Hioki 3511-50, Instruction Manual, Page: 41 / 140

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4.1 Comparator Function
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NOTE
NOTE
(2) Use the COUNT setting key to change the value digit by digit.
The value in the blinking digit may be altered. Navigate through the digits
with the
keys, and through values with the keys.
To set the upper or lower limit to OFF, move the cursor to the left or right
end with
. Continue pressing if the cursor is at the left or
right extremes for 2 s or longer. The display changes to "-----." At the next
step, press
to store the OFF setting.
Press the COUNT setting key when "-----" is displayed to redisplay the
former value.
Upper and lower limits are stored as counts displayed, regardless of test
conditions. As test conditions change, the absolute values indicated by
the counts change accordingly.
Use normal test conditions for comparator test conditions. Set upper and
lower limits only after setting test conditions for the comparator to be used
in normal test mode.For example, to set the upper limit to 0.999
µ
F when
test frequency is 120 Hz and test range is 1.45
µ
F in C-D display, enter
"09990."
(3) Press to store the setting, then move to the setting mode for the next
upper and lower limits.
If you press
instead of , the mode switches to the next upper
and lower limit setting mode without recording the setting.
The following verifications are not performed when upper and lower limits
are saved. Note that incorrect upper and lower limit settings will produce
incorrect judgments.
1. Is the set value within the parameter display range?
2. Is the relation between upper and lower limits correct?
The comparator judgments are made in the following order:
1. If the measured value is "OVER FLOW", HI is displayed, and the value
is "UNDER FLOW", LO is displayed.
2. Is the measured value greater than the lower limit or not? If not (NG
judgment result), then LO is displayed.
3. Is the measured value lower than the upper limit or not? If not (NG
judgment result), then HI is displayed.
4. If both 2 and 3 give an affirmative result, then IN is displayed.
No judgment is made if both upper and lower limits for a parameter are set
to OFF.