Agilent Digital Multimeter, TRMS, 34401A, 12 Functions

Measure DC and AC voltage and current, resistance, frequency, and period with laboratory accuracy and incredible system speed. Delivers results and convenient features that minimize test and troubleshooting times. One-Year Warranty.(USA)

Specifications:

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:
10 MΩ or 0.1 V, 1 V, 10 V ranges: Selectable > 10,000 MΩ
100 V, 1000 V ranges: 10 MΩ ± 1%
Input bias current: < 30 pA 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 M. ± 2% in parallel with 100 pF
Input protection: 750 Vrms 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 100 Ω and 1 kΩ ranges. 1 kΩ per lead on all other ranges.
Input protection: 1000 V all ranges

DC current
Shunt resistance: 5 Ω 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 currentN
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) Hz¹
dc CMRR: 140 dB
ac CMRR: 70 dB
Integration time and normal mode rejection²
100 plc/1.67 s (2 s): 60 dB³
10 plc/167 ms (200 ms): 60 dB³
1 plc/16.7 ms (20 ms): 60 dB
< 1 plc/3 ms or 800 µs: 0 dB

Operating Characteristics⁴
System speeds⁶
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
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 frequency:
45 Hz to 66 Hz and 360 Hz to 440 Hz
Automatically sensed at power-on
Power consumption: 25 VA peak (10 W average)
Operating environment:
Temperature: RTD, Thermistor
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: 1 year

Notes:
1. For 1 kΩ unbalance in LO lead.
2. For power line frequency ± 0.1%.
3. For power line frequency ± 1% use 40 dB or ± 3% use 30 dB.
4. Reading speeds for 60 Hz and (50 Hz) 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.