4. Installation, Setup and Check
JCY-1800/1850 VDR/S-VDR Maintenance Software Instruction Manual
20
DOC No. 7ZPNA4014
4.3.4.2.2. Communication parameters and Sentence format
Set the communication parameter and Set the sentence format.
Once the type is selected, this parameter is automatically set by default. There is no need to change this value.
TYPE NMEA AIS DRY-CNT DCNT+A/D A/D NAV-IF NSK
Baud Rate 4800 38400 4800 4800 4800 19200 4800
Data Bits 8 8 8 8 8 8 8
Stop Bits 1 1 1 1 1 1 1
Parity None None None None None None None
Checksum enable enable enable enable enable enable enable
Header $
！
$ $ $ $ $
Delimiter 0D0A 0D0A 0D0A 0D0A 0D0A 0D0A 0D0A
Max Length 82 82 82 82 82 82 82
Max Interval 15 15 315 15 15 15 15
1) Header
Enter the header character.
“$” is entered in case of connecting to the general sensor units.
In case of connecting to the AIS, enter “!” as the header character.
When “!” is entered, the DAU receives the NMEA sentences with “$” and “!” as header.
2) Delimiter
Enter the delimiter in the form of codes. The delimiter is expressed as codes not as characters.
“<CR><LF>“can be codified as “OD OA”.
3) Maximum sentence length
Set the maximum length of the data sentence. Any data sentence of which length exceeds this maximum
sentence length is rejected and an error is reported. The maximum length of the NMEA sentence is 82Byte.
4) Maximum time interval of receiving
Set the maximum time interval of receiving. If the time taken to receive a data sentence exceeds this
maximum time interval, the sentence is rejected and an error is reported.
For example, suppose ZDA, DTM, and GGA are set to be received. If the time taken to receive all ZDA,
DTM and GGA exceeds the maximum time interval, all the information is rejected and an error is reported.
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