IEK UNIVERSAL Series, Operating Manual

Page: 22 / 28

2 2
Set the function switch to " / " position.
Connect the red probe to the anode of the diode and the black probe to the
cathode.
Read on the display the approx. forward voltage drop of the diode when
the flow of direct current through it. If the polarity of the diode is reversed, then
the display will show the digit "1" in the left order.
Upon completion the work, set the rotary switch in the "OFF" position.
Transistor test
Set the switch in "hFE" position.
Determine the type of transistor as NPN or PNP and determine the outlets
of emitter, base and collector. Correctly insert the transistor connector into the
corresponding jacks on the front panel:
" Å " – emitter, " Â " – base, " Ñ " – collector
of the transistor.
On the display read the approximate hFE value at the current of the base
of 10 µA and V
ce
voltage of 2.8 V.
Upon completion the work, set the rotary switch in the "OFF" position.
ATTENTION! Before the transistor testing remove the probes from the
multimeter jacks.
Signal generator (only for 832 model)
Insert the connector of black test probe in "COM" jack and insert the
connector of red test the probe into «V
W
mA» jack. The polarity of the red probe
is considered positive .
Set the range switch to « » position.
Between the "V
W
mA" and "COM" jacks there will appear a 50 Hz square
signal. The output voltage is approximately 5 V and contains the DC voltage
component, so you should use the splitter container.
Upon completion of work, remove the adapter from multimeter jacks. Disable
the multimeter by pressing the off button (the "OFF" position).
ATTENTION!
– The signal is an output one.
– The circuit is not protected against short-circuits.
– When working in this mode avoid the voltage delivery to the probes over 40 V.