6-30
To calculate transversal speed of both ends of the ship the Sig. Distributor needs settings and
inputs accordingly.
x SOG speed input, longitudinal and transversal.
x Rate-Of-Turn input, NMEA ($xxROT) or analogue, setting is made in menu S2.
x Geometry of the ship referring to the transducer mounting. These settings are made in
menu S3 and S4. Both must be set to more than zero in order to activate the docking log
calculations.
When these three conditions are fulfilled the Sig. Distributor starts to calculate docking log
information to be presented on e.g. docking log display SD4-5 Docking Display.
The Sig. Distributor will not calculate docking-log information if the menu S1 is set to R1a.
S5 DL NMEA
VDVBW
Specifies in which format the docking-log information is transmitted over the serial NMEA
interface. Can be set to VDVBW, PSALL or PSALL/VBW STERN
VDVBW: This is the standard Velocity Doppler log format, which includes two fields for
transversal speed. The first field shows transversal speed in the bow and the second field shows
transversal speed in the stern of the ship. If no docking-log calculation takes place, only the
first transversal field is used, indicating transversal transducer speed.
PSALL: This is a propriety message containing the docking-log information. The VDVBW
message is transmitted simultaneously, with only the first transversal field used indicating
transducer speed.
PSALL/VBW STER: The PSALL message and the VDVBW message are both transmitted.
The PSALL message containing the docking-log information, and the VDVBW message, using
the first transversal field for transducer speed and the second transversal field for speed in the
stern.
S6, VBW format
S6 VBW FORMAT
EXTENDED
IEC 61162-1 edition 2 adds docking-log information fields to the VDVBW message for stern
transversal speed. Some older listeners might not support those new fields in the message.
Setting this menu to SHORT, forces the Sig. Distributor to output the VDVBW message in the
shorter format without stern transversal speed.
Note if SHORT version of the VDVBW message is used menu S5 must be set to PSALL for
the docking-log info to be transmitted to the listeners, e.g. NWW-85 Docking Display.
S7, TX delay
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