User manual

IEEE-488 Reference
2001-900-01 Rev. K / August 2010 4-65
MEAN: This math format calculates the mean value for all the readings stored in the buffer. Mean (y) is
calculated as follows:
where: X
i
is a stored reading, and
n is the number of stored readings.
SDEV: This math format calculates the standard deviation for all the readings stored in the buffer. Stan-
dard deviation (y) is calculated as follows:
where: X
i
is a stored reading, and
n is the number of stored readings.
MAX: This math format is used to determine the largest reading that is stored in the buffer.
MIN: This math format is used to determine the lowest reading that is stored in the buffer.
PKPK: This math format is used to determine the peak to peak value for the readings stored in the buffer.
The peak to peak value is calculated as follows:
PKPK = MAX - MIN
where; MAX is that largest reading in the buffer
MIN is the lowest reading in the buffer
Programming example 10 OUTPUT 716; “:calc2:form max; form?”
20 ENTER 716; A$
30 PRINT A$
40 END
Line 10 Two commands in this program message; the first selects the MAX math format, and the sec-
ond queries the programmed format.
Line 20 Addresses the Model 2001 to talk.
Line 30 Displays the programmed math format for CALC 2 (MAX).
:STATe <b>
:CALCulate2:STATe <b> Control CALC 2
Parameters <b> = 0 or OFF Disable CALC 2 calculation
= 1 or ON Enable CALC 2 calculation
y
X
i
i1=
n

n
---------------=
X
i
2
-
1
n
---
X
i
i=1
n









2





i=1
n

n-1
---------------------------------------------------
y=