JRC JLN-900 - Distance and Trip Counters; Lamp Test; Illumination of Push Buttons

7-5
When trip value is presented and the Reset Trip button is pressed for 2 seconds the
displayed trip distance value will be reset to zero.
3.2 Distance and trip counters
8 counters are used for distance run information.
DIST
WAT
Total Distance through WATer (resulting).
Note: if no transverse speed information is available, this distance
is counted as if transverse speed is 0.00 kn.
TRIP
WAT
Trip Distance through WATer (resulting), resettable.
Note: if no transverse speed information is available, this distance
is counted as if transverse speed is 0.00 kn.
TRIP
WAT-L
Trip Distance through WATer -Longitudinal, resettable.
This trip is not incremented (as default) when speed is astern.
TRIP
WAT-T
Trip Distance through WATer -Transverse, resettable.
Transverse speed to Port decreases counter value as well as alters
sign when passing zero from SB to P and vice versa.
DIST
GND
Total Distance over GrouND (resulting).
Note: if no transverse speed information is available, this distance
is counted as if transverse speed is 0.00 kn.
TRIP
GND -L
Trip Distance over GrouND -Longitudinal, resettable.
This distance is not incremented (as default) when speed is astern.
TRIP
GND -T
Trip Distance over GrouND -Transverse, resettable.
Transverse speed to Port decreases counter value as well as alters
sign when passing zero from SB to P and vice versa.
TRIP
GND
Trip Distance over GrouND (resulting), resettable.
Note: if no transverse speed information is available, this distance
is counted as if transverse speed is 0.00 kn.
When $VDVLW message containing distance information is received from the speed
log system the total resulting distance counter(s) in the Display will be synchronised
with the Total resulting distance counter(s) in the speed log and thus will show the
same value(s) in all connected Displays.
The Trip counter(s) will not be synchronised with the $VDVLW message and
therefore always locally calculated in the Display.
Total counters can present a maximum value of 99999.9 NM.
Trip counters can present a maximum value of 9999.99 NM.
At maximum value individual counters will roll-over and commence from 0.00 NM.
All distance counters locally in the Display will be stored in a non-volatile E2PROM in
case of a power failure/loss or intentionally powered off.
3.3 Lamp test
By pressing both buttons simultaneously during normal operation the Display
will lit all segments and LED indicators to confirm functionality.
3.4 Illumination of push buttons
“EL” (ElectroLuminiscent) backlight of the membrane switches is integrated in the
panel foil. The EL lamp has an estimated lifetime of 20,000 hours, which means that
we could guarantee functionality for only 2.3 years if the EL lamp was active