Name: Keithley 2110
Brand: Keithley
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Model 2110

5½ Digit Multimeter Reference Manual Section 3:

Basic DMM operation

2110-901-01 Rev. C/August 2013 3-49

When you enable math operations and your integration rate is faster than 0.6 PLC, the maximum

reading rate is affected significantly. The maximum rates when math operations are enabled are as

follows:

• The 0.001 PLC rate is 6000 readings/s

• The 0.006 PLC rate is 4000 readings/s

• The 0.02 PLC rate is 2000 readings/s

• The 0.06 PLC rate is 800 readings/s

• The 0.2 PLC rate is 280 readings/s

Percent

This mathematical function calculates the ratio of a measured reading to a specified target value in

the form of a percentage. The equation to calculate percent is shown as follows:

The set target value is stored in volatile memory and is cleared after the instrument has been turned

off or a remote interface reset occurs.

Front-panel operation

Perform the following steps to use the percent math function:

1. Press the SHIFT and NULL (MATH) keys.

2. Use the ◄ and ► keys to display PERCENT and press ENTER.

3. Use the ◄ and ► keys to display TARGET and press ENTER.

Note that if you select the RUN menu option instead, the percent function will enable using the

current target value.

4. Use the ◄, ►, ▲, and ▼ keys to enter the target value. Note that the polarity sign can be toggled

between plus and minus.

5. Press the ENTER key. The MATH indicator turns on.

You can disable the math operation by pressing a different function key. You can also disable it from

the math menu as follows:

1. Press the SHIFT and NULL (MATH) keys.

2. Use the ◄ and ► keys to display OFF and press ENTER.

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