User's Manual

CDR-915L OEM DATA RADIO MODULE
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Revision M
INTEGRATOR’S GUIDE
21
If and acknowledgement is not received within the Ack-Back
Timeout time, the radio will resend the packet up to the Ack-
Back Retries setting. If an acknowledgment is received during
one of the retries, the SNDING signal will return low, indicating a
successful transmission. If there is no acknowledgement after all
retry attempts, the SNDING line will return low and the FAIL line
will go high to indicate a transmission failure
Failed Ack-Back Transmission
After 3 Retries