JRC ALPHAMIDICOURSE Mk2, Installation And Operation Manual

Page: 34 / 99

34 | Installation Instructions
1.7.2 Configuring the Gyro sphere
Each Sensitive element is tuned to its Master Compass before it is shipped from the factory. This tuning is reflected in a
set of parameters specific for this gyrocompass. These parameters are included in the sensitive elements package on
the Gyro sphere settings form. This parameter have to be entered into the Control Unit as part of the gyro compass
installation procedure. See below example form of AlphaMidiCourse gyrocompass with serial 10008.
The parameters are loaded into the Control Unit from the Extension menu as described below.
1) Enter the Extension menu by pressing and
holding the SET button and the ACK/ENT
buttons simultaneously for approx. 3 sec.
Main category A-1 will be displayed.
2) Press the SET button to enter the sub-
category loop. Sub-category 1.1.U and its
parameter value will be displayed.
3) Use
▲
or
▼ to increase or decrease the
parameter value until the value is according to
the value of the form.
4) Confirm the entry by pressing ACK/ENT
button and the display will return to the sub-
category.
5) Press DISP button again until you see 1.4.u .
Repeat step 3 and 4.
6) Do the same for sub-category 1.6.t.
7) Press the SET button again to return to main
category A-1 and then press the DISP button
to go to A-2 main category.
8) Press SET button and enter the value for
2.3.h , 2.5.y (year), 2.6.N (month and day),
2.7.t (hour and minute) and 2.8.d (total days
of operation. This value should be reset after
installation).
After step 8 is done return to the main category by pressing
SET button and then exit the Extension menu by
pressing and holding the SET and ACK/ENT buttons simultaneously for approx. 3 seconds.
For more information about the Extension menu, see paragraph 1.8
Advanced Settings .
Note Values 1.1.U (Damping gain) and 1.6.t Theta offset are written on the Gyro sphere.
1.7.3 Setting the Latitude input source
When paragraph 1.7.2
Configuring the Gyro Spere has been carried out the latitude input source can be changed as
described below.
1) Press the DISP button until the display shows latitude value.
2) Press SET button once and its upper line in the display starts flashing.
3) Use the
▲
or
▼ buttons for selecting
GYro or GnSS as latitude input
source. Confirm the entry with ACK/ENT button.
- When GYro is selected the display will change to flashing
numbers. Use the ▲
or
▼ button to set the latitude manually and
press ACK/ENT .
- When GnSS is selected the display will show the latitude value
from GPS.
4) The display will return to show latitude value without flashing.
OR