Specifications 7
U1253B User’s and Service Guide 179
Resistance
[6][7]
500.00 Ω
[3]
0.01 Ω 1.04 mA 0.05 + 10
5.0000 kΩ
[3]
0.0001 kΩ 416 µA 0.05 + 5
50.000 kΩ 0.001 kΩ 41.2 µA 0.05 + 5
500.00 kΩ 0.01 kΩ 4.12 µA 0.05 + 5
5.0000 MΩ 0.0001 MΩ 375 nA // 10 MΩ 0.15 + 5
50.000 MΩ
[4]
0.001 MΩ 187 nA // 10 MΩ 1.00 + 5
500.00 MΩ
[4]
0.01 MΩ 187 nA // 10 MΩ
3.00+5 < 200 M
8.00+5 > 200 M
500.00 nS
[5]
0.01 nS 187 nA 1+10
Notes for resistance specifications:
a 2% over-range on all ranges except DC 1000 V range.
3 The accuracy of 500 Ω and 5 kΩ is specified after applying the Null function, which is used to subtract the test lead
resistance and the thermal effect.
4 For the range of 50 MΩ/500 MΩ, the relative humidity is specified for < 60%.
5 The accuracy is specified for < 50 nS, after applying the Null function with open test lead.
6 These specifications are defined for 2-wire ohms using Math Null. Without Math Null, add 0.2 Ω additional error.
7 Maximum open voltage: <+ 4.2 V.
Table 7-1 DC accuracy ± (% of reading + number of LSD) (continued)
Function Range
[a]
Resolution Test Current or Burden
Voltage
Accuracy