GMC-I Gossen-Metrawatt GmbH 11
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3.3 Quick Measurements
If you wish to perform quicker measurements than those
possible with the automatic measuring range selection
function, make sure to establish the appropriate measuring
range:
•by manual measuring range selection, i. e. by selecting
the measuring range with the best resolution, see
chapter 3.2.
or
•via DATA function, see chapter 5. After the first measure-
ment, the proper measuring range will be automatically
determined so that measurements are performed
more rapidly from the second measured value
onwards.
With both functions, the established measuring range is
maintained for the subsequent series mode measure-
ments.
4LC Display
4.1 Digital Display
The measurement value appears at the digital display with
correct decimal place and plus or minus sign. The selected
unit of measure and the type of current are displayed as
well. A minus sign appears in front of the numeric value for
the measurement of zero-frequency quantities if the posi-
tive pole of the measured quantity has been connected to
the “⊥” input. If the measuring range upper limit is
exceeded for the following measured quantities, “OL”
(overload) appears at the display:
V DC, I DC, Ω, Hz, F,
V (AC, AC+DC), I (AC+DC), dB (V), 30 mF: 30999 digits
3 nF ... 3 mF 3099 digits
The digital display is refreshed at various intervals depend-
ing upon the measured quantity (see Display Update on
page 51).
4.2 Analog Display
The analog display with simulated pointer demonstrates
the dynamic characteristics of a moving coil mechanism
and is refreshed 20 times per second. The analog display
is especially advantageous for the observation of measure-
ment value fluctuation, as well as during balancing.
The analog display includes its own polarity indicator. The
analog scale has a negative range including 5 scale mark-
ings which allows for the precise observation of measure-
ment value fluctuations which drop below zero. If the mea-
surement value exceeds the display range, the triangle
appears at the left hand side of the display and polarity is
reversed at the analog display after approx. 0.7 s. If the
measuring range is exceeded (> 30999 digits, within a
range of F : > 3099), the triangle appears at the right hand
side of the display.
Scaling for the analog display is adjusted automatically,
which is quite helpful for manual measuring range selec-
tion.
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