Keithley 2280 Series Reference Manual

Series 2280 Precision DC Power Supply Reference Manual Appendix B: Verification
077085503 / March 2019 B-39
Check voltage noise (20 MHz)
Equipment required
Oscilloscope
High current 18 AWG wire
Electronic load
Coaxial cable (BNC M-M)
BNC F-to-Banana cable
To check voltage noise (20 MHz):
1. Plug the device under test (DUT) into your local line power from the mains.
2. Plug the test oscilloscope into the same mains outlet as the DUT.
Some AC power sources create large amounts of high frequency noise on the power line that the
instrument may not fully reject. Noise directly on the mains is typically better controlled.
Use the same mains outlet for both the DUT and test oscilloscope to avoid ground loops which may
cause noise.
3. Power on the DUT and test oscilloscope.
4. Set up the equipment, as shown in the following figure.

Keithley 2280 Series Specifications

General

Brand	Keithley
Model	2280 Series
Category	Power Supply
Language	English