To Next Page

To Previous Page

4-21

IM 760301-01E

App

Index

Measurement Conditions

• Measurement Period

• When the data update rate is 50 ms, 100 ms, 5 s, 10 s, or 20 s

You must set the measurement period. The measurement period is set between

the first point where the synchronization source crosses the level zero point (center

of the amplitude) on the rising slope (or falling slope) within the data update period

and the last point where the synchronization source crosses the level zero point

(center of the amplitude) on the rising slope (or falling slope) within the update

period. If there is one or no zero crossing in the data update interval, the

measurement period is set equal to the data update interval. For details, see

appendix 6.

Data update interval

Measurement period

Synchronization

source

Rising edge zero crossing

Falling edge zero crossing

Data update interval

Measurement period

• When the data update rate is 250 ms, 500 ms, 1 s, or 2 s

You do not have to set the measurement period. The measurement period is equal

to the data update interval.

Note

• The measurement period for the numeric data of the maximum value (Peak) for voltage and

current is the entire span within the data update period regardless of the settings above.

Therefore, the measurement period for the measurement functions U+pk, U-pk, I+pk, I-pk,

CfU, CfI, FfU, and FfI that are determined from the maximum value of the voltage and current

is also the entire span within the data update period.

• The measured value may fluctuate or may not be correct if the synchronization source is not

set correctly. Refer to appendix 6 when setting the synchronization source.

• For the list of measurement period (synchronization source) settings of all input elements, see

section 3.17, “Displaying the Setup Parameter List.” You can change the measurement period

(synchronization source) with the list displayed.

4.7 Setting the Measurement Period

YOKOGAWA wt3000 User Manual

Questions and Answers: