Keithley 3721-ST User Manual

Section 4: Basic DMM operation Series 3700A System Switch/Multimeter Reference Manual
4-10 3700AS-901-01 Rev. D/June 2018
Settings available for voltage measurements
The following DMM attributes are available for voltage 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)
• dB reference (0.1 µV to 1000 V)
• detector bandwidth (3, 30, or 300)
• 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%)
• input divider (dmm.ON or dmm.OFF)
• 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)
• 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 303)
• relative offset enable (dmm.ON or dmm.OFF)
• relative offset level
• units (dmm.UNITS_VOLTS or dmm.UNITS_DECIBELS)

Keithley 3721-ST Specifications

General

Type	Multimeter
Model	3721-ST
Manufacturer	Keithley
Measurement Functions	DC Voltage, AC Voltage, DC Current, AC Current, Resistance, Frequency, Temperature
Relay Type	Electromechanical
Temperature Range	-200°C to 1820°C
Accuracy	Varies by function and range
Resolution	Varies by function and range
Display	LCD
Interface	GPIB, RS-232
Topology	Multiplexer
Maximum Switching Voltage	300 V
Maximum Switching Current	1 A
Input Impedance	>10 GΩ (DC Voltage ranges)