1-5
IM 701931-01E
1
2
Preparations for Measurement
CAUTION
When using the Current Probe (Model 701931), you can only connect as
many active probes simultaneously to the Power Supply (Model 701934)
or the YOKOGAWA instruments probe power supply connector as allowed
depending on the current value of the conductor.
The current consumption of the Current Probe (Model 701931) is
dependent upon the measured current value. Do not let each active
probe’s total current consumption exceed the current regulated by the
Power Supply (Model 701934) or the YOKOGAWA instruments probe
power supply connector (see figure below).
0
–100
–100
0
100
100
200
200
300
300
400
400
500 600 700
500
600
–200
–200
–300
–300
–400
–400
–500
–600
–500
–600
–700
Positive AC (50 Hz) power
Negative AC (50 Hz) power
Positive DC power
Negative DC power
Current to be measured (A)
Current consumption vs. current to be measured (typical)
Current Consumption (mA)
For the probe power rating of each model, please refer to “Relationship
between the current being measured and probe’s current cunsumption” link
of the following website.
http://tmi.yokogawa.com/products/oscilloscopes/current-probes
1.
Have the Power Supply (Model 701934), and oscilloscope or recorder for
waveform measurement ready.
2.
Turn the power switch OFF and connect the power cord.
3.
Connect the power plug of the 701931 to the power receptacle of the
701934.
4.
Turn the 701934 power switch ON, and check that the front panel power
indicator lights.
Note
The output of this unit is terminated internally. Use a high-impedance input to the
measuring instrument. With an input impedance of 50 Ω, accurate measurement
is not possible. When power is supplied to the 701931, a demagnetizing waveform
might be generated
701931 Current Probe
