VOLTCRAFT 1890138 Mode D'emploi page 35

To turn off this function, press the MAX/MIN (View/►) button for approx. 2 s.
The MAX/MIN function is not available in all measuring functions.
16. LOW IMP. 400 KΩ FUNCTION
This function may only be used for voltages of a max. of 1000 V and a max. of 3
seconds!
This function allows the reduction of the measuring impedance from 10 MΩ to 400 kΩ in the voltage
measuring range. Reducing the measuring impedance suppresses possible phantom voltages which
could falsify the measuring result.
Press the -button (9) during the voltage measurement (max. 1000 V!) for a max. 3 seconds. After
release, the multimeter has the normal measuring impedance of 10 MΩ. While the button is pressed,
a signal sounds and appears on the display.
17. COMPARISON MODE (COMP MODE)
In the comparative measurement, once an upper and lower limit of the current measured parameter
is set, the main display will show only the actual status of the current measured value compared to
the preset range limit.
Proceed as follows to set the limit values for comparison mode:
1. Turn on the DMM and select the appropriate measurement range.
2. Insert the test leads into the correct measuring sockets.
3. Hold down the SHIFT/SETUP button (3) for approx. 2 s.
are now in SHIFT mode.
4. Hold down the SHIFT/SETUP button again for approx. 2 s to enter the SETUP menu.
5. To set the upper limit for the comparison mode, press the SHIFT/SETUP button until the menu
item "COMP MAX" is selected. An asterisk symbol * to the left of the menu item shows that the
menu item is selected.
6. You can now select the individual number of digits using the REL/PC (Log/◄) and MAX/MIN
(View/►) buttons and change their values with the H/LIGHT (+/COMP) or RANGE (-) button.
68
will appear on the display. You
7. Once the setting has been made, press the SHIFT/SETUP button again to set the lower limit for the
comparison mode (menu item "COMP MIN"). Here, too, you can now select the individual decimal
places using the REL/PC (Log/◄) and MAX/MIN (View/►) buttons and change their values with
the H/LIGHT (+/COMP) or RANGE (-) button.
The limit settings do not have any units. The actual value of the limit results from the range set
in the measurement.
Example:
You have set the lower limit as "00900" and the upper limit as "01000" in the SETUP menu. In
a comparison measurement in the "mV
follows: "009.00 mV" (lower limit); "010.00 mV" (upper limit)
8. Now press the SHIFT/SETUP button to set the measurement status (menu item "COMP TYPE").
9. Press the REL/PC (Log/◄) or MAX/MIN (View/►) buttons to select "OUTER" or "INNER". When
"OUTER" is selected, the measured value is identified as passed (PASS) if it is outside the upper
and lower limits; when "INNER" is selected, the measured value is identified as passed (PASS) if
it is within the upper and lower limits.
10. Hold down the SHIFT/SETUP button (3) for approx. 2 sec to save the settings and exit the SETUP
menu. You will also exit SHIFT mode.
Performing a comparison measurement:
1. Select the measuring range.
2. Hold down the SHIFT/SETUP button (3) for approx. 2 s.
are now in SHIFT mode.
3. Now press the H/LIGHT (+/COMP) button (10a). The symbol
appear on the display.
The automatic measuring range selection is deactivated. Before beginning the
measurement, make sure that you have set the correct measuring range. You can
select this using the RANGE (-) button.
4. Connect the two test prods with the object to be measured.
5. The measured value is displayed with the appropriate units.
6. Depending on the previous setting the display will indicate if the currently measured value is within
or outside of the preset limits with the symbols
7. Press the H/LIGHT (+/COMP) button (10a) again to end the comparison mode.
" measuring range, the values will be displayed as
will appear on the display. You
and the preset limits will
(pass) and (did not pass).
69