Arq Mode Operation - Furuno FS-5075 Operator's Manual

10.2

ARQ Mode Operation

In ARQ operation, one station (information sending station) sends data to another block by
block, then listens for the acknowledge signal between blocks from the information
receiving station which requests either the next block or retransmission of the last block if
there is error. The request can be repeated up to 32 times until the complete block is
received free of error.
Establishing connection
1. Press the function key F3 to open the Operate menu.
2. Press the 1 key to select Call Station.
1:File 2:Edit 3:Operate
Station Name :
Frequency (T/R) :
Comm Status :
Station List
Sending Volume :
ABC-4M
ABC-6M
ABC-12M
ABC-8M
FURUNO
3. Select a station. (Station must be registered for use in the ARQ mode).
4. Press the Enter key. The message "Calling Station" appears. If the message shown
below appears, check both the power of the radiotelephone and the connections
between the radiotelephone and the NBDP Terminal Unit.
Message: "Station calling suspended. Check interconnections between the terminal and
main units. Press any key to escape."
When an acknowledge signal is detected, "Connect" appears in reverse video on the
communication status screen.
Note: If signal conditions are poor, connection can take a while. If the line could not be
connected in one minute, the calling stops and "CALLING FAILED" appears. Try step 3
again, one minute later. Should signal conditions worsen during message transmission,
"Error" appears in reverse video and 30 seconds later the line is disconnected.
5. Transmit message by one of the following methods:
Sending a file stored on a floppy disk
1. Press the function key F7 (WRU) to receive the answerback code of the other station.
Verify that the code from the station called is correct.
2. Press the function key F8 (HR) to transmit your own identity (answerback code).
3. Press the function key F3 and then the 3 key to open the Send File window.
4. Press the ↑ or ↓ key to select the file to send and press the Enter key.
5. Press the Enter key again.
4:Window 5:Station 6:System 7:WRU 8:HR 9:Over 10:Break
CHOUSHI-8M
Call Station
8765.00 / 8965.00(kHz)
Connect Send Lock
100(%) ARQ Error : 0
Station
ID Code
Mode
CH/Table : Channel Scantable
Num/Table:
Call Station menu
10. NBDP TRANSMITTING, RECEIVING
2002-01-15 14:41:09 UTC
Comm Mode :AQW
Error Mark Space
Station Setup
ARQ Time : 0(sec)
: ABC-4M
: 45678
: ARQ FEC
Caps-Eng
10-3