Memorex RX 1 Smart Installationshandbuch PDF herunterladen (Seite 39)

38 | Simrad MX500

tion. This provides you the capability of knowing the wind

source exactly.

This screen is divided into four windows. The window on

the top left provides details relating to the True Wind

Angle (TWA), True Wind Speed (TWS) and True Wind

Direction (TWD), which are taken from the NMEA 0183

record of MWV or VWR. If the wind information is given

in relative terms, the CDU calculates true values using

available GPS course and speed information to make the

necessary adjustments. Refer to the Glossary for defini-

tions on Apparent/True Wind Angle/Speed/Direction. To

the right of the wind information is your Velocity Made

Good (VMG) towards the waypoint. The VMG data is fil-

tered to show the average speed from the last waypoint

to your present position towards the next waypoint. VMG

is calculated from GPS data. The CDU will also use the

above data to calculate your speed parallel to wind and

can output the VPW NMEA 0183 data sentence to other

on-board instruments.

The window below the wind data provides information re-

lating to your course and speed. You will find the Course

Over Ground (COG calculated by the MX421 smart GPS

antenna), Heading (HDG, your NMEA 0183 compass in-

put), and Heading To Steer (HTS) data on the left side of

the window. HTS data is calculated by considering your

Heading, minus COG and adding BRG to the waypoint. In

doing so, the software considers any Set to be included

in the HDG value. If there is no Set, your HDG should be

equal to COG. Set and Drift is calculated from GPS and

your Speed Log (NMEA 0183 VHW record or Pulse input)

and Compass (NMEA 0183 HDM, HDT, or VHW) input or

an operator manual input.

1 2 ... 34 35 36 37 38 39 40 41 42 43 44 ... 261 262

Keine Kommentare

Memorex RX 1 Smart Installationshandbuch Seite 39