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6 August 2014

Notice : GPS Week Number Rollover

To JRC Global Positioning System (GPS) users:

Thank you for using our products.

We would like to announce that GPS week number rollover is to occur on some of our GPS' on 17th August 2014.

The week number counter in GPS resets once every 1023 weeks, which is approximately 19.6 years. The week number counters for the GPS in the discontinued models below started their week count from the 1st January 1995. It is on the 17th August 2014 at 0:00 AM (UTC) that the week number counters rollover will occur.

The subject models are designed not to turn the clock back 19.6 years, and will continue to work correctly under normal use.

However, please note that time and date will go back to the starting date above when a master-reset of equipment or a battery replacement is carried out. In this case, customers are required to configure the initial settings.

Equipment Models Subject Serial No. Note
GPS Navigators JLR-4110MK2 Up to KC57185 Navigators affected by the rollover in 2008, where a ROM was replaced in receiver*
JLR-4110MkII Initial setting procedure
JLR-6800 Initial setting procedure
JLR-6800 Up to KD40400
JLR-4110MK2 KC57186 and later JLR-4110MkII Initial setting procedure
JLR-6800 KD40401 and later JLR-6800 Initial setting procedure
JLR-7700 All JLR-7700 Initial setting procedure
GPS receiver JLR-4320 / 4321 All NWZ-4551 / J-NAV500 Initial setting procedure
NWU-800 Initial settings procedure

*If the GPS receiver converting kit was attached for the rollover in 2008, next rollover will be 8th September 2024.

Other GPS equipments are NOT subjected to this rollover in 2014.

For more information, and countermeasures, please contact our service agents or sales representatives.

Contact

Marine Electronics Business Department (Japan)

Tel: +81-3-6832-1807 / Fax: +81-3-6832-1845

Amsterdam Branch Office

Cessnalaan 40-42, 1119 NL, Schiphol-Rijk, The Netherlands
Phone: +31-20-658-0750 / Fax: +31-20-658-0755

Seattle Branch Office

1011 SW Klickitat Way, Suite 201B, Seattle, WA 98134, U.S.A
Phone: +1-206-654-5644 / Fax: +1-206-654-7030

E-mail for general inquiries

For further information: please contact

Japan Radio Co.,Ltd.

Marine Electronics Business Department (Japan)
Tel: +81-3-6832-1807 / Fax: +81-3-6832-1845

Amsterdam Branch Office

Cessnalaan 40-42, 1119 NL, Schiphol-Rijk, The Netherlands
Phone: +31-20-658-0750 / Fax: +31-20-658-0755

Seattle Branch Office

1011 SW Klickitat Way, Suite 201B, Seattle, WA 98134, U.S.A
Phone: +1-206-654-5644 / Fax: +1-206-654-7030