Agilent Digital Multimeters / Voltmeters Product Comparison

	34401A	3458A	34970A1	34420A
Type	DMM 6 ½ Digit	DMM 8 ½ Digit	Data Logger / Scanning DMM 6 ½ Digit	Nanovolt /micro-ohm meter 7 ½ Digit
Basic Measurements	dc & ac voltage, dc & ac current, 2 & 4 wire resistance, frequency & period			dc voltage, 2 & 4 wire resistance, low power resistance, ratio
Additional Measurements	continuity, diode test	3 modes of true RMS, Digitizing	Scanning 20 to 60 2-wire channels	2 channels - ratio and difference
Temperature	N/A	Thermistor, RTD	Thermocouple, RTD, Thermistor	Direct SPRT, RTD, Thermistor, Thermocouple
dcV Accuracy2 ±(% of reading + % of range)	0.0035 + 0.0005	0.0008 + 0.000005 (.0004 + .000005)3	0.0035 + 0.0005	0.003 + 0.0004
acV Accuracy4 ±(% of reading + % of range)	0.06 + 0.03	0.007 + 0.002	0.06 + 0.04	N/A
Resistance Accuracy5 ±(% of reading + % of range)	0.010 + 0.001	0.0010 + 0.00005	0.010 + 0.001	0.006 + 0.0002
Math Functions	Null, statistics, dBm, dB, limit test	Null, statistics, dBm, dB, limit test, scale, offset, filter, % error	Null, statistics, limit test, scale, offset	Null, statistics, dBm, dB, limit, test, scale, offset, filter, moving avg. filter
Software	Includes Intuilink SW		Includes BenchLink Data Logger SW	Includes Intuilink

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