Delay And Phase Parameters; Figure 10.2 Delay And Phase Parameters - Rigol HDO4000 Series User Manual

Measurements
10.1.3

Delay and Phase Parameters

Source A
Source B
1. Delay(r-r): indicates the time difference between the threshold middle values of
the rising edge of Source A and that of Source B. Negative delay indicates that the
rising edge of Source A occurred after that of Source B.
2. Delay(f-f): indicates the time difference between the threshold middle values of
the falling edge of Source A and that of Source B. Negative delay indicates that the
falling edge of Source A occurred after that of Source B.
3. Delay(r-f): indicates the time difference between the threshold middle values of
the rising edge of Source A and the falling edge of Source B. Negative delay
indicates that the rising edge of Source A occurred after the falling edge of Source
B.
4. Delay(f-r): indicates the time difference between the threshold middle values of
the falling edge of Source A and the rising edge of Source B. Negative delay
indicates that the falling edge of Source A occurred after the rising edge of Source
B.
5. Phase(r-r): indicates the phase deviation between the threshold middle values of
the rising edge of Source A and that of Source B. The phase formula is as follows:
Wherein,
Period
6. Phase(f-f): indicates the phase deviation between the threshold middle values of
the falling edge of Source A and that of Source B. The phase formula is as follows:
HDO4000 User Guide
152

Figure 10.2 Delay and Phase Parameters

PhaseA
PhaseA B
represents Phase(r-r),
R R
represents period of Source A.
sourceA
PhaseA
Period
Delay
DelayA B
R R
B = × 360
R R
Period
sourceA
DelayA B
represents Delay(r-r), and
R R
DelayA B
F F
B = × 360
F F
Period
sourceA
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