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5700A/5720A Series II

Operators Manual

4-32

Four-wire connection is available for all resistance values except 100 MΩ.To activate

four-wire resistance, press X so that the indicator lights. (Figure 4-4A shows the four-

wire connection.)

For calibrating a meter with a two-wire resistance mode such as a typical handheld

DMM, refer to Figures 4-4B through 4-4D. For resistances of 19 kΩ or lower in two-wire

mode, compensation circuitry inside the calibrator is available to remove errors

introduced by resistance in the path between the front panel terminals and the precision

resistor. The softkey label “2 wire Comp” appears on the Control Display when you

select resistances of 19 kΩ or lower. This softkey allows you to disable and enable the

compensation circuitry.

Depending on how you connect the meter, you can use two-wire compensation

referenced at the UUT terminals (Figure 4-4C) or at the calibrator’s terminals (Figure 4-

4D). See “Resistance Output” for information on turning on and off two-wire

compensation circuitry.

Figure 4-4B shows a meter connected in a two-wire connection with the two-wire

compensation circuitry turned off. Use this configuration only if lead resistances are

insignificant. For a two-wire connection, press X so that the indicator is off.

For resistances where uncompensated lead resistances are significant, use the two-wire

compensation circuit and the connection in Figure 4-4C or 4-4D. Use the connection in

Figure 4-4C if you want to calibrate the meter referenced at its terminals. Use the

connection in Figure 4-4D if you want to calibrate the meter referenced at the ends of its

test leads.

4-30. Wideband AC Voltage Output (Option 5700A-03)

To set an output from the Wideband AC Module (Option 5700A-03), proceed from r

or the power-up state as follows:

1. Make sure the calibrator is in standby (STANDBY annunciator lit). Press O if

necessary.

2. If the UUT is not connected, connect it now as described previously in this chapter

under “Connecting the Calibrator to a UUT.”

3. Set the UUT to read ac voltage on the appropriate range.

4. Press w.

5. Press the numeric keys for the desired output, expressed as voltage or a dBm level.

Fluke 5700A Series II User Manual

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