Rate Err Display; Output Display - Furuno Satellite Compass SC-50/110 Service Manual

5) RATE ERR display

This menu sets the level to trigger the heading error alarms; NO HEADING OUTPUT and
RATE ERROR. The system compares the output of the angular rate sensor with one obtained
by the GPS signal. In the following example, an error is detected when the difference is 2.0º or
more. An alarm is generated according to SHIFT CONT setting. In the example below, an
alarm is generated when Roll sensor has four consecutive errors.
YAW LIMIT: Used to detect Yaw output error. Successive two yaw data (GPS + Rate sensor)
is compared. In the example below, an alarm is generated when the difference is 1.00º or
more.
Yaw data error
alarm level
When the rate sensor error appears after the installation, first check that the rate sensor is
mounted and the installation menu is set correctly. If yes, increase the SHIFT CNT only 1.
For example, if RATE ERROR! (YAW) is displayed, change SHIFT CNT YAW from 0 to 1.
Never change the setting of WA SHIFT and YAW LIMIT.

6) OUTPUT display

DO NOT change the setting in this menu, except for HDM. R&D engineers use this menu
for investigation. HDM is changed to TRUE if necessary.
RATE ERR
WA SHIFT YAW : 2.0º
WA SHIFT ROL : 2.0º
WA SHIFT PIT : 2.0º
YAW LIMIT : 1.00º
SHIFT CNT YAW : 0
SHIFT CNT ROL : 3
SHIFT CNT PIT : 3
Fig. 8 Rate error display
OUTPUT
M2 DATA
GPS DATA : OFF
LOG SENTENCE?
HDM : MAG
WAAS
PITCH ROLL : ABSOLUTE
5
: OFF
: OFF
Threshold level for
rate sensor error
Number of consecutive
errors (For example, an
error message appears
with three consecutive
ROL errors.)
Fig. 9