Measurement Procedure; Voltage Measurement; Resistance Measurement - Conrad VC-227 Bedienungsanleitung

During the MIN-/MAX recording function auto-power-off is not
active. Therefore do not forget to switch off your multimeter, if
you are finished with the min/max recording function to save
the battery life.
Set the rotary function switch to one of the above name modes ("V"
or "Ohm"). Press the key "R" once. In the menu line (top line in the
display) the respective symbol will appear. Press the key "R" once
more "MAX" will additionally appear in the display. Now the maximum
measuring values are automatically recorded. Even if you remove
afterwards the measuring cables from the measuring object, the
recorded maximum value will remain in the display until the key "R"
is pressed once more.
Now the minimum values are recorded (also negative values).
To exit the function, press the key "R" for more than 1 second or turn
the rotary function switch.
c) "Hold"-Function = "Freeze" (holding) the measuring value
Attention!
This function cannot be used if the DMM is in the function diode
test, acoustic continuity check, logic test and capacitance
measurement.
Set the rotary function switch to one of the "remaining" three modes
"V", "Ohm" or "Hz". Now you can make your measurement. If you now
want to write the data e.g. in a record press the key Hold once.
Irrespective of a later change the measuring value it is frozen.
At the same time "HOLD" will appear in the right "corner" of the
display. If you want to "release" measurement again, press the key
"HOLD"; the symbol disappears from the display, the current
measuring value is displayed.
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5. Measurement Procedure

5.1 Voltage measurement

Attention!
Do not exceed the maximum input limits, max. 750 VDC / VAC
rms (=effective)
Do not touch circuits or parts of circuits, if you measure voltage
more than 25 VACrms or 35 VDC.
To measure direct or alternating voltage proceed as follows:
1. Set the rotary function switch to position "V". You are automatically
in the mode "DC measurement". If you want to make AC measure-
ment press the key " " once.
2. Connect the measuring tips with the object under measurement
(load, circuit etc.). Each of the five DC voltage ranges or of the four
AC ranges has an input resistance of more than 10 MOhm
(parallel to < 100 pF). As soon as a "-" sign appears before the
measuring value (during DC measurement), the voltage is negative
(or the measuring cables "+" and "-", red and black have been ex-
changed)

5.2. Resistance Measurement

Attention!
Make shure all objects, circuits and components to be measured
are without voltage!
To measure resistors proceed as follows:
1. Set the measuring function switch to "Ω" (=Ohm)
2. Connect the measuring probes ("+"=red and "-"=black) with the
object to be measured.
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