Track Mode Errors; Operational Troubleshooting Tips - RESEARCH CONCEPTS RC2000C Manual

Az/el tracking antenna controller

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Table of Contents

RC2000C Az/El Tracking Antenna Controller

Should one of the following errors occur during TRACK Mode operation, the ERROR sub-mode will

activate. The error message will be displayed to the right of the ERROR banner on the second row on

the display. All tracking operations will cease until the error is corrected.

JAMMED

This error will occur if the controller does not sense feedback from the azimuth or elevation

position sensor when the antenna is commanded to move from TRACK mode. This error will

typically be accompanied by the ANT AZIM or ANT ELEV JAMMED system error described in

section 7.1.

LIMIT

The controller encountered an azimuth or elevation limit during a track movement operation.

This represents a serious error because it means the limits have to be changed to allow

tracking of this satellite. The AZIM CW or ELEV UP limit can sometimes be changed without

invalidating all satellite position data. Please refer to the appendix entitled 'Restoring Non-

Volatile Memory' for more information.

DRIVE

This error will occur if the ANT AZIM or ANT ELEV system errors occur. Please see section 7.1

for more information on these system errors.

PEAK LIMIT

This error indicates that the antenna moved too far in either azimuth or elevation while the

controller was attempting to peak the antenna. This error is described in section 4.4.5 -

Tracking Problems.

SCALE FACTOR

This error indicates that the controller was unable to calculate the antenna azimuth scale factor.

This error will only occur if the user has specified that the antenna azimuth scale factors are to

be calculated by the controller (by setting the Azim Constant CONFIG mode item to zero). To

calculate the azimuth scale factor, the controller requires that 2 geostationary satellites with

sufficient spacing be programmed into memory. If this error occurs, the user either needs to

program additional geostationary satellites into the controller's non-volatile memory via SETUP

mode or initialize the Azim Constant CONFIG mode item. See sections 4.3.2, 4.4.2, and

5.10.10.

SYSTEM

System errors were summarized in section 7.1.

CHECKSUM

This error indicates the memory in the satellite's track table or header has been corrupted. The

only way to correct this error is to re-initialize the satellite using SETUP mode. See section 5.6

THE CONTROLLER DOES NOT RETURN TO THE PROPER SATELLITE LOCATION (AND IS NOT

EVEN CLOSE)

When this occurs the controller is generally losing or gaining position counts for a given axis as

the antenna moves about that axis. Please review the items mentioned in Section 3.2 -

Azimuth and Elevation Position Sense.

If the cause of the problem is not found and only one axis is affected, consider replacing the

position sense module and/or magnets in the actuator. If both axis are affected the motor drive

wires may have to be shielded. This is seldom necessary, but if it is, follow the rules for

connecting the shields as outlined in Section 3.2.

THE CONTROLLER RETURNS TO APPROXIMATELY THE CORRECT POSITION BUT MUST BE

PEAKED MANUALLY TO ACHIEVE A GOOD SIGNAL

Research Concepts, Inc. • 9501 Dice Lane • Lenexa, Kansas • 66215 • USA

7.2