Section 4 unit parameter definitions, 1 art2000 and art2100 parameters, 1 gyro source – BendixKing KPA 900 System RDR-2000 User Manual
Page 43: 2 analog gyro type, 3 analog gyro compensation, 4 mechanical scan limit (art2100 only), 5 connector position, 6 altitude source (art2100 only)
BENDIX/KING®
KPA 900
Page 4-1
Revision 2
©Honeywell International Inc. Do not print without express permission of Honeywell.
Dec/2007
SECTION 4
UNIT PARAMETER DEFINITIONS
4.1 ART 2000 AND ART 2100 PARAMETERS
4.1.1 GYRO SOURCE
The Gyro Source parameter shows the two potential sources for the gyro data. When the
429 Bus option is selected, the Analog Gyro Type and the Gyro Compensation options
are ignored and do not affect the ART.
4.1.2 ANALOG GYRO TYPE
The Analog Gyro Type indicates the value of the reference voltage from the gyro.
Selection of the Unknown option causes the calibration to take longer. The calibration
does not have optimum resolution when this option is selected.
4.1.3 ANALOG GYRO COMPENSATION
The reference voltage for some analog gyros decreases in operation. The decreased
voltage is more noticeable under heavier loads. When the voltage decreases, the pitch
and roll gain values are too high. Select the Compensate For Droop option to set the gain
values in ratio of the initial reference voltage to the current reference voltage.
4.1.4 MECHANICAL SCAN LIMIT (ART 2100 ONLY)
The mechanical scan for the ART 2100 may be limited to 100 degrees to accommodate
installations where space limitations under the radome cause interference with the
antenna movement. The stop screw in the segmented gear must be moved to the
appropriate position. Hard-start calibration must be done when the mechanical scan limit
is changed.
4.1.5 CONNECTOR POSITION
The Connector Position is the orientation of the 50-pin unit connector on the ART. The
ART is mounted with the connector at the 12 o'clock position (top) or the 6 o'clock position
(bottom). When the correct connector position is set, the ART to moves the antenna in the
correct vertical axis with the tilt knob. This gives the correct left/right scan position
information.
4.1.6 ALTITUDE SOURCE (ART 2100 ONLY)
The Altitude Source parameter shows the two potential sources for the altitude data for
the autotilt feature. The choices are the ARINC 429 bus or the discrete bits from the
Gilham (ARINC 575) bus. Selection of the ARINC 429 option limits the system to two
controller inputs.