variable bit rate (VBR) streams.
- To calculate PCR-AC, the reference, ideal bit rate for the stream must be set.
Set the appropriate value for each stream.
By default, the reference bit rate is not set and the following message is displayed.