Keysight U2741A, Service Manual

Page: 34 / 54

20 U2741A USB Modular 5.5 Digits Digital Multimeter Service Guide
2 Performance Test Calibration
Ohms gain verification test
2- wire ohms configuration:
(
CONFigure:RESistance [<range|MIN|MAX|AUTO>
[,resolution|MIN|MAX|DEF>]])
4- wire ohms configuration:
(
CONFigure:FRESistance [<range|MIN|MAX|AUTO>
[,resolution|MIN|MAX|DEF>]])
1
Select the
Ohms
function.
2
Select each range in the order based on the input
resistance in
Table 2- 5 . Compare the measurement results
with the appropriate test limits shown in the following
table. (Be certain to allow for appropriate source settling.)
[1]
Select NPLC 20 digit resolution.
[2]
The specifications are for 2-wire or 4-wire ohms using the null function in
KMM software. Add 0.2
Ω
error if null function is not used in KMM software.
Q = Quick performance verification test points
Table 2-5 Ohms gain verification test
Input Function
[1]
Range Quick check Error from nominal
1 year
100
Ω
2-Wire Ohms
and
4-Wire Ohms
100
Ω
±38 m
Ω [2]
1 k
Ω
1 k
Ω
Q ±350 m
Ω [2]
10 k
Ω
10 k
Ω
±35
Ω [2]
100 k
Ω
100 k
Ω
±35
Ω
1 M
Ω
1 M
Ω
±650
Ω
10 M
Ω
10 M
Ω
Q ±25.5 k
Ω
100 M
Ω
100 M
Ω
±2.005 m
Ω