VAL Avionics NAV 2000 Installation Guide download pdf (Page 210)

Autopilot Servo Installation, Configuration, and Calibration

10-16 SkyView System Installation Guide - Revision R

without the wiring becoming warm to the touch. Appendix C: Wiring and Electrical Connections

contains information and suggested resources for wiring and electrical connections. Generally,

20 AWG wire is a suitable gauge for the servo power / ground wires for lengths up to 20’ of

wire.

Wiring Installation

Care should be taken such that aircraft wiring is not subjected to chafing, excessive flexing, or

connections/junctions subjected to excessive vibration which may cause the

connection/junction to fail or short-circuit.

Autopilot Servo Calibration and Test Procedures

There are both ground-based setup and in-flight turning procedures that are

required to fully configure your autopilot installation. Initial servo setup /

calibration / test procedures are covered in this guide. In-flight procedures are

covered in the SkyView Autopilot In-Flight Tuning Guide.

Adjusting autopilot settings while the autopilot is engaged is not recommended, as

some settings changes may cause the autopilot to react immediately and counter

to the pilot’s immediate expectations.

All servos must be properly networked into the SkyView system and IAS tape colors /

v-speeds must be configured prior to any servo calibration, testing, or tuning.

Reference the Network Setup and Status Section for instructions on how to

network the servos into the system and the Airspeed Limitations Section for

instructions on how to set IAS tape colors.

Servo Calibration Procedure

Servo calibration cannot be performed without an SV-ADAHRS-200 installed and

configured in the SkyView system.

The servo calibration procedure identifies the orientation and range of motion of each servo

and must be performed before the servo test procedure. SkyView uses this procedure to

automatically differentiate between the pitch and the roll servos.

To calibrate the servos, enter the Servo Calibration Wizard (SETUP MENU > HARDWARE

CALIBRATION > SERVO CALIBRATION > CALIBRATION) and follow the onscreen instructions to

calibrate the servo(s). If the servo calibration procedure is successful, SkyView will automatically

instruct you to run the servo test procedure.

During SERVO CALIBRATION, SkyView checks the status of the AP Disengage/CWS Button. If

SkyView detects that the button is pressed (the input is grounded) upon entering SERVO

CALIBRATION, the AP Disengage/CWS Button is assumed to be stuck (or incorrectly installed),

resulting in a message is displayed, and the SERVO CALIBRATION is aborted:

The servo disconnect switch appears to be pressed and may be

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VAL Avionics NAV 2000 Installation Guide Page 210