Power-Measurement Application Examples
THS710A, THS720A, THS730A & THS720P User Manual
2–37
Setup to Test the Transistor Drive Circuit
S
PE
CH 1
CH 2
AUTO
RANGE
You do not have to do anything special to take this difficult
measurement. Because of the isolated channels, you can reference
the channel 1 probe to chassis ground and the channel 2 probe
directly to the –300 VDC bus. Channel 1 displays the gate-drive
signal directly from the driver and channel 2 displays the signal as it
is received by the power FET.
Going Further
The isolated channels allow you to reference a channel to AC as well
as DC voltages.
H You can connect the P5102 probe reference lead to 50 Hz, 60 Hz,
or 400 Hz AC power lines (up to the maximum voltage rating).
H You can connect the P6117 or P5102 probe reference lead to
many other dynamic signals (up to the maximum voltage rating).
Because you can connect to references other than ground, you can
take many measurements that would otherwise require an oscillo-
scope with a differential input.
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