Intermec MicroBar NX Reference Manual page 143

ACK positive acknowledge character
Scanning ACK activates the ACK/NAK protocol.
After a successful message transmission, the MicroBar NX waits until the end of the
protocol timeout before reading a new bar code (
above in this section). If there is no positive acknowledge (ACK) before the end of the
specified timeout, the MicroBar NX emits 6 error beeps.
Not Used (*)
To use a different character for ACK:
1. Scan Compose Other ACK Character.
2. Scan the desired character code (
Compose Other ACK Character
MB/NX/RM/00/E/970131
RS-232—Output to host system
Hardware/software protocols timeout
ACK (HEX 06)
ASCII character codes ).
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