HP 54540 Series - Page 174

Subtracting
Waveforms Exercise
Figure 10-2
Math/FFT Menu
Defining a Function
In this exercise you subtract two waveforms in the Math menu.
1 Press the Recall key. Then, press the Clr key.
2 Connect a power splitter or BNC Tee to channel 1. Connect a coaxial
cable between the rear-panel AC cal connector and one side of the
BNC Tee. Then, connect a one-meter coaxial cable between the
other side of the BNC Tee and channel 2.
A power splitter provides better signal fidelity than a BNC Tee. The
extra cable length between channels provides a time delay between
the signals on the oscilloscope. The propagation of a 1-meter coaxial
cable is about 6 to 7 ns. This delay is used to demonstrate the math
function.
3 Press the Vertical 1 key. Then, set the channel 1 and channel 2 input
coupling to 50 QO de.
4 Press the Autoscale key.
5 Use the time/div knob to change the time base to 5 ns/div. Then, use
the delay knob to position the waveforms on the screen.
6 Press the Horizontal Setup key. Then, select the repetitive mode.
fe running
- delay ————-,
2,000 1S
| AAT
oY
¢ reference
Jiett @i@riant
realtime |
“27 .000_ns —2.000 ns 23.000 ns
*avq i 5.00 ns/div repetitive