Table 5-2
Verification Tests (continued)
Step
Test Function
Press
to go to
10
function
Turn the rotary switch to
11
position
Press
to go to
12
function
Turn the rotary switch to T1 or T1T2
13
position
14
Press
to go to T2 function
[a] The accuracy of 1 kΩ and 10 kΩ are specified after Math Null, that is used to substrate the test lead resistance and the thermal effect.
[b] For the range of 100 MΩ, the RH is specified for <60%.
[c] Current can be measured from 50 mA to 440 mA continuously. An addition of 0.2% to the specified accuracy when measuring a signal greater
than 440 mA to 1100 mA for 30 seconds maximum. After measuring > 440 mA current, cool down the multimeter for twice the measuring
time taken before proceed for low current measurement.
[d] Current can be measured from 0.5 A up to 10 A continuously with the maximum operating temperature of 50 ºC. An addition 0.3% needs to be
added to the specified accuracy if the signal measured is in the range of 10 A to 19.999 A for 15 seconds maximum. After measuring a current
of > 10 A, leave the multimeter to cool down for 60 seconds before applying low current measurement.
Keysight U1241B and U1242B User's and Service Guide
Range
100 mA
mA
440 mA
10 A
10 A
A
10 A
–40 ºC until
[e]
1000 ºC
–40 ºC until
[e],[f]
1000 ºC
Performance Tests and Calibration
5520A Output
100.00 mA, 500 Hz
100.00 mA, 1 kHz
[c]
400 mA
, 500 Hz
[c]
400 mA
, 1 kHz
[d]
10.000 A
[d]
10.000 A
, 500 Hz
[d]
10.000 A
, 1 kHz
–40 ºC
0 ºC
1000 ºC
–40 ºC
0 ºC
1000 ºC
Error from nominal 1 year
U1241B
U1242B
± 1.05 mA
± 1.55 mA
± 4.5 mA
± 6.5 mA
± 65 mA
± 105 mA
± 155 mA
± 1.4 ºC
± 1ºC
± 11ºC
± 1.4 ºC
± 1 ºC
± 11 ºC
5
71