Measurement Characteristics
dc Voltage ¡@
Measurement Method Continuously Integrating Multi-slope III A-D Converter
A-D Linearity 0.0002% of reading + 0.0001 % of range
Input Resistance ¡@

0.1V, 1V,10 V ranges

Selectable 10 M£[ or >10,000 M£[

100 V, 1000 V ranges

10 M£[ ¡Ó 1%
Input Bias Current < 30pA at 25¢X C
Input Protection 1000 V all ranges
dcV:dcV Ratio Accuracy Vinput Accuracy + Vreference Accuracy
¡@ ¡@
True rms ac Voltage

Measurement Method

¡@

ac coupled True rms ¡V measures the ac component of the input with up to 400

Vdc of bias on any range.

Crest Factor Maximum of 5:1 at Full Scale

Additional Crest Factor

¡@

¡@

Errors (non-sinewave) Crest Factor 1¡V2 0.05 % of reading Crest Factor 2¡V3
0.15 % of reading Crest Factor 3¡V4 0.30 % of reading Crest Factor 4¡V5 0.40 % of
reading

Input Impedance 1 M£[ ¡Ó 2% in parallel with 100 pF
Input Protection 750Vrms all ranges
¡@ ¡@
Resistance
Measurement Method Selectable 4-wire or 2-wire Ohms. Current source referenced to LO input.
Maximum Lead Resistance

(4-wire)

10% of range per lead for 100½ and 1k£[ ranges. 1k½ per lead on all other ranges.
Input Protection 1000 V all ranges
¡@ ¡@
dc Current
Shunt Resistance 5 £[ for 10 mA,100 mA; 0.1 £[ for 1 A, 3 A
Input Protection Externally accessible 3 A 250 V Fuse Internal 7 A 250 V Fuse
¡@ ¡@
True rms ac Current

Measurement Method

¡@

Direct coupled to the fuse and shunt. ac coupled True rms measurement

(measures the ac component only).

Shunt Resistance 0.1 £[ for 1 A and 3 A ranges
Input Protection ExternalIy accessible 3 A 250 V Fuse Internal 7 A 250 V Fuse
¡@ ¡@
Frequency and Period
Measurement Method Reciprocal counting technique
Voltage Ranges Same as ac Voltage Function
Gate Time 1 s, 100 ms, or 10 ms.
¡@ ¡@
Continuity / Diode
Response Time 300 samples/s with audible tone
Continuity Threshold Selectable from 1 £[ to 1000 £[
¡@ ¡@
Measurement Noise Rejection 60 (50) Hz[1]
dc CMRR 140 dB
ac CMRR 70 dB
¡@ ¡@
Integration Time Normal Mode Rejection[2]
100 plc / 1.67 s (2 s) 60 dB[3]
10 plc / 167 ms (200 ms) 60 dB[3]
1 plc / 16.7 ms (20 ms) 60 dB
<1 plc / 3 ms or 800 µs 0 dB
¡@ ¡@
Operating Characteristics[4]
Function
Digits Readings/s
dcV, dcI, and
6 ½ 0.6 (0.5)
Resistance
6 ½ 6 (5)
¡@
5 ½ 60 (50)
¡@
5 ½ 300
¡@
4 ½ 1000
acV, acI
6 ½ 0.15 Slow (3Hz)
¡@
6 ½ 1Medium (20Hz)
¡@
6 ½ 10 Fast (200Hz)
¡@
6 ½ 50[5]
Frequency or Period
6 ½ 1
¡@
5 ½ 9.8
¡@
4 ½ 80
¡@ ¡@
System Speeds[6]
Configuration Rates  26/s to 50/s
Autorange Rate (dc Volts)  >30/s
ASCII readings to RS-232 55/s
ASCII readings to GPIB 1000/s 1000/s
Max. Ext. Trig. Rate to Memory 1000/s
¡@ ¡@
Triggering and Memory
Reading HOLD Sensitivity 10%, 1%, 0.1%,or 0.01% of range
Samples/ trigger 1 to 50,000
Trigger Delay 0 to 3600 s: 10 µs step size
External Trigger Delay < 1 ms
External Trigger Jitter < 500 µs
Memory 512 readings
¡@ ¡@
Math Functions
NULL, Min/Max/Average, dBm, dB, Limit Test (with TTL output)
¡@ ¡@
Standard Programming Languages
SCPI (IEEE-488.2), Agilent 3478A, Fluke 8840A/42A
¡@ ¡@
Accessories Included

Test Lead Kit with probe, alligator, and grabber attachments. Operating Manual, Service Manual, test report,
and power cord.

¡@ ¡@
General Specifications
Power Supply 100 V/120 V/220 V/ 240 V ¡Ó10%
Power Line Frequency 45 Hz to 66 Hz and 360 Hz to 440 Hz Automatically sensed at power-on
Power Consumption 25 VA peak (10W average)
Operating Environment Full accuracy for 0¢X C to 55¢X C Full accuracy to 80% R.H. at 40¢X C
Storage Environment ¡V 40¢X C to 70¢X C
Weight 3.6 kg (8.0 Ibs)
Safety Designed to CSA, UL-1244, IEC-348
RFI and ESD MIL-461C, FTZ 1046, FCC
Vibration and Shock MIL-T-28800E, Type III, Class 5 (Sine Only)
Warranty 3 years

1 For 1k½ unbalance in LO lead.
2 For power line frequency ¡Ó 0.1%.
3 For power line frequency ¡Ó 1% use 40dB or ¡Ó 3% use 30dB.
4 Reading speeds for 60Hz and (50Hz) operation.
5 Maximum useful limit with default settling delays defeated.
6 Speeds are for 41⁄ 2 digits, Delay 0, Auto-zero and Display OFF.


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