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Section 4: Basic DMM operation Series 3700A System Switch/Multimeter Reference Manual

4-14 3700AS-901-01 Rev. D/June 2018

Current measurements (DC current and AC current)

The Series 3700A can make DC current measurements from 1 pA to 3 A and AC current

measurements from 1 mA to 3 A

RMS

To prevent electric shock, never make or break connections while power is present in the test

circuit.

Also see crest factor information contained in AC voltage measurements and crest factor (on page 8-

5).

Settings available for current measurements

The following DMM attributes are available for AC current and DC current measurements:

• aperture (range of 10 µs to 0.250 s for 50 Hz; 8.33 µs to 0.250 s for 60 Hz)

• autodelay (dmm.AUTODELAY_ONCE, dmm.ON or dmm.OFF)

• autorange (dmm.ON or dmm.OFF)

• autozero (dmm.AUTOZERO_ONCE, dmm.ON or dmm.OFF)

• display digits (3, 4, 5, 6, or 7)

• filter count (1 to 100)

• filter enable (dmm.ON or dmm.OFF)

• filter type (dmm.FILTER_MOVING_AVG or dmm.FILTER_REPEAT_AVG)

• filter window (0 to 10%)

• DMM limit auto clear (dmm.ON or dmm.OFF)

• DMM limit enable (dmm.ON or dmm.OFF)

• DMM limit high fail (0 or 1)

• DMM limit high value (–4294967295 to +4294967295)

• DMM limit low fail (0 or 1)

• DMM limit low value (–4294967295 to +4294967295)

• line synchronization (dmm.ON or dmm.OFF) (dc only)

• math enable (dmm.ON or dmm.OFF)

• math format (dmm.MATH_NONE, dmm.MATH_MXB, dmm.MATH_PERCENT, or

dmm.MATH_RECIPROCAL)

• math mxb b factor (–4294967295 to +4294967295)

• math mxb m factor (–4294967295 to +4294967295)

• math mxb units

• math percent (–4294967295 to +4294967295)

• nplc (0.0005 to 15 for 60 Hz; 0.0005 to 12 for 50 Hz)

• range (0 to 3.1)

• relative offset enable (dmm.ON or dmm.OFF)

• relative offset level

Keithley 3700 Series User Manual

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