Unitech MS842 User Manual

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Copyright 2013 Unitech Electronics Co., Ltd. All rights reserved. Unitech is a registered trademark of Unitech Electronics Co., Ltd.
Macro PDF Features
Macro PDF is a special feature for concatenating multiple PDF symbols into one file.
The decoder can decode symbols that are encoded with this feature, and can store
more than 64 Kb of decoded data stored in up to 50 MacroPDF symbols.
CAUTION: When printing, keep each Macro PDF sequence separate, as each sequence has unique identifiers.
Do not mix bar codes from several Macro PDF sequences, even if they encode the same data. When scanning
Macro PDF sequences, scan the entire sequence without interruption. When scanning a mixed sequence, two
long low beeps (Low/Low) indicates an inconsistent file ID or inconsistent symbology error.
Macro PDF User Indications
In this mode the decoder provides the following feedback.
Passthrough All
Symbols
Transmit Any Symbol
in Set
Buffer All Symbols
User Scans
Beep T Beep T Beep T
Last Macro PDF in set Decode Beep
Y
Decode Beep
Y
Decode Beep
Y
Any Macro PDF in set except last Decode Beep
Y
Decode Beep
Y
2 Short Low
N
Macro PDF is not in current Set Decode Beep
Y
2 Long Low
N
2 Long Low
N
Invalid formatted Macro PDF Decode Beep
Y
2 Long Low
N
2 Long Low
N
Macro PDF from a set has already
been scanned
Decode Beep
Y 4 Long Low N 4 Long Low N
Out of Macro PDF memory N/A 3 Long Low
N
3 Long Low
N
Any non-Macro PDF scanned during a
set
N/A
- 4 Long Low N 4 Long Low N
Flush Macro PDF Low High
N
5 Long Low
N
5 Long Low
Y
Abort Macro PDF High Low
High Low
N
High Low
High Low
N
High Low
High Low
N
Notes:
1. The beep only sounds if the *BEEPER_ON signal is connected.
2. The column marked T indicates whether the symbol is transmitted to the host.
N = No transmission.
Macro PDF Transmit / Decode Mode Symbols
Select one of the options below for handling Macro PDF decoding. In Buffer All
Symbols the decoder can handle sets of up to 50 maximum-sized Macro PDF
symbols. In all other modes there is no limit to the size of the MacroPDF set.
 Buffer All Symbols / Transmit Macro PDF When Complete: This transmits all
decode data from an entire Macro PDF sequence only when the entire
sequence is scanned and decoded. Use the beeper and LED signals provided
with the MS842 when using this mode to ensure proper user feedback. If the
decode data exceeds the limit of 50 symbols, there is no transmission because
the entire sequence was not scanned. Use the parameter Flush Macro Buffer to
purge the buffer.
 Transmit Any Symbol in Set / No Particular Order: This transmits data from
each Macro PDF symbol as decoded, regardless of the sequence (although
some error handling is performed). When selecting this mode, enable Transmit
Macro PDF Control Header. Also use the beeper and LED signals provided with
the MS842 to ensure proper user feedback.

Unitech MS842 Specifications

General

Type	Handheld bar code reader
Sensor type	Laser
Scanner type	1D/2D
2D (matrix & stacked) barcodes supported	-
Connectivity technology	Wireless
Power source type	Battery
Buzzer	Yes
Product color	Black, Grey, Yellow

Weight and Dimensions

Weight	- g