Name: Keithley 2110
Brand: Keithley
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Section

3: Basic DMM operation Model 2110 5½ Digit Multimeter

Reference Manual

3-4 2110-901-01 Rev. C/August 2013

Ratio measurements

This feature calculates the ratio of an input DC voltage to a reference DC voltage using the following

equation:

This function only applies to DC voltage measurement.

Use the following procedure and commands to perform basic measurements. Refer to Enhancing

measurement performance (on page 3-37) for details about setting measurement speed and

resolution. It also provides information on using other features and settings to optimize measurement

performance.

Front-panel operation

Perform the following steps to perform ratio calculations:

1. Press DCV to select the DC voltage function.

2. Select a measurement range (auto or manual) for the input signal:

• Autorange is the power-on default. If manual ranging is selected (MAN indicator on), press SHIFT and

then ESC (AUTO) to select autorange.

• For manual ranging, press the RANGE ▲ and ▼ keys to select a measurement range.

3. As shown below, connect the input and reference signals to the instrument:

a. Connect the DC input signal to the INPUT HI and LO terminals.

b. Connect the reference signal to the SENSE HI and LO terminals.

c. Connect the SENSE LO terminal to the INPUT LO terminal.

4. Press CONFIG and use the ◄ and ► keys to display RATIO, and then press ENTER (RAT

indicator turns on).

5. Observe the ratio reading on the display.

To disable ratio, press any function key.

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