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MDI-4000 Series Serial Interface Manual
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6.2.4 Redundancy (1D Code Common)
When redundancy is enabled, a 1D code must be scanned and decoded multiple times with the
same result before it is considered correctly decoded. The redundancy count is the number of
times the code must be scanned in addition to the first scan. Selecting a higher redundancy
count reduces the probability of reading errors but makes the output response slower. With
high-quality printed barcodes, the default redundancy setting is adequate.
Note: This setting only affects reading 1D barcodes.
Redundancy Commands
Command Description Default
X0 Read 1 time, redundancy = 0
X1 Read 2 times, redundancy = 1
X2 Read 3 times, redundancy = 2
✓
X3 Read 4 times, redundancy = 3
BS Read 5 times, redundancy = 4
BT Read 6 times, redundancy = 5
BU Read 7 times, redundancy = 6
BV Read 8 times, redundancy = 7
BW Read 9 times, redundancy = 8
6.2.5 Add-On Waiting Time
When you scan one of these UPC/EAN barcodes, the scan engine searches for a valid
UPC/EAN add-on code for a specified length of time:
•
UPC 2 digits/5 digits add-on and GS1 composition symbol
•
EAN/JAN 2 digits/5 digits add-on and GS1 composition symbol
The behavior of the scan engine depends on whether it finds a valid add-on code:
•
If a valid add-on code is found, the scan engine immediately sends the data.
•
If there is no add-on code, the scan engine sends the data without the add-on.
•
If the add-on code is not valid, the scan engine ignores the code.
You can configure the length of time that the scan engine searches for a valid UPC/EAN add-on
code.
Add-On Waiting Time Commands
Command Description Initial Setting
XA Add-on waiting time disabled
XB Add-on waiting time: 0.25 seconds
XC Add-on waiting time: 0.50 seconds
✓
XD Add-on waiting time: 0.75 seconds