Tektronix TDS1000B Series Operator's Manual page 42

1
Introduction to Oscilloscopes and Probes
To minimize this loading effect, you can try the following
remedies:
•
Use a higher impedance probe.
•
Measure the signal at a test point where the impedance
is lower. For example, cathodes, emitters, and sources,
have lower impedances than plates, collectors, and
drains.
To reduce the loading effect of a probe on a signal test
point, the signal amplitude transmitted to the oscilloscope
input must be reduced, or attenuated. The attenuated signal
must be manually compensated when using a high
impedance passive attenuation probe.
1-28 TDS1000B and TDS2000B Series Oscilloscopes – Operator Training Kit