Technical data

Specifications 8
U1401A User’s and Service Guide 149
[1]
Crest factor: ≤ 3
AC+DC specifications
[1]
Input impedance: 1.1 MΩ in parallel with <100 pF (nominal) for the range of 5 V and above, and 1 GΩ (nominal) for the
50/500 mV range. Crest factor: ≤ 3
Table 8 - 4 AC current specifications
Function Range Resolution
Accuracy
45 Hz to 5 kHz Burden voltage/shunt Overload protection
AC current
[1]
(True-rms: From
5% to 100% of
range)
50 mA 1 μA 0.6% + 20 0.06 V (1 Ω) 250 V, 630 mA
Quick acting fuse
500 mA 10 μA0.6 V (1 Ω)
Table 8 - 5 AC+DC mV/voltage specifications
Function Range Resolution
Accuracy
Overload protection45 Hz to 5 kHz 5 kHz to 20 kHz
AC+DC mV/
voltage
[1]
(True-rms: From 5%
to 100% of range)
50 mV 1 μV 0.8% + 70 1.6% + 70 250 Vrms
500 mV 10 μV 0.8% + 25 1.6% + 25
5 V 0.1 mV
50 V 1 mV
250 V 10 mV