Figure 3-18: Stream View - Pcr Graph - Pcr Frequency Offset - Tektronix MTM400 User Manual

MTM400 MPEG Transport Stream Monitor User Manual
PCR Frequency Offset (PCR_FO)
The Frequency Offset graph shows the difference between the program clock
frequency and the nominal clock frequency (measured against a reference that is
not PCR or transport stream derived).

Figure 3-18: Stream view - PCR graph - PCR frequency offset

PCR Frequency Offset is a measurement of the error in the PCR frequency from
the specified 27 MHz; the MPEG specification sets the limits at ±810 Hz.
The Maximum PCR Frequency Offset can be adjusted for all PIDs as follows:
Tests screen PCR Tests section
parameter (right-click)
For individual PIDs:
PIDs screen Test: select PCR Offset
click) Max PCR frequency offset.
Right-click on the graph and set the limit for each PID.
PCR Frequency Offset (PCR_FO)
Max PCR overall jitter.
individual PID parameter (right-
Stream View
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