Continuous Diode Test - Fluke SMFT-1000 User Manual

SMFT-1000
Users Manual
5. Push  to start the measurement.
When the measurement is complete, the display shows:
measured voltage of blocking diode

measured current of blocking diode

Passed:  and a short beep noise indicate the test passed when the results are greater
than the preset limits.
Failed:  and multiple beeps indicate the test failed when the results are less than the
preset limits.
This test checks that the voltage drop of the diode is within the expected range (limit).
If the voltage drop is too low the diode is shorted, if the voltage is "OL" then the diode
is open.
6. Push  to save the results to memory.
A confirmation message with ID number shows on the display and then returns to the test
screen.
Troubleshoot: If the voltage is not within an acceptable range, use the continuous test to
find the diode that fails. See

Continuous Diode Test

Use the continuous diode test to test each diode of a PV cell and find the diode that fails.
To set:
1. Turn the rotary switch on the PV Analyzer to
The display shows the default Bypass Diode test mode.
2. Push  for the Diode test mode.
3. Connect the test leads from the PV Analyzer to a diode inside the panel junction box or
disconnected diode.
Tip: Push  to see a connection diagram.
4. Connect green test lead to positive anode.
5. Connect yellow test lead to negative cathode.
For this test the diodes must not be powered or operational.
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