Agilent Technologies 34401A User Manual

Page 75

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Limit Testing

The limit test operation enables you to perform pass/fail testing to
upper and lower limits that you specify.

Applies to all measurement functions, except continuity and diode tests.

You can set the upper and lower limits to any value between 0 and

±

120% of the highest range, for the present function. The upper limit

selected should always be a more positive number than the lower
limit. The default upper and lower limits are both “0”.

The upper and lower limits are stored in volatile memory; the
multimeter sets both limits to “0” when power has been off, after a
remote interface reset, or after a function change.

You can configure the multimeter to generate a service request (

SRQ

)

on the first occurrence of a failed reading. See “The SCPI Status
Model,” starting on page 134 for more information.

Front-Panel Operation: The multimeter displays “

OK

” for each

reading that is within the specified limits. It displays “

HI

” or “

LO

” for

each reading that exceeds the upper or lower limit. The multimeter
beeps once (if the front-panel beeper is enabled) on the first
occurrence of a failed reading after a good reading. See also “Beeper
Control,” on page 88.

5: LIMIT TEST (MATH MENU)

enable or disable limit test

6: HIGH LIMIT (MATH MENU)

set the upper limit

7: LOW LIMIT (MATH MENU)

set the lower limit

You can also turn off limit test by selecting a different math operation
from the front panel (only one math operation can be enabled at a time).

3

Chapter 3 Features and Functions
Math Operations

69

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