Furuno FAR-2107 Series Service Manual page 15

Changes to be made on Ver. 2.22 SPU
The eliminated problems are;
1) Keyboard locks up when the route (in RTE sentence) contains 31 or more waypoints,
including own ship's number (00).
Note: Maximum 30 waypoints can be processed as one route in FAR2xx7 radar.
When connecting to GP-90 for external route navigation, the number of waypoint
should be 29 or less for one route.
2) Own ship's vector is not updated when COURSE vector is selected through
[MENU]-9-7-6, while the radar is operating in cross mode in Interswitch function.
3) After CU/RESET operation in CU-Off center mode, the plotter display does not
overlay the radar picture exactly.
4) REVERSE selection of wheel drive through [MENU]-9-7-2 is not backed up when
power is removed.
5) Range ring and Heading line is presented by dot line when Gyro Error is generated.
6) Setting of AUTO STC (STC level) is not restored when PM or SART operation is
turned off.
Changes to be made on Ver. 1.03 DRAW FPAG (0005 in selftest screen)
Following bugs are fixed.
1) The third color bar from the top in the factory test display is displayed in different color.
2) The 12th color of echo trail is presented by darker color.
Changes to be made on Ver. 1.20 RFC
Following bugs are fixed.
1) Tuning search is performed when the pulselength is changed.
2) Check sum is added to the data from the RFC to the SPU.
3) The RFC setups MIC tuning voltage every five seconds.
4) TUNE IND voltage less than 50 % of maximum level is ignored during Tune Tracking
function.
5) RF error due to check sum does not appear even if RFC 1.20 or newer is used with
older version of SPU 2.14 or older. Tentative versions SPU 2.17 gives RF error if the
RFC ver 1.10 or older is connected.
Changes to be made on Ver. 01.22 RFC
Following bugs are fixed.
1) Small search of Auto tuning is activated when the sector blanking area, resulting in the
burred echo. This happens with Ver.2.20 SPU and Ver.2.20 RFC.
2) Gain and STC control is disabled when the mode is changed to STBY, then to TX
within six seconds.
2/4