MR8740T_user_manual_eng_20191016H.pdf - 第60页

55 Conguring Measuring-Module-Specic Settings 4 Click the [Range (f.s.)] box, and then choose a measurement range from the list. IMPORT ANT The gure of each measurement range name represents the maximum current Model …

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54
Conguring Measuring-Module-Specic Settings
Conguring Model 8971 Current Unit settings
> [Channel] > [8971]
4
1, 2
3
1
Conrm the output rate displayed in the [Mode] area.
The instrument automatically recognizes a current sensor connected to Model 8971 Current Unit and displays
it as follows:
20A/2V When one of the following current sensors is connected: Model 9272-10 (20 A range)
and Model CT6841.
200A/2V When one of the following current sensors is connected: Model 9272-10 (200 A range),
Model CT6843, and CT6863.
50A/2V When Model CT6862 AC/DC Current Sensor is connected
500A/2V When one of the following current sensors is connected: Models 9709, CT6844,
CT6845, CT6846*, and CT6865*.
None When no current sensor is connected.
IMPORTANT
*: When Model CT6846 or Model CT6865 connects to Model 8971 Current Unit via Model 9318
Conversion Cable, the instrument recognizes the sensor as a 500 A AC/DC sensor. Set the
conversion ratio at 2.00 in the scaling setting to obtain correct current values.
2
In the [Mode] area, click the [DC] or [RMS] to choose a measurement mode.
DC
For current measurement
RMS For RMS measurement
3
(When you have changed the measurement mode) Click [Zero adjust].
The instrument performs zero-adjustment. Execute zero-adjustment without any input.
55
Conguring Measuring-Module-Specic Settings
4
Click the [Range (f.s.)] box, and then choose a measurement range from the list.
IMPORTANT
The gure of each measurement range name represents the maximum current Model 8971 can
measure using the range. However, the instrument cannot measure currents that exceed the rated
current of a connected current sensor. Check the specications of the current sensor used.
3
Advanced Functions
56
Conguring Measuring-Module-Specic Settings
Conguring Model 8972 DC/RMS Unit settings
> [Channel] > [8972]
3
1
2
1
In the [Mode] area, click the [DC] or [RMS] to choose a measurement mode.
DC
For voltage measurement
RMS For RMS measurement
2
(When you have changed the measurement mode) Click [Zero adjust].
The instrument performs zero-adjustment. Execute zero-adjustment without any input.
3
Click the area that includes [Response].
The setting dialog box appears.
4
Click the [Response] box, and then from the list, choose a response time for RMS
measurement.
Fast
Sets the response time to about 100 ms.
Normal Sets the response time to about 800 ms.
Slow Sets the response time to about 5 seconds.
Usually, use [Fast]. Setting the response time to [Normal] or [Slow] can stabilize the measured values if the
frequency is relatively low or the voltage uctuates severely.
5
Click [Close].
The setting dialog box closes.