B&K Precision 393 - Manual - Manual (Page 15)

15
WARNING:
Do not connect more than 400 mA DC current
across the mA input terminal or the protection
fuse will be tripped.
Higher Current Measurements (Up to 20 A)
Follow these steps to make measurements up to 20 A.
1. Connect the negative (-) side with the black test lead to
the COM input.
2. Connect the positive (+) side with the red test lead to
the 20 A input.
3. Probe with the test leads to the DUT and take the
measured reading on display.
4. If measuring more than 10 A, keep measurement time
shorter than 30 seconds followed by a 10 minute cool
down period.
Figure 4 - Connection for Higher AC or DC Current
Measurement
WARNING:
Do not connect more than 20 A DC current across
the 20 A input terminal or the protection fuse will
be tripped.
20 A uAmA COM V.Ω
AC or DC Current
+ -
A