Appendix 3: VDRPARAMS.INI File, Rev. 1.2
VDR-100G3/G3S Installation Manual 18/01/2009
7
A3.7 NMEA Parameters
Parameter Typical
Value
Remarks
transferRate 1000 500 to 1000 ms; default is 1000
blocks 60 number of capture intervals per file
TimeSourcePort 3 port that time signal is on, 3=UDP;
1 or 2 =serial port
timeString “ZDA” PC, ZDA, GGA, GLL, RMC
timeMuxID 12 NMEA module channel ID – used for
time synchronization and GPS Error.
EnableAISParsing 0 1=no AIS data to FRM; default is 0
AISLocation 3 1=COM1; 2=COM2; 3=UDP; default is 3
AISMuxID 11 NMEA module channel ID where AIS
data is located; only read if AISLocation
is 3.
recordDuringPowerFail 0 To record Video during a power fail,
set to 1; default is 0
NumNMEAModules 0
Number of NMEA modules connected.
Default value is 0, Maximum value is 9.
NMEAModule1IDStart 0
NMEA Module Channel ID of the first
channel, for NMEA Module 1; i.e. 11
NMEAModule2IDStart 0
NMEA Module Channel ID of the first
channel, for NMEA Module 2; i.e. 22
NMEAModule3IDStart 0
NMEA Module Channel ID of the first
channel, for NMEA Module 3; i.e. 32
NMEAModule4IDStart 0
NMEA Module Channel ID of the first
channel, for NMEA Module 4; i.e. 42
NMEAModule5IDStart 0
NMEA Module Channel ID of the first
channel, for NMEA Module 5; i.e. 52
NMEAModule6IDStart 0
NMEA Module Channel ID of the first
channel, for NMEA Module 6; i.e. 62
Table A3- 7 NMEA Parameters
The VDR-100G3 can synchronize its system clock to an external clock source. The VDR-100G3
is configured so that the clock source has a dedicated input port, in order to minimize any delays
between the generation of the signal and the comparison to the system clock. The port on which
the clock signal is expected is read from the INI file – the TimeSourcePort field. The VDR-100G3
system clock will be compared to the external clock source. If the difference is more than 2.0
seconds, the VDR-100G3 system clock will be set to the external clock source. The NMEA
module channel on which the time source is read is identified by the timeMuxID field of the INI
file. The timeString parameter specifies the NMEA sentence of the external clock source that
provides time information to the VDR-100G3 for time synchronization.
NOTE: If the VDR-100G3 is recording AIS data, there is an option to NOT record the data to the
FRM. When the option to NOT record AIS data to the FRM is chosen, then AIS data will only be
stored to the internal hard drive of the VDR DMM. To NOT record AIS data to the FRM, the
EnableAISParsing parameter must be set to 1.
If EnableAISParsing is set to 1, then the operator must specify the communications port from
which the AIS signal can be read. To do this the operator must specify the port in the
AISLocation of the INI file. Also, if the AISLocation is set to UDP(3), the AISMuxID must
specify the NMEA module channel ID receiving the AIS data.
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