Low-Frequency Compensation - Keysight N2894A User Manual

Low-Frequency Compensation

The N2871A, N2872A, N2873A, N2875A, and N2894A can be adjusted for low fre-
quency (LF) compensation. The N2870A, N2874A, and N2876A cannot be adjusted.
The probe should be adjusted for LF com-
pensation when it is connected to an oscil-
loscope input for the first time. LF
compensation matches the probe cable
capacitance to the oscilloscope input
capacitance. This matching assures good
amplitude accuracy from DC to the upper
bandwidth limit frequencies. A poorly com-
pensated probe clearly influences the over-
all system performance (probe and
oscilloscope) and introduces measurement errors resulting in inaccurate readings
and distorted waveforms. To perform the LF compensation:
To perform the LF compensation:
1 Connect the probe to the oscilloscope's front-panel calibration output (a square
wave label is usually seen near this output).
2 Use the supplied trimmer tool to adjust the LF compensation to an optimum
square wave response as shown in this picture.
Figure 1
Keysight N2870A-Series and N2894A Passive Probes User's Guide
LF Compensation
Low-Frequency Compensation
9