Sperry Marine NAVIKNOT 600 SD, Руководство по эксплуатации, установке и обслуживанию

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NAVIKNOT 600 SD 056353/J
Doppler Transducer Calibration 7-9
One Way Trial Run
Note In a one way trial run, any drift due to wind and/or current will adversely
affect the calibration. Conducting a one way trial run in the presence of
drift, may degrade instead of improve the speed accuracy.
To carry out a one way trial run:
1. Bring the vessel on the required course for the approach to the run.
2. Approach the run with the speed (engine rev.s) at which the calibra-
tion is to be carried out. Keep the heading and speed steady.
3. Go to page 2 of the Service Setup and select the Calibration | One
Way Trial Run sub-menu.
The run clock is shown, indicating 00:00 s run time and the uncali-
brated water speed as received from the preamplifier D.
4. Exactly at the start of the
run (first landmark athwart-
ships or “start” announced
by supervisor), press
ENTER
to start the run clock.
5. Exactly at the end of the
run (second landmark
athwartships or “stop”
announced by supervisor),
press
ENTER
to stop the run
clock.
The display now indicates the run distance, the average uncalibrated
speed for the run, the true speed over ground (calculated from the
run time and distance) and the calculated calibration value.
6. Press
ENTER
to store the run parameters.
The One Way Trial Run sub-menu is quit automatically.
As the result of the trial run, one new entry will now be found in the cali-
bration table, holding the average uncalibrated speed and the calculated
true speeds for the run.
SERVICE SETUP Page 2
CALIBRATION
ONE WAY TRIALRUN
00:00
20.2
TIME
SPEED S
KN
00:02:30
20.2
TIME
SPEED S
KN
01.000
20.2
20.0
-0.2
DISTANCE
UNCAL SPEED
TRUE SPEED
CAL VALUE NM
KN
KN