6 - 22 Symbol LS9203/LS9203i Product Reference Guide
ENQ
When this option is selected, the scanner waits for an ENQ character from the host before transmitting data. If an
ENQ is not received within the Host Serial Response Time-out, the scanner issues an error indication and discards
the data. The host must transmit an ENQ character at least every Host Serial Response Time-out to prevent
transmission errors.
ENQ
ACK/NAK with ENQ
This combines the two previous options.
ACK/NAK with ENQ
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