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Ratio and delta calculations

With RATIO or DELTA selected from the SCAN OPERATION menu, the Model 2002 can

measure two speciﬁed internal scanner channels (reference channel and measure channel) and

then compute the ratio or difference (delta) between them. Valid measurement functions for ratio

and delta include DCV,

Ω

2 and

Ω

Ratio and delta are calculated as follows:

Perform the following steps to perform ratio or delta calculations:

1. Select and conﬁgure ratio or delta as follows. Note that a menu item is selected by plac-

ing the cursor (using and keys) on it and pressing ENTER. See MENUS if you

need more information to navigate through the menu structure.

• Press CONFIG

• Press SCAN

• Select RATIO or DELTA

• Select MEASURE

• Select CH1, 2, 3, 4, 5, 6, 7, 8, 9 or 10

• Select REFERENCE

• Select CH1, 2, 3, 4, 5, 6, 7, 8, 9 or 10

• Select FUNCTION

• Select DCV,

Ω

2 or

Ω

Use the EXIT key to back out of the menu structure.

2. Press SCAN to halt triggers (instrument goes into idle).

3. To start ratio or delta measurements, press SCAN or TRIG. The displayed readings are

the result of the ratio or delta calculation.

4. To stop ratio or delta measurements, press EXIT.

Ratio

Measure

Reference

------------------------=

Delta Measure Reference–=

Measurement Options 2-25

Keithley 2002 Getting Started Manual

Other manuals for Keithley 2002