trim from the front of the data. For example,
~b2~c1
says “trim 2 characters from Code 39 data and 1 character
from UPC-A data”. Remember that the
Preamble
trims leading data. This applies to One-Way and host
prompted communication.
Lastly, the
Preamble
can be used to check a minimum/maximum data length for bar code data entered. To
check for bar code length in the
Preamble
enter:
|
nnmm
where | is ASCII 124,
nn
is the two-digit minimum and
mm
is the two-digit maximum. |0210 would check for a
minimum of 2 characters and a maxi-mum of 10. If you try to scan a bar code outside the minimum or maximum
lengths, no decode will result. Entering data by keypad is not affected.
Postamble
Postambles
are user-defined data that is attached to the end of data (bar code or keyed) that is transmitted to
the host by the RF Terminal. For example, if you set a Postamble of
@@
and scanned bar code data of
12345
,
12345@@
would be transmitted to the host.
•
By default, the RF Terminal has no Postambles configured. Postambles can contain up to 15 characters.
To
set a Postamble:
1
Select option “
8”
from the
RF Terminal
Setup menu then “
2”
for
Postamble
from the
Other
Settings
menu.
2
Enter the desired characters (up to 15). Pressing the shift key will turn the cursor red to indicate
that the shift is active. Pressing shift again will turn the cursor white and return to unshifted
mode..
3
Press “ENTER”.when you are finished entering data.
•
To clear the
Postamble
and return to the default (no Postamble defined), press “
CLEAR”
.
•
You can use the
Postamble
to trim characters from the data you are entering into the RF Terminal. You can
trim from 1-15 characters from the data by creating a Postamble of:
~
x
where ~ is ASCII 126 and x is a single hex digit 1-F (corresponding to 1-15). Data that is shorter than the
trim amount is transmitted without trimming. Postambles trim characters from the end of the data. Here are
some examples:
Data
Postamble
Data Transmitted
123
XYZ
123XYZ
12345678
~3XYZ
12345XYZ
12345678
~9
12345678
12345678901
~A
1
123456
~5
1
Postamble trims trailing characters
•
Using the Bar Code ID feature and the
Postamble
, you can trim data selectively, trimming characters only
on the bar code type specified. To use selective trimming, enter:
~
bx
32
