8-8
IM WT310E-01EN
Rated Integration Time
In the D/A output of integrated values, this instrument assumes the integrated value that would be
obtained if a rated value (same value as the measurement range) is continuously received over the
specified duration to be 100% and assigns this value to 5 V.
The default setting is 1.00.00 (1 h, 00 min, 00 s).
• Range: 0.00.00 (00 h, 00 min, 00 s) to 10000.00.00 (10000 h, 00 min, 00 s)
If you set the rated integration time to 0.00.00, the D/A output value will be 0 V.
For the relationship between measured integrated D/A output and voltage, see “Relationship between
Output Items and D/A Output Voltage.”
Note
• When the MAX hold feature (see section 4.6) is enabled, the maximum held values (MAX values) for the
following items are displayed. The maximum held values (MAX values) are also output in D/A output.
Voltage, current, active power, apparent power, peak voltage, peak current
• D/A output is performed for each output item with 100% (5 V) representing the application of the rated
range value for voltage, current, and power.
• If a scaling coefficient such as a VT ratio, CT ratio, or power coefficient is applied to a voltage, current,
or power value and scaling is enabled, this instrument produces 100% D/A output (5 V) when the scaled
measured value is the same as the scaled rated value (measurement range × scaling factor).
• Even if the elements have different scaling constants, when you set the element to Σ, this instrument
produces 100% D/A output (5 V) when scaled rated values are applied to the elements.
• The D/A output for all math functions except for those indicated below is 0 V.
Efficiency, average active power during integration
D/A Output Range Mode (Range Mode)
You can select the D/A output range mode from the following options. The default setting is Fixed.
You can set this feature by sending communication commands through the communication
interface. You cannot set this feature from the display menu of this instrument. For details, see the
Communication Interface User’s Manual, IM WT310E-17EN.
Fixed (Fixed range mode)
When a measurement function’s rated value is received, +5 V is output. For details, see “Relationship
between Output Items and the D/A Output Voltage” on page 8-10.
Manual (Manual range mode)
You can set which measurement function values result in a D/A output of -5 V, and which result
in a D/A output of +5 V. By doing so, you can enlarge or reduce (zoom) the D/A output of each
channel. For example, if you are measuring a current that fluctuates between 0.6 A and 0.8 A with
a measurement range of 1 A, when the D/A output range mode is Fixed, the D/A output voltage will
fluctuate between 3.0 V and 4.0 V. When you want to observe the fluctuations more closely, you can
use the D/A zoom feature. If you set the D/A output range mode to Manual and set the minimum
value to 0.6 and the maximum value to 0.8, this instrument will produce –5 V when the measured
current value is 0.6 A and +5 V when the measured current value is 0.8 A.
8.4 Configuring D/A Output Items (Option)
