Y2K Compliant (Year 2000) means the receiver operates normally over Dec. 31, 1999 to Jan. 1, 2000 (e.g. all dates are reported properly and all data is correct).

All models have been tested to ensure the Year 2000 leap-year day will be handled correctly, and all models perform properly.

Compliance is based on the firmware version shown. NovAtel recommends updating to the version shown. Please contact NovAtel Customer Support if you have questions regarding firmware versions.

If you have a model not shown on this table or a special firmware version, please contact NovAtel Customer Support.

Receiver Model*

Firmware

1023 Compliant

Y2K Compliant

3011

3.36

Y

Y

3051

3.36

Y

Y

3111

3.36

Y

Y

3151

3.36

Y

Y

RT20

3.36

Y

Y

3711

3.36

Y

Y

3751

3.36

Y

Y

3911

3.36

Y

Y

3951

3.36

Y

Y

RT20-PC

3.36

Y

Y

GISROV

3.36

Y

Y

GISROV

3.431

Y

Y

GISRT20

3.36

Y

Y

GISRT20

3.431

Y

Y

AG20

3.36

Y

Y

DREDGER

3.36

Y

Y

HYDROSRV

3.36

Y

Y

GPSTN

3.431

Y

Y

MILL3151R

4.501

Y

Y

MILLRT20S

4.501

Y

Y

MILLENSTD

4.501

Y

Y

MILLENSTDW

4.501

Y

Y

MILLENRT2

4.501

Y

Y

DL series PDC

1.04

Y

Y

DL series GPS

4.501

Y

Y

BeeLine

7.51

Y

Y

*Includes variations of base models, e.g. 3151RM

For Receivers Out of Production

1023 Compliant (GPS week rollover) means the GPS week will go from 1023 back to 0 with all dates being reported properly, and all data correct.

Y2K Compliant (Year 2000) means the receiver operates normally over Dec. 31, 1999 to Jan. 1, 2000 (e.g. all dates are reported properly and all data is correct).

All models have been tested to ensure the Year 2000 leap-year day will be handled correctly, and all models perform properly.

Compliance is based on the firmware version shown. NovAtel recommends updating to version 2.30 (see below). Please contact NovAtel Customer Support if you have questions regarding firmware versions.

If you have a model not shown on this table or a special firmware version, please contact NovAtel Customer Support.

Receiver Model*

Firmware

1023 Compliant

Y2K Compliant

711

2.21

1, 2, 3

4

751

2.21

1, 2, 3

4

911

2.21

1, 2, 3

4

951

2.21

1, 2, 3

4

951RT

2.30

1, 2

Y

2011

2.21

1, 2, 3

4

2051

2.21

1, 2, 3

4

2111

2.21

1, 2, 3

4

2151

2.21

1, 2, 3

4

2151RT

2.30

1, 2

Y

Item of noncompliance:

1. The week 1023 rollover does not go to 0, but to 1024. This only happens if the card is left on and running through the week rollover time (00:00 Sunday morning Aug. 22, 1999 GMT, which will be noon Saturday Aug. 21, 1999 to noon Sunday Aug. 22, 1999 depending on local time zones / daylight savings). If the card is not powered during this rollover, the week will report properly when powered after the rollover. If the card is running through this period, the card will need to have power cycled in order to restore it to normal operation.
2. During the 1023 week rollover, there is a significant jump in position (several meters). This error will stay in the position solution until the power to the card is cycled. If the card is not powered during this rollover, the position will report properly when powered after the rollover. If the card is running through this period, the card will need to have power cycled in order to restore it to normal operation.
3. Starting mid week 1023 (roughly Wednesday, Aug. 18, 1999), the GPS satellites will start broadcasting a new almanac for week 0. This will last until the end of week 0 (noon Saturday Aug. 28, 1999 to noon Sunday Aug. 29, 1999 depending on local time zones / daylight savings). During this time, the receiver will be able to track satellites when it is first powered on, but will have difficulty tracking new satellites that come up over the horizon. This means a receiver left on for more than a few hours will likely 'run out' of satellites.
4. After the 1999 to 2000 rollover, the NMEA GPZDA log (which reports a date like 12/31/1997) reports a date which is not accurate. The card does not report a correct date in this log from Jan. 1, 2000 onwards. However, the GPS week and seconds of week continue to report correctly, subject to item 1 above.

Due to the number of difficulties to be encountered with firmware versions 2.21 and older, an upgrade to firmware 2.30 is HIGHLY RECOMMENDED. The upgrade for receiver models 7xx and 9xx, will be to the highest performance 951RT model, and can be done remotely by the user. Receiver models 20xx and 21xx will be upgraded to the highest performance 2151RT model, but must be returned to the factory for upgrading. Please contact NovAtel for upgrades and have the receiver serial numbers ready.

Technical Papers - GPS Week Rollover and Year 2000 Compliance

Vehicle Tracking GPS • GPS Antenna • Marine GPS