D6 "Q/D/R" button
With this button you can establish the quality "Q" of your inductor, the recip-
rocal value of Q "D" of your capacitor, and the dissipation "R" of L or C (dis-
played as the omega character). When measuring resistors, this button is not
active. The display symbols "Q", "D" and ”
Ω
" are arranged around the small-
er 4
1
/
2
digit subdisplay. The last setting will be maintained even if the instru-
ment is switched off.
The second function of the button is the number "3".
D7 > 2sec HOLD" button
With this button you can switch on or off the background lighting, but you can
also activate the hold function. Hold means to freeze a measured value. This
function is useful for changing values. The measurement will be frozen when
you press the button, the last value and the symbol "H" will be displayed to
the right of "AUTO".
At that moment no further measurement is possible until you press the button
again and allow measuring.
The symbol "H" will then disappear.
When you keep the button pressed for about 2 sec., the background lighting
is activated. The display is sufficiently lighted by four low-current LEDs so that
you can read the measured value. The light will be switched off after about 1
minute, unless you press the button once more for about 2 sec.
The second function of this button is the number "4".
D8 "MIN MAX" button
With this function you can save the maximum values ("MAX") and the mini-
mum values measured ("MIN"). Moreover, the automatic power-off function is
deactivated. Keep the button "MIN MAX" pressed when switching on the
measuring instrument. This blocks all the other buttons except the "HOLD"
and "MIN MAX" buttons. Press the button once, the symbol "R" appears in
the headline of the display. The recording of the measured values has been
initiated. After six measurements there will be an acoustic signal (beep). After
every new MIN or MAX value, there will be a new signal (beep – beep).
If you want to read the recorded MIN, MAX values, and the difference from
MAX minus MIN, and the average value AVG, you must press the buttons
"MIN MAX" alternately. First, the "MAX" value (highest recorded value) is dis-
played, when you press the button again, the "MIN" value (= lowest recorded
value).
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measured value (e.g. 34.58µF) will be compared to the pre-set reference val-
ue. The difference is more than 1%. So there will be an acoustic signal (6 x
beep) to indicate that the difference is more than 1%. When you press the
"TOL” four times, the standard is 20%. The capacitor is now within the admis-
sible tolerance with 15.3 %.
D12b) Measuring tolerances without fixed values.
During the measurement, press the "TOL.” button. The "AUTO" sym-
bol for the automatic range selection will disappear. Instead, the
"TOL" symbol will be displayed above the main display. Now also
press the "SET" button. The upper limit (e.g. 10.00µF + arrow symbol
"^") and the lower limit (e.g. 07.50µF + arrow symbol "
") will be dis-
played for a short time. Connect the voltage-free component to the
measuring leads (or the measuring base).
Example: The upper limit was entered with 10µF, the lower limit was
7.50µF. A 10µF–Elko is connected to the measuring leads. When
you press the "TOL” and "SET” buttons, the pre-set values 10.00
and 07.50µF are displayed for a short time, and then the measured
value of 09.70µF. Then there is a long acoustic signal. The percent-
age of "- 67.67 %" is displayed in the small display. The measured
capacitor is 67.67 % below the standard of 30µF.
The second function of the button is the number "9".
Warning!
When short-circuiting capacitors, there can be high-voltage
discharges. Warning! Danger to life!
Do not touch the terminals of capacitors with voltages over
35 V DC or over 25 V AC. Be careful inrooms where there are
or could be inflammable gases, vapours or liquids. == >
Danger of explosion!
Do not carry out any measurements of capacitors that are
built into circuits/circuit elements. Do not connect voltages.
The instrument might be destroyed. Do not measure live
resistors (of components or leads!), inductors or capacitors
(possibly mains voltage or high voltage!) Warning! Danger!
^
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