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9.2.4 How to Select the Input Filter (Pen Model)
Noise in the measured signal can be suppressed in the final measurement by using an
input filter. This is sometimes referred to as signal damping. The purpose of this setting
is to select for each channel whether or not to use a filter, and if so, to select a time
constant of damping.
A filter works as follows:
If a filter is used, the response time can be selected from 2, 5 or 10 seconds.
You can choose from three filters:
•2 seconds
•5 seconds
• 10 seconds.
The initial value is ‘OFF’.
SETTING PROCEDURE:
Enter the SET UP Mode by turning ‘ON’ the power while pressing and holding the
ENT-key until the SET UP display appears.
Use the UP/DOWN-keys to select the display ‘SETUP=FILTR’. Press the ENT-key.
Select the channel No. for which you want to specify a filter. Then press the ENT-key.
Select the type of filter you want to use. You can choose from no filter (OFF), 2
seconds, 5 seconds or 10 seconds. Press the ENT-key. The display ‘*FILTR SET*’ will
appear.
The filter setting has been completed, but has not been stored yet. Press the ENT-key to
continue the setting for other channels or the ESC-key to adjust other settings in the
SET UP Mode.
Before leaving the SET UP Mode, you have to store your new settings. Press the ESC-
key to return to the ‘SETUP=FILTR’ display and then select the ‘SETUP=END’
display.
Press the ENT-key. Select ‘END=STORE’ to keep your new settings or
‘END=ABORT’ and press the ENT-key. After a few seconds, the Operation Mode will
appear.
Filter
ON
Filter OFF
meas.
values
63.2%
2, 5 or 10 sec.
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