Functional Overview
THS710A, THS720A, THS730A & THS720P User Manual
2–13
Many handheld oscilloscope/DMM products have the architecture
shown below, which shares a common reference for the oscilloscope
channels and DMM. With this architecture, all input signals must
have the same voltage reference when you take any multi-channel
measurements.
Electrically insulated case
Oscilloscope channels and
DMM must float together.
DC and/or
AC voltage
Other product architecture
Most bench-top oscilloscopes share the above architecture but
without the insulated case. Without differential preamplifiers or
external signal isolators, bench-top oscillscopes are not suitable for
taking floating measurements.
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