Tektronix TekScope THS 710, User Manual

Page: 54 / 197

Application Examples
THS 710 & THS 720 User Manual 2–29
Setup to Measure Instantaneous Power Dissipation
SCOPE CH 1 — — —
CH 2 Probe Type Current
Probe Set to
100 mV/A
AUTO
RANGE — — —
MATH Function Ch1
×
Ch2
CURSOR Function Paired Set cursor
Move the cursor along the power (MATH) waveform and read the
instantaneous power in the cursor readout (for example, @5.63 W).
Going Further
Measure the average power dissipation in the transistor (mean value
of the power waveform) with the following setup:
SCOPE MEAS Select
Measrmnt for
MATH Mean —
OK Select
Measrmnt —
You can also display the I-V characteristic of the transistor for
comparison to its safe operating area using the XY display format.
Refer to page 3–14 for information on XY display format.