Technical data

Specifications and Characteristics 6

U3401A User’s and Service Guide 91

AC voltage (True RMS AC + DC Coupling Mode)

• Measurement method

• AC+DC coupled true RMS — measure the AC component with up to 400 VDC bias on any

range

• Crest factor

• Maximum 3:0 at full scale

• Input impedance

• 1 MΩ in parallel with <100 pF

• Maximum input voltage

• 1000 V RMS / 1400 V PEAK

• 2x10

V-Hz product on any range, common mode input

• 1x10

V-Hz product on any range, normal mode input

• Overload ranging

• Will select higher range if peak input overload is detected during autoranging. Overload is

reported in manual ranging.

• Input protection

• 1000 V RMS on all ranges

• Response time

• Approximate 1.5 second when the displayed reading reaches 99.9% AC RMS value of the

tested input signal at the same range.

Table 6 - 9 Measurement specifications (continued)