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- As soon as the test probes are removed from the measurement
point, the small display returns to "0000", while the set refe-
rence value remains visible in the main display.
D) COMP (= Comparison)
In this sub-function, a high/low comparison can be carried out, in
which the highest and lowest stored reference value can be com-
pared with the present measured value.
The main (large) display shows "Lo", when the present measured
value is smaller than the lowest stored (preset) reference value.
"Hi" is displayed when the present value is greater than the hig-
hest stored reference value. When the present measured value lies
between the upper and lower set limits, "Pass" is displayed. The
actual measured value is given in the small display. This function is
not available for frequency, capacity or temperature measure-
ments. To use this function, proceed as follows. There are two
methods to input or set the comparison values.
Possibility 1:
D1) As under reference value measurement, the range in which
the comparison measurement is to be performed must first be
set; For this, press the "R-H" button until the desired measu-
rement range is set.
D2) Then, press the button "COMP" until the rightmost digit in
the main display flashes. Should the button be pressed only
briefly, instead of the set mode "Err" (Error) appears in the
display. In the small display "Hi" (High = upper comparison
value) appears.
D3) Now set the desired upper limit for this digit with the buttons
"
REL" and " R-H" Then, press the "COMP" button once
more.
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5.4.3 Display-explanation and symbols
A) Digital display
The display can display up to "4000" and (-) polarity is auto-mati-
cally indicated (for negative voltages or reversed polarity). There
are also three decimal point positions.
B) Analogue bar graph
The analogue bar graph consists of 43 segments. It has a slightly
higher measuring speed than the digital display. This enables mea-
sured value trends to be more easily recognised, as with an analo-
gue multimeter, but without its mechanical disadvantages (dam-
ping of the measurement indicator).
If the measurement range is exceeded, then "OL", for Overload, is
displayed.
C) REL (= Relative)
This function enables so-called reference value measurements, in
that the present measured value is displayed in the "small" display
and the difference in the main display. This function is not availa-
ble under frequency measurements, diode tests, continuity checks
and temperature measurements. Additionally, manual range sel-
ection "R-H" must be used for "REL" measurements rather than
"Auto Range". To set a reference value, proceed as follows:
- Select the range in which the reference value is to be used; in
addition press the button "R-H" until the desired measurement
range is set.
- Measure for example under voltage measurement a DC voltage
(a battery) of 1.5V. While measuring, press the "REL" button.
The reference value (1.5 V) is now set. Now perform the volta-
ge measurement in comparison with the reference value. The
present measured value at the measurement point is displayed
in the small display, while the difference between the set refe-
rence value and the present measured value is displayed in the
main display.
