JRC ALPHAMIDICOURSE Mk2, Installation And Operation Manual

Page: 38 / 99

38 | Installation Instructions
1.8.1 Extension Menu overview
Main
Category
Sub
Category
Parameter/description Default
value
Range
A-1 1.1.U Damping gain ratio (%) 1.00 0.00
– 2.00
Determines the damping (damping operation in north- seeking
motion = half cycle attenuation) and actually represents a
coefficient (ratio) to the standard value stored in the software.
1.2.F Bearing servo gain ratio(%) 1.00 0.00
– 2.00
Determines the gain
of the bearing servo loop where phi Φ
signal (deviation signal around rotor’s vertical axis) is
calculated, drives the azimuth step motor and has the sensitive
element follow to the gyro-sphere vertical axis (around azimuth
axis) rotation. Presents a coefficient (ratio) to the standard
value stored in software.
1.3.S Horizontal servo gain ratio(%) 1.00 0.00
– 2.00
Determines the gain of the horizontal servo loop where theta θ
signal (rotor tilting angle signal) is calculated, drives the
horizontal DST and has the sensitive element follow to the gyro
sphere tilting angle (rotor tilting angle). Present a coefficient
(ration) to the standard value stored in software.
1.4.u Leveling servo gain ratio(%) 1.00 0.00
– 2.00
Leveling motion (sensitive element erection motion) calculates
X signal (equivalent inclination angle) which is output from the
sensitive element and relative inclination angle signal from
HRZC board, controls to have the sensitive element keep
horizontal. The value determines this control loop gain.
Presents a coefficient (ratio) to the standard value stored in the
software.