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 MΩ or
>10,000 MΩ
100 V, 1000 V ranges 10 MΩ ± 1%
Input Bias Current < 30pA at 25° C
Input Protection 1000 V all ranges
dcV:dcV Ratio Accuracy
V
input
Accuracy +
V
reference
Accuracy
True rms ac Voltage
Measurement Method ac coupled True rms –
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 1–2
0.05 % of reading
Crest Factor 2–3
0.15 % of reading
Crest Factor 3–4
0.30 % of reading
Crest Factor 4–5
0.40 % of reading
Input Impedance 1 MΩ ± 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 100Ω and 1kΩ
ranges. 1kΩ per lead
on all other ranges.
Input Protection 1000 V all ranges
dc Current
Shunt Resistance 5Ω for 10 mA,100 mA;
0.1 Ω 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 Ω 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 Ω to
1000 Ω
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
1
⁄
2
0.6 (0.5)
Resistance 6
1
⁄
2
6 (5)
5
1
⁄
2
60 (50)
5
1
⁄
2
300
4
1
⁄
2
1000
acV, acI 6
1
⁄
2
0.15 Slow (3Hz)
6
1
⁄
2
1
Medium (20Hz)
6
1
⁄
2
10 Fast (200Hz)
6
1
⁄
2
50
[5]
Frequency or 6
1
⁄
2
1
Period 5
1
⁄
2
9.8
4
1
⁄
2
80
System Speeds
[6]
Configuration Rates 26/s to 50/s
Autorange Rate >30/s
(dc Volts)
ASCII readings to RS-232
55/s
ASCII readings to GPIB 1000/s
Maximum Internal Trig. Rate
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 ±10%
Power Line Frequency45 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° C to
55° C
Full accuracy to 80%
R.H. at 40° C
Storage Environment – 40° C to 70° 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
3
1 For 1kΩ unbalance in LO lead.
2 For power line frequency ± 0.1%.
3 For power line frequency ± 1% use 40dB or ± 3%
use 30dB.
4 Reading speeds for 60Hz and (50Hz) operation.
5 Maximum useful limit with default settling delays
defeated.
6 Speeds are for 4
1
⁄
2
digits, Delay 0, Auto-zero and
Display OFF.
(4 pages)
(164 pages)
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