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h) transistor test “hfE”
transistor tests can only be performed with the optionally available measuring adapter. No volt-
age may be applied and measured on the adapter.
- Turn the DMM on and select measuring range “hFE”
- Disconnect all measuring leads from the measuring instrument.
- Attach the optionally available measuring adapter to the three measuring
sockets COM (5) + V (8) + mA (7)
- Insert the transistor to be tested into the corresponding header observing
the correct polarity. The left header is intended for NPN types and the right
header for PNP types. SMD types can also be tested.
- The amplification factor “hFE” is displayed
- After measuring, remove the adapter and turn the DMM off. Turn the rotary
switch to the position “OFF” or turn the device off via the “POWER” switch.
i) temperature measuring (only vC150-1)
the enclosed temperature sensor is designed for a temperature range from –40 to + 230 °C, which
is sufficient for most applications. to be able to use the full measuring range of the device, you
need an optional k-type sensor. here you might need to use the optional measuring adapter.
- Turn the DMM on and select measuring range “°C”
- Disconnect all measuring leads from the measuring instrument.
- Connect the enclosed temperature sensor with the DMM. The red plug must be inserted into the socket “°C” (7),
the black plug into the socket “COM” (5).
- Now expose the sensor tip to the temperatures.
- The display shows the temperature on the sensor. If “I” appears, the measuring range was exceeded or there is
no sensor connected.
- After measuring, remove the adapter and turn the DMM off. Turn the rotary switch to the position “OFF” or turn the
device off via the “POWER” switch.
If the two sockets “COM” (5) and “°C” (7) are short-circuited, the ambient temperature of the measuring
device is displayed.
The use of K-type sensors with miniature plugs requires the application of the optional measuring adapter
(see chapter “Optional measuring adapter”).
