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IM WT1801-01EN
D/A Output (
D/A Output Items; option)
You can generate numeric data as ±5 V FS DC voltage signals from the rear panel D/A output connector. You
can set up to 20 items (channels).
Output Items (Item)
The measurement functions that you select under Function and Element/Σ appear here.
Function (Function)
• You can select any of the measurement functions listed under “Items That This Instrument Can Measure.”
• To output integrated values through D/A conversion, set the rated time of integrated D/A output.
• You can also choose not to output a measurement function (None). The output for channels that have been
set to none is 0 V, because they have no corresponding numeric data.
• When the
is set to Fixed, the D/A output of channels whose measurement function
has been set to Z, Rs, Xs, Rp, Xp, or F1 to F20 is Fixed at 0 V. When the range mode is set to Manual, the
channels produce voltages.
Element (Element/Σ)
• You can select the element/wiring unit from the choices below. The available options vary depending on the
installed elements.
Element1, Element2, Element3, Element4, Element5, Element6, ΣA, ΣB, and ΣC
• If an element in the selected wiring unit does not exist, because there is no data, the output is 0 V. For
example, if elements are assigned to ΣA but not to ΣB, the output for the measurement function for ΣB is 0 V.
Order (Order; option)
When you select a function that has harmonic data, you can set the displayed harmonic order within the
following range.
Total (Total value) or 0 (DC) to 500
The orders that can be specified vary depending on the measurement function. For details, see “Harmonic
Measurement Function Orders.”
The outputs of orders that exceed the maximum measurable order are 0 V. For information about the maximum
measurable harmonic order, see “Maximum Harmonic Order to Be Measured (Max Order).”
D/A Output Range Mode (Range Mode)
You can select the D/A output range mode from the following options.
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.”
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, the WT1800 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.
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