YOKOGAWA WT500 User Manual page 29

2.2 Measurement Functions and Periods
Types of Measurement Functions Used in Harmonic Measurement (Optional)
2-6
The data of harmonic measurement functions (numeric data) is measured or computed
from the sampled data that is described later in "Measurement Period."
* For information about sampled data, see the explanation under "Types of Measurement
Functions Used in Normal Measurement," earlier in this section.
Types of Harmonic Measurement Functions
• Input Element Harmonic Measurement Functions
The following 15 harmonic measurement functions are available. For details about the
determination of measurement function data, see appendix 1.
Characters or Numbers
in Parentheses
Measurement
Function
Total
U( )
Yes
I( )
Yes
P( )
Yes
S( )
Yes
Q( )
Yes
λ( )
Yes
φ( )
Yes
φU( )
Yes
φI( )
Yes
Uhdf( )
Yes
Ihdf( )
Yes
Phdf( )
Yes
Uthd
No
Ithd
No
Pthd
No
• Functions with parentheses will produce different values depending on which of the
following is contained in their parentheses.
• total: The total value is displayed.
• dc: The dc component numeric data is displayed.
• 1: The numeric data of the fundamental signal is displayed.
• k: The numeric data from harmonic orders 2 to N is displayed. N is the upper
limit of harmonic order analysis (see section 17.6 for details). The upper
limit of harmonic analysis is either set to an automatically determined value
or to the value that you set, whichever is smaller. It can go up to the 50th
harmonic order.
• All: Functions without parentheses display numeric data.
• Functions Uhdf to Pthd are measurement functions that express values that
are unique to harmonics. For details about how the values are determined, see
appendix 1.
1 k
dc
Yes Yes Yes
Yes Yes Yes
Yes Yes Yes
Yes Yes Yes
Yes Yes
Always 0
Yes Yes Yes
No Yes Yes
No No Yes
No No Yes
Yes Yes Yes
Yes Yes Yes
Yes Yes Yes
No No No
No No No
No No No
*
All
No
parentheses
No Yes: Numeric data available
No No: No numeric data available
No
No
No
No
No
No
No
No
No
No
Yes
Yes
Yes
IM 760201-01E