Datasheet

13
Full-scale display counts
Supplemental measurement specifications
Supplemental specifications
Model Reading rate Display counts
U3401A N/A 51,000
U3402A Slow 120,000
Medium 40,000
Fast 4,000
Measurement Specification
DC voltage
Measurement method Sigma Delta A-to-D converter
Input resistance
10 MW ± 2% range (typical)
Maximum input voltage 1000 VDC or PEAK AC on all ranges
Input protection 1000 V on all ranges
Response time Approximately 1.0 second when the displayed reading reaches 99.9% DC value of the tested input
signal at the same range
DC current Shunt resistance U3401A
 0.01 W to 100 W for 500 µA to 10 A ranges
U3402A
 0.1 W to 10 W for 12 mA to 1.2 A ranges
 0.01 W for 12 A range
Maximum input and
overload protection
(U3402A only)
mA input terminal: 1200 mADC or AC RMS. Protected with 1.25 A/500 V, IEC-127 sheet, FB fuse
12 A input terminal: 10 ADC or AC RMS continuous; or 12 ADC or AC RMS for 30 seconds maximum.
Protected with 15 A/600 V, breaking capacity 10,000 A FB fuse
Response time Approximately 1.0 second when the displayed reading reaches 99.9% DC value of the tested input
signal at the same range
AC voltage Measurement method AC-coupled true RMS: measures the AC component with up to 400 VDC bias on any range
Crest factor Maximum 3:0 at full scale
Input impedance
U3401A: 1 MW in parallel with <100 pF
U3402A: 1 MW ± 2% in parallel with <120 pF
Maximum input voltage U3401A: 1000 V RMS/1400 V PEAK
U3402A: 750 V RMS/1200 V PEAK
2x10
7
V-Hz product on any range, normal mode input
1x10
6
V-Hz product on any range, common mode input
Overload ranging Selects higher range if peak input overload is detected during auto range. Overload is reported in
manual ranging
Input protection U3401A: 1000 V RMS on all ranges
U3402A: 750 V RMS on all ranges
Response time Approximately 1.5 seconds when the displayed reading reaches 99.9% AC RMS value of the tested
input signal at the same range.