SKIPPER
Electronics AS
EML224N Operation and Installation Manual
Edition: 2020-02-05
Chapter: Terminology
Page 6 of 64
Terminology
Units
Unless otherwise stated, all values shown on the display are as follows:
Distance
Nautical miles (nm)
Speed
Nautical miles per hour (kn)
Pulse indication
Pulses per nautical mile (p/nm)
Temperature
Degrees Celsius (
o
C)
Abbreviations
In addition, the following symbols are used on the runtime screens:
Com
Serial communication. Com1 (NMEA), Com2
(NMEA), Com sensor (Signal to/from sensor)
Kn
Speed in knots
NMEA
NMEA-0183 communication standard with external
equipment
WT
Water track, Speed through water STW
STW
Speed through water
TRIP
Text for trip/total
T
Text for TEMPerature
V
Voltage
In menu / setup screens, the following abbreviations are used:
STWWL
Speed through water – water track – longitudinal
value
STWWT
Speed through water – water track – transversal
value
PULSE
Pulse settings
Average drift
o
Angular offset in degrees (
o
)
Outgoing NMEA messages follows:
Messages starting with VM are from Electromagnetic log.
Messages starting with VD are from Doppler log.
VMVLW / VDVLW
$VMVLW,.…,Trip and total
VMMTW / VDMTW
$VMMTW,…,Water temperature
VMVHW / VDVHW
$VMVHW,…,Relative speed through water
VMVBW / VDVBW
$VMVBW,....,Multiple speed
