HP 54540 Series - Page 175

Math/FFT Menu
Defining a Function
7 Press the Display key. Select the avg (average) mode. Then, set the
# of avgto8.
8 Press the Vertical 1 key. Then, turn off channel | and channel 2.
9 Press the Math/FFT key. Then, select function f1, display on, channel
1 subtract channel 2.
The function subtracts channel 2 from channel 1. The propagation delay
between channels results in a 6- to 7-ns spike.
Figure 10-3 4p running MATH/EFT
t2: “fF . Ta
o 6 6
lay
att
chan 9) 2 3 4
mem ot 2 3 4
+@x vs magnify
inv int diff FFT
chan | @ 3
4
jmem 1 2 93° 4
r sensitivity —
727.000 ns -2,000 ns
#AVG 5.00 ns/div
pr position ——~
25,0000. mV
10-8