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Making Measurements
Making Measurements
1 On the N2779A power supply, turn the power switch off and connect the power
2 Connect the probe's power plug to the N2779A's power receptacle.
3 Turn the N2779A power switch on, and check that the front-panel power
Demagnetization and Zero Adjustment
4 With the oscilloscope input at ground, adjust the trace to the zero position.
5 Set the oscilloscope's input coupling to DC.
6 Connect the probe's output connector to the oscilloscope's input connector as
10
WARNING
Before using the probe, check that the system is safe and that the
preparations described in
carried out.
CAUTION
Before turning on the power, make sure that the voltage of the power
supply being used matches the supply voltage indicated on the
N2779A's rear panel.
cord.
indicator lights.
The output of the current probe is terminated internally. Use a high
NOTE
impedance input to the measuring instrument. Accurate measurements
are not possible when the input impedance of the oscilloscope is set to
50
. Be sure to set the input impedance to 1 M
Ω
measurements. If the oscilloscope input impedance cannot be set to
1 M
then the Keysight E2697A impedance adapter can be purchased.
Ω
shown in
Figure 3
on page 11. Turn the collar until it clicks, and check that it is
locked securely.
"Safe Probing"
on page 13 have been
Ω
N2780/1/2/3B User's Guide
before making
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