Keithley 2001 Operator's Manual page 223

Programming example
Parameters
2001-900-01 Rev. K / August 2010
MEAN: This math format calculates the mean value for all the readings stored in the buffer. Mean (y) is
calculated as follows:
where: X is a stored reading, and
i
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:
y =
where: X is a stored reading, and
i
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
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>
<b> = 0 or OFF
= 1 or ON
n

X
i
=
=
i 1
y ---------------
n

2
  
n n

  
1
 
2

-- -
X - X
  
i i

n
  

i=1 i=1
-------------------------------------------------- -
n-1
Control CALC 2
Disable CALC 2 calculation
Enable CALC 2 calculation
IEEE-488 Reference
4-65