Sd4 Inverted - JRC JLN-900 Installation And Instruction Manual

The NMEA messages are routed according to the following default NMEA talkers list if the
NMEAfilterT_rev.txt
NMEA listeners
SPEED + DEPTH
SPD AVERAGE +DPT
SD4 DUAL LOG
SD4 MASTER

SD4 INVERTED

SD4
LOG 1
LOG 2
ESD
VDR
MFD
GPS
OTHER
## Transmit VDDPT instead of SDDPT if no valid SDDPT for 10 sec.
@@ Modified data output. Averaged speed according to time constant in menu S15,
or negative (inverted) speed for a SD4 INVERTED nmea output channel.
?? The question mark
character.
6.1 SD4 INVERTED
If an NMEA output channel is set to be an SD4 INVERTED listener, all VBW and PSALL
messages on that channel will have inverted signs of the speed and direction information fields.
This is useful for DAT (Double Acting Tankers) and double-ended ferries. For example, an
SD4-3 display on that channel will show 5 kn in the vessel's astern direction instead of 5 kn in
the vessel's ahead direction, and an SD4-5 Docking Display will show 1 kn starboard at the
bow instead of 1 kn port at the stern.
It is possible to deactivate the SD4 INVERTED function by using an OPTO input. See section
5.2.3 Menu I, Inputs.
Note! The SD4-2 Main Display transverse speed window only reads the "bow speed" field in
the NMEA sentence. Therefore, the docking log functionality has to be activated in order to get
the correct data in a transverse speed window of the SD4 INVERTED.
If there is a rot-gyro NMEA input to the Sig. Distributor, enter the following in the menu
system:
S2 DL GYRO INPUT = NMEA
filter-file is in use. The following table is stored in the filter-file.
Transmitted messages are starting with
VDVBW; VDVLW; ##DPT; ??ALR; PSALL; VDHBT; VDALF;
VDALC; VDARC
@@VBW; VDVLW; ##DPT; ??ALR; @@ALL
VDVBW; PSALS,5; PSALS,6; PSALS,9; PSALc; PSALR,,;
PSALU,1; SDSTN
VDVBW; VDVLW; ??DPT; VDALR; PSALS,5; PSALS,6;
PSALS,9; ??ROT; PSALL; PSALR,,, PSALW; SDSTN
@@VBW; VDVLW; ##DPT; ??ROT; @@ALL; PSALR;
SDSTN
VDVBW; VDVLW; ##DPT; ??ROT; PSALL; PSALR; SDSTN
PSALS,0; PSALS,1,; PSALS,1?,; PSALS,10; PSALC; VDACK
PSALS,0; PSALS,1,; PSALS,1?,; PSALS,10; PSALC; VDACK
VDDPT; SDACK; PSALX; VDVBW; PSALW; G??; SDSTN
VDVBW; VDVLW; ##DPT; ??ALR; PSALc; SDSTN
VD; ??ROT; PSALL
G??
Not yet implemented
Table 5 NMEA listeners
"?" is used as a wildcard and can be replaced by any
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