Multiple Reads
(1-99)
Enter the number of identical reads the scanner must decode (in one reading gate) before transmitting the result to the host
device. This process increases output reliability. The selected scanning frequency and the speed at which the bar code is moving
past the CLV should be considered when making this selection. If the number of multiple reads specified by the user is not ful-
filled, the CLV will send the bar code string or error string (software selectable) to the host along with the error status ST=5, if the
ST value has been placed in the separator.
Check Digit Test
For printed bar codes with an integrated check digit in the useful characters (last position before stop character), the check digit
increases error detection and therefore reading reliability. With a “yes” response, the decoder activates a routine to compare the
printed check digit with the check digit being calculated. The decoder then outputs the bar code data with the error status as fol-
lows: If the check digit test is successful, ST=0 (good read); if the check digit test is not successful, ST=1 (wrong check digit).
The error status is output only if the error status value is activated as part of the data string. If the user responds here with a “no,”
no check digit test will be carried out.
Transmit Check Digit
A “yes” allows the check digit to be transmitted to the host device. With a “no” response, the check digit is not transmitted.
Note: The CLV automatically truncates the last digit of the data if “no” to transmit check digit is selected.
Transmit Start/Stop
A “yes” response directs the decoder to output information with start/stop characters “a,” “b,” “c” or “d,” together with useful char-
acters. A “no” response suppresses the output of start/stop characters.
Identical Start/Stop
A “yes” response directs the decoder to output only printed bar codes having the same start and stop characters. A “no” response
allows any combination of start and stop characters to be output.
CODE 128
An alphanumeric code with the following character set: 128 ASCII characters; four special characters; four control characters;
three start characters; one stop character. Character sets A, B, or C can be represented (these character sets can be referenced
in the Uniform Symbology Specification).
A check digit test is always performed, but does not print out.
S o f t w a r e C o n f i g u r a t i o n s
22
S
I
C
K
O
p
t
i
c
-
E
l
e
c
t
r
o
n
i
c
B
a
r
C
o
d
e
S
c
a
n
n
e
r
s
3
Figure 3-10 Code 128
