Denso BHT-8000 User Manual page 73

[4.4] Setting the special bar-code scanning parameters
BHT-8000/8100
BHT-8000D
Black-and-white inverted label reading function (INVERT)
This function makes it possible to read white bars on a black background.
Activating this function might increase the frequency of bar-code reading errors. This function can
usually be set to OFF.
DECODE LEVEL
You can set the decode level. Decreasing the level value increases the bar-code reading efficiency, but
the BHT might misread low-quality bar codes (split or stained). To the contrary, increasing the level
value decreases the bar-code reading efficiency, but it will diminish the possibility of misreading.
The entry range of the level value is from 1 to 9 and the default is 4.
Selecting "4: BARCODE" on the SET SYSTEM menu calls up the
screen shown at left.
Highlighted is the current setting.
[1] INVERT:
[2] DECODE LEVEL:
[3] ITF:
[4] STF:
[5] CODABAR:
[6] LED MODE
Select a desired item by using the numerical keys or F5 and F6 keys,
and then select a desired setting by using the F7 and F8 keys.
To increase the decode level, press the F8 key; to decrease it, press
the F7 key.
To increase the number of digits to be read for ITF, STF or Codabar,
press the F8 key; to decrease it, press the F7 key.
Press the ENT key.
To return to the SET SYSTEM menu, press the C key.
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Activates or deactivates the black-and-white
inverted label reading function.
Sets the decode level.
Sets the minimum number of digits to be read
for ITF.
Sets the minimum number of digits to be read
for STF.
Sets the minimum number of digits to be read
for Codabar.
Sets the illumination LED ON/OFF mode.
(Only for the BHT-8000D)