User's Manual

CRD-3301 SS08xxx
12
c) Modem
The scanner turns CTS line ON before transmitting data. Other processes are the same as
BUSY/READY.
Figure 11: Hand shaking modem mode
d) No ACK/NAK
After data has been transmitted, the cradle transmits ACK to the host to notify the
transmission status on the wireless communication line.
* Between the cradle and the host: No control.
* Between the cradle and the host: No control
Control Level Notes
ACK/NAK Protocol
Scanner and Host Regardless of the host status.
Data Transmission Status Cradle Scanner
Center LED: Green Light Blinks Green Light with GR Buzzer
OK
ACK Transmission Receive ACK
None Red Light with NG Buzzer
NG
None Receive Timeout
* Between the cradle and the host: BUSY/READY or MODEM.
Control Level Notes
ACK/NAK Protocol
Scanner, Cradle and Host Monitors CTS line of the host.
CTS Line Status Cradle Scanner
Center LED: Green Light Blinks Green Light with GR Buzzer
OK
ACK Transmission Receive ACK
Center LED: Red Light Blinks Red Light with NG Buzzer
NG
None Receive Timeout