Switching On The Std 22 Compass - Raytheon Standard 22 Compact Operator's Manual

2.1

Switching on the STD 22 Compass

The compass goes into operation when the power supply is switched on from the ship's
mains.
The compass goes into the heating stage for the first 30 minutes (this period will vary
depending on the temperature of the supporting liquid) and the letter "h" is displayed as
the leading sign on the digital display. The follow-up system is switched off -- no heading
can be output.
When the temperature of the supporting liquid reaches 45 C the follow-up system
switches on automatically, and the heading is displayed on the compass; however
deviation from actual heading may still be considerable.
This settling phase (indicated by an additional dot on the digital display) ends 4 hours
after switching on. Accuracy is now < 2
After about five hours (from switching on) the compass shows an accurate heading (see
Technical Data, section 1.3.3).
The "Quick Settling" option reduces the settling in phase to one hour. With it, precision
(after one hour) is better than +/--3.
The "Quick Settling function can be performed either with an Operator Unit, type
130--606 or via a Distribution Unit with an Operator Unit, type 130--626.
Edition: February 2015
Operator Manual
Compass Standard 22
and
Standard 22 Compact
No NMEA Heading and NMEA RoT is displayed (output)
during the settling stage.
The Quick Settling function can only be used if the ship's
heading has not been changed between switching off and
switching back on.
The Quick Settling function can not be used:
-- During the first setting up (installation).
-- If the ship's position was changed between
switching off and on again of the compass.
-- If the temperature of the gyro supporting liquid is
more than 30C.
.
17
Compass
Standard 22
4102.DOC010102