5-9
IM 704210-01E
Setting the Sampling Mode and Measurement Function (Item)
5
Explanation
Measurement range
Measurement range is shown below. This measurement is available only when time stamp mode
has been selected.
0 to 360 deg
Selecting the slope (edge)
Select the desired slope from the following.
•
A
B
: Measures the time from a rising edge of the CHA signal to the first subsequent
rising edge of the CHB signal.
•
A
B
: Measures the time from a rising edge of the CHA signal to the first subsequent
falling edge of the CHB signal.
•
A
B
: Measures the time from a falling edge of the CHA signal to the first subsequent
rising edge of the CHB signal.
•
A
B
: Measures the time from a falling edge of the CHA signal to the first subsequent
falling edge of the CHB signal.
Measuredt
p1
Measuredt
1
Measuredt
2
CH A
CH B
Example (Both channels A and B: rise)
Measuredt
p2
A
B
1 [ de g ] =
t
p 1
t
1
×
3 6 0
2 [ de g ] =
t
p 2
t
2
×
3 6 0
Phase difference
Phase difference
Note
• Phase difference measurement is not available if hardware histogram mode has been selected.
• The time from a rising or falling edge of the CHA signal to the first subsequent edge of the CHB signal
must be 71 ns or more, otherwise incorrect measurement will result.
• The time from a rising or falling edge of the CHB signal to the first subsequent edge of the CHA signal
must be 30 ns or more, otherwise incorrect measurement will result.
• t
p
(phase difference) must be equal or smaller than t (period of the CHA signal), otherwise incorrect
measurement will result.
5.5 Setting Phase Difference Measurement
