FUTABA FDL01TU, Instruction Manual

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one and then it outputs a
successive completion response
(P0) to its terminal equipment.
When the remote receiver modems receive the transmitted data successfully, they output
the data to their terminal equipments normally and do not return
ACK packet
. Once a valid
data packet has been received correctly by a receiver modem, rest of data received during
any subsequent retransmissions are discarded and not output to its terminal equipment.
Sender Modem Remote Modem
Figure 3–3: Broadcast Transmission
3.2.3 Transmit Command and Receive Header
Six transmit commands can be used in packet transmission mode . Both text and binary
data can be sent directly from modem-to-modem or sent through a third FDL01TU modem
configured as a repeater . The receiver modem automatically determines the transmitted
data format and communication path from the information in the received packet header.
Refer to the table below for a list of the transmit commands and the corresponding header
component.
Transmit Command Receive Header
Function
TXT RXT Text data transmission
TBN RBN Binary data transmission
TXR RXR Text data transmission via repeater
TBR RBR Binary data transmission via repeater
TX2 RX2 Text data via two repeaters
TB2 RB2 Binary data via two repeaters
Table 3–5: Transmit Commands and Receive Headers
Data Transmission
Retransmission
Retransmission
Retransmission
・
・
・
End