Front Panel Operation
Basic Operation 4
4-15
Note
The extra digit of resolution obtained in the SLOW and MEDIUM
Digital Filter Mode settings does not apply to the number of counts
selected by the Restart softkey.
For example, suppose the instrument is in the 22V range and the digital filter
settings are Mode = SLOW and Restart = FINE. The display now shows the
window average of the most recent 32 readings with an extra digit of resolution. If
after 20 readings the running average is 10.000032 and the 21st reading is
10.000042, the reading does not restart the filter because the extra digit of
resolution does not apply to the 10-count threshold. If, however, the 21st reading
is 10.000132, it would trigger the 10-count threshold and restart the filter. The
Filter Fill Count indicator at the top of the display increments until the window is
full as shown below:
+/- 22.0 ppm (1 year) 83 days since calibration
2/06/15 10:52am
Input 2 Filter 16/16
Auto Range 2.2 V
hvi036.eps
Note
If you change the input voltage slightly with the filter active, you will
not get correct readings until the filter has been completely flushed.
With the RESTART threshold set to coarse and a small input
change, the digital filter may not restart. Push
to manually
restart the filter.
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