12 - 108DS457-XX20004ZZWW Fixed Mount Imager Integration Guide
Macro PDF Transmit / Decode Mode Symbols
Parameter # 188 (SSI # BCh)
Select one of the options below for handling Macro PDF decoding. In Buffer All Symbols the imager 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
Macro PDF 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 DS457 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 on page 12-109 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; see Table 12-2).
Use the beeper and LED signals provided with the DS457 to ensure proper user feedback.
•
Passthrough All Symbols: This transmits and decodes all Macro PDF symbols and performs no
processing. In this mode the host is responsible for detecting and parsing the Macro PDF sequences.
Use this mode when the imager’s BEEPER_ON signal is not used to drive a beeper (see Table 3-1 on
page 3-4). In the other modes, some Macro PDF scanning sequences provide audible feedback only, so
if BEEPER_ON is not used no user feedback is provided. In Table 12-2, all actions marked No
Transmission provide no feedback unless the BEEPER_ON signal is used. By using Passthrough All
Symbols mode every user decode is transmitted to the host where the host software can provide the
appropriate feedback.
Buffer All Symbols / Transmit Macro PDF When
Complete
(0)
Transmit Any Symbol in Set / No Particular Order
(1)
*Passthrough All Symbols
(4)
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