To obtain reliable measurements, the contact
points on the device being tested must be free
from dirt, oil, solder lacquer, etc.
1. Connect the black test lead to the COM jack and the red test
lead to the VΩmAhFE jack.
2. Set the rotary switch to the desired measuring range Ω. If you
are in any doubt about the measuring range, start with the highest
range and then reduce step by step until you find the ideal range.
If a reading appears on the display before the test probes are
connected to the device being tested, this is due to the sensitivity
of the measurement input, and is of no significance.
3. Hold the test probes against the device being tested, read off the
measured value, and retain it if required with the Hold button.
5.5 | Diode test
IMPORTANT!
Risk of damage!
• The diode MUST first be de-energised, and any
connected capacitors must be discharged.
1. Connect the black test lead to the COM jack and the red test
lead to the VΩmAhFE jack.
2. Set the rotary switch to the
3. Hold the red test probe against the diode's anode and the black
test probe against its cathode. Now read off the value for the
conducting-state voltage (values between approx. 600 mV and
3000 mV, depending on diode type). The diode "blocks" the voltage
in one direction ("reverse direction") In this direction, you will get
the value "1". If you are still able to measure a voltage despite
reversing the test probes, this means the diode is faulty.
46
function.