11 NBDP TRANSMITTING, RECEIVING

11.2 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 may be repeated up to 32 times, until the complete block is received free of error.

Establishing connection

1. Press the function key [F3] to display the Operate menu.

Operate

1:Call Station

2:Macro Operation

3:File to Send

4:Cancel Sending

5:Scan (Start/Stop)

6:Manual Reception

7:Timer Operation

8:Manual Calling

9:Set Frequency

2. Press the [1] key to choose Call Station.

1:File 2:Edit 3:Operate 4:Window 5:Station 6:System 7:WRU 8:HR 9:Over 10:Break

 

 

 

 

 

 

 

 

 

 

 

 

 

2002-01-15 14:41:09 UTC

Caps-Eng

Station Name

:

CHOUSHI-8M

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Frequency

 

 

(T/R)

:

8765.00 /

 

Call Station

 

 

Comm Mode :AQW

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Comm Status

:

Connect

 

 

Lo

ck E

rror

 

Mark Space

 

 

 

 

 

 

 

 

 

Station List

 

 

 

 

 

 

 

Station Setup

 

 

 

 

 

Sending Volume

:

100(%)

ARQ Error : 0

 

ARQ Time : 0(sec)

 

 

 

 

 

 

 

ABC-4M

 

 

 

 

 

Station

: ABC-4M

 

 

 

 

 

 

 

ABC-6M

 

 

 

 

 

ID Code

: 45678

 

 

 

 

 

 

 

 

ABC-12M

 

 

 

 

 

Mode

 

: ARQ FEC

 

 

 

 

 

 

 

ABC-8M

 

 

 

 

 

CH/Table

: Channel Scantable

 

 

 

 

 

 

 

FURUNO

 

 

 

 

 

Num/Table:

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Call Station menu

3.Choose a station. (Station must be registered for use in the ARQ mode). Press the [Enter] key. The message "Calling Station" appears. If the message "Station calling suspended. Check radio and interconnections. Press any key to escape." appears, check both the power of the radiotelephone and the connections between the radiotelephone and the NBDP Terminal Unit.

4.When an acknowledge signal is detected, "Connect" appears in reverse video on the communication status display (see below).

Note: If signal conditions are poor, connection may take a while. If the line could not be connected in one minute, 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.

11-3

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Image 163
Furuno FS-1570, FS-2570 manual ARQ Mode Operation, 11-3, Establishing connection, Press the 1 key to choose Call Station