Testboy TB 312 Manuel D'utilisation page 40

Operation
DC current measurement / A=
Set the appropriate range (µA, mA or A) using the selector switch. Connect the black
test lead to the "COM" jack and the red test lead to the mA or 10 A jack. Connect test
leads to the test specimen. Read off measurement result from the display. The current
direction is indicated by the sign.
You must use the "10 A" jack when measuring currents above
500 mA!
Direct current
Measuring range
500 µA
5000 µA
5 mA
50 mA
500 mA
10 A*
- 500 mA range is protected by a F 500 mA / 1000 V fuse.
- 10 A range is protected by a F 10 A / 1000 V fuse.
- in the 10 A range observe the maximum duty cycles!
* Following measurement, which should take a
max. 10 seconds, allow the instrument to cool down for
15 minutes to protect against overheating.
Press the SELECT button to switch between DC, AC and AC+DC measure-
ment methods.
40
Resolution
0.01 µA
0.1 µA
1 µA
10 µA
0.1 mA
1 mA
Accuracy
± 0.15 % of meas. val.
+ 15 digits
± 0.5 % of meas. val.
+ 10 digits
®
Testboy TB 312