Overfilling Transmission Buffer; Attempt To Transmit An Empty Buffer - Motorola Symbol DS3578 Product Reference Manual

10 - 34 Symbol DS3578 Digital Scanner Product Reference Guide

Overfilling Transmission Buffer

The Code 39 buffer holds 200 characters. If the symbol just read results in an overflow of the transmission buffer:
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The digital scanner indicates that it rejected the symbol by issuing three long, high beeps.
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No transmission occurs. The data in the buffer is not affected.

Attempt to Transmit an Empty Buffer

If you scan the Transmit Buffer symbol and the Code 39 buffer is empty:
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A short low/high/low beep signals that the buffer is empty.
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No transmission occurs.
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The buffer remains empty.