HP 54750A, User Manual, Page: 273 / 478

General Purpose Oscilloscope Menus
Dene Measure Menu
The mean is calculated as:
n
=
P
x
n
; (1 n 65; 534)
n
=
n 01
(
n 0 1
)
+ x
n
; n = 65; 535
Where:
= mean
n = count since last statistics reset
x = measurement result
Standard deviation is calculated as:
=
"
n
P
x
2
0
0
P
x
1
2
n
(
n 0 1
)
#
0
1
2
;
(
2 n 65; 534
)
2
n
=
2
n 01
(n 0 1) + x
2
n
; n = 65; 535
=
n[
2
n
0 (
n
)
2
]
n 0 1
0
1
2
; n = 65; 535
Where:
= standard deviation
n = count since last statistics reset
x = measurement result
aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
min, max
Min (minimum) and max (maximum) are the absolute extremes of the
automatic measurement.
K ey Path 4 Dene meas 5
N
NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN
Statistics min, max
10-21