12-4
4 Test procedure for SOG
Refer to and note in protocol on page 12-10!
Prior to power-up of the Sig.Processor:
x Verify serial number and revision of the JLN-900 Speed Log Sig.Processor unit.
x Verify serial numbers and revisions of the PCBs T2M, T2F and T2R.
x Verify MAIN PRIMARY transformer plug to be connected according to ship’s
power supply, 230VAC or 100 / 115VAC
x Verify BACKUP PRIMARY transformer plug to be connected accordingly if the
Sig.Processor is equipped with two transformers, 230VAC or 100 / 115VAC. For
JLN-900.
x Check mains supply voltage and, if applicable, the backup supply.
x Check mains supply frequency and, if applicable, the backup supply.
x Temporarily connect a PC/LapTop to the NMEA output, terminals 108(A)/109(B)
and initiate a terminal emulating program to monitor NMEA messages.
Power-up the Sig.Processor:
x Connect mains supply voltage and within a few seconds observe as below. Repeat if
needed.
x Monitor the serial messages from the T2R-pcb during the start-up sequence and
verify the SW version appearing as ‘VDTXT……..SALT Rev 702275??......’
x If the Sig.Processor is equipped with two transformers also connect backup power
supply.
x Check T2F regulated voltages and note in protocol.
x Again power-off mains (and backup) supply and proceed as below.
5 Test procedure for STW
Refer to and note in protocol on page 12-9!
Prior to power-up of the Sig.Processor:
x Verify the serial number of the WATER TRACK U unit.
Power-up the Sig.Processor:
x Connect mains (and backup) supply voltage.
x From here go to the wheelhouse and use the Speed Log Master Display to access the
menu system of the WATER TRACK U. Sig.Distributor must also be powered, see
below.
x Verify the SW version in Menu M6, using the Master Display.
x Test the EEPROM by setting a new value in the speed simulation menu T1.1, press
Enter and wait for "SAVE OK" and observe the new test speed on the Master
Display. Return to default value, 8.00KN, press Enter and wait for "SAVE OK".
x Exit Simulation mode and Menu mode and return to normal operation.
x The STW log will start its ``scanning´´ sequence to search for a valid speed.
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