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5-8

IM WT310E-02EN

Rated Integration Time

In the D/A output of integrated values, 5.0 V FS represents the integrated value when the rated range

valueisappliedfortheratedintegrationtime.ThesameistrueifscalingisenabledorthevalueforΣ

is being measured. The default setting is 1.00.00 (1 h, 0 min, 0 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.

Note

• When the MAX hold feature (see section 4.6 in the User’s Manual, IM WT310E-01EN) 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 5.0 V FS representing the application of the rated range

value for voltage, current, and power.

• Even when scaling constants are set for voltage, current, and power, the D/A output of 5.0 V FS

represents the application of the rated range value.

• Eveniftheelementshavedifferentscalingconstants,whenyousettheelementtoΣ,5.0VFSofD/A

output represents the application of the rated range value to each element.

• 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 5-10.

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, 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.

5.3 Producing D/A Output

YOKOGAWA WT332E User Manual

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