Simrad SAL R1a Easy Tank - 5.2 Possible Faults and Actions; 1. Wrong Speed Indication; 2. Locked on Constant Speed; 3. Delayed Speed at Acceleration;Retardation

SAL R1a Easy Tank User Manual No. 703852
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5.2 Possible faults and actions
1. R1a indicates wrong speed
2. R1a has locked on constant speed
Reason
Action
The WTU is in test mode.
Enter the WTU T-menu and leave that
mode by pressing Menu and Enter
simultaneously two times and then ESC
two Esc three times.
3. R1a indicates a delayed speed at accelerations and retardation
Reason
Action
Too high averaging time constant or
wrong speed limit between constants.
Change averaging time constant or speed
limit between constants.
See User Guide 3.9 Averaging Speed
Constants
4. R1a indicates an oscillating speed around correct value
Reason
Action
Too low averaging time constant or
wrong speed limit between constants.
Change averaging time constant or speed
limit between constants.
See User Guide 3.9 Averaging Speed
Constants
5. Some of connected displays/users indicate wrong speed or no speed at all
Reason
Action
At any of reasons below in this table.
Change to simulated speed as described
below.
Bad contact between ELC / NMEA
Unit(s) (LPU2) and display / user.
Check terminations in ELC / NMEA
Unit(s) (LPU2) and display / user. Check
cables.
Only serial (NMEA) displays not
working. Serial output not working in
ELC / NMEA Unit(s) (LPU2).
Measure serial (NMEA) signal in ELC /
NMEA Unit(s) (LPU2) as described
below.
Reason
Action
The TRU is not aligned longitudinal
Check the TRU according to TRU
Mounting Inspection described below
The log is set to wrong speed calibration
(WTU-menu C1, C3).
Change calibration alternative.
See User Guide 3.8 Calibration
The log is set to wrong TRU calibration
(WTU-menu C4).
Check TRU calibration.
See User Guide 3.8 Calibration
The speed calibration is not relevant to
present conditions.
Make a new log calibration.
See User Guide 3.8 Calibration