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period of inactivity (a period during which no buttons are

pressed). The period of time can be selected as follows:

no FDV does not shut off automatically

1 shuts off after 1 minute of inactivity

5 shuts off after 5 minutes of inactivity

10 shuts off after 10 minutes of inactivity

20 shuts off after 20 minutes of inactivity

30 shuts off after 30 minutes of inactivity

4. Digital Filter (Fltd)

Minor vibrations and electrical background noise in the test area, not

related to the test, may be detected by the FDV. If it is impossible to

isolate the FDV from these vibrations and/or electrical noises the

FDV readings may be erratic. The FDV features four (4) levels of

filtering for both the displayed and peak readings to minimize the

effects of background noise.

a) Filtering for Current Readings - The level of filtering required for

currently displayed readings is quite similar to that required for peak

readings. In this case however, the filtering for currently displayed

readings will affect how frequently the display will be updated.

Filtering of currently displayed readings may be set as follows.

Fc1 Average of 1 sample (fast display update)

Fc2 Average of 2 samples

Fc4 Average of 4 samples

Fc8 Average of 8 samples (slow display update)

b) Filtering for Peak Readings - The level of filtering required for peak

readings is dependent on the nature of the test and the surrounding

environment. Filtering will affect the maximum peaks recorded. To

capture critical peak force, the lowest level of filtering (FP1) is

recommended. If the gage is used in an environment with excessive

background noise, the highest level of filtering (FP8) is recommended.

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