13
IM 701933-01E
Preparing for Measurement
CAUTION
When using a 701933 current probe, it may not be possible to use multiple
active probes at the same time with the 701934, 700938 power supply,
or the probe power supply from a YOKOGAWA waveform measuring
instrument. Make sure that the total current consumption of each active
probe does not exceed the current specifications of the probe power
supply. The current consumption of the probe depends on the measured
current (refer to the figure below).
See the following YOKOGAWA website for the usage limitations for each
measuring instrument.
https://tmi.yokogawa.com/solutions/products/oscilloscopes/current-probes/
Measured current (A)
Measured Current Values and Current Consumption
of the 701933 Current Probe (Typical)
Current consumption (mA)
-50 -40 -30 -20 -10
0
10
20
30
40
50
600
500
400
300
200
100
0
-100
-200
-300
-400
-500
-600
Positive power, DC input
Negative power, DC input
Positive power, AC (50 Hz) input
Negative power, AC (50 Hz) input
1.
Prepare the probe, a power supply 701934/700938, and a waveform
measuring instrument such as a digital oscilloscope or recorder.
2.
Turn the power switch OFF, then connect the power cord.
3.
Connect the power plug of the 701933 you are using to a power
receptacle on the 701934/700938.
4.
Turn ON the power switch to the 701934/700938, and confirm that the
power indicator on the front panel illuminates.
Note
The output from this probe is terminated internally. Use the probe with a waveform
measuring instrument of high input impedance. Accurate measurement cannot be
obtained at an input impedance of 50 Ω.