Dranetz DranTech Xtra, Руководство пользователя

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DranTech X
TRA
User’s Guide
Control Functions
∞
The reference value can be cleared by once again pressing the
ZERO | ESC key.
Notes Regarding Relative Measurement
• Relative measurement effects the digital display only. The analog
display continues to read out the original measured value.
• In the case of relative measurement,
Ω
/ F or AC quantities may
also appear as negative values.
4.3 Display (LCD)
4.3.1 Digital Display
Measured Value, Unit of Measure, Type of Current, Polarity
The measured value with decimal and plus or minus sign appears at
the digital display. The selected unit of measure and type of current
are displayed as well. A minus sign appears to the left of the value
during measurement of zero-frequency quantities, if the plus pole of
the measured quantity is applied to the “
⊥
” input.
The “0 . diSP ” parameter can be used to determine whether leading
zeros will appear or be suppressed at the measured value display (see
chapter 6.4).
Overranging
If the upper range limit of 12,000 digits is exceeded “0L” (overload)
appears at the display.
Exceptions: “0L” appears as of 1200 digits for capacitance
measurement, and as of 5100 digits for diode testing.
4.3.2 Analog Display
Measured Value, Polarity
The analog display demonstrates the dynamic performance of a mov-
ing-coil mechanism. This display is especially advantageous for ob-
serving measured value fluctuation, and for balancing procedures.
Two different display modes can be selected in the “ SEt ” menu with
the help of the “A.diSP ” parameter (see chapter 6.4):
• Bar graph
• Pointer: The current measured value is tracked in real-time.
The analog scale displays a negative range of 2 scale divisions for the
measurement of zero-frequency quantities, allowing for precise obser-
vation of measured value fluctuation around zero. If the measured
value exceeds the negative range of 2 scale divisions, polarity is re-
versed at the analog display.
Scaling of the analog scale is automatic. This is very helpful for man-
ual measuring range selection.
Overranging
Overranging in the positive range is displayed by means of the right
triangle symbol.
Refresh Rate
In the bar graph and pointer modes, the analog display is refreshed 40
times per second.