MOUNT SPECIFIC DATA For Superior 4.5 m Fixed Base Antenna

MOUNT SPECIFIC DATA For Superior 4.5 m Fixed Base Antenna
RC3000 Antenna Controller
Appendix B - Mount Specific Data
B- 1
APPENDIX B - MOUNT SPECIFIC DATA
For
Superior 4.5 m Fixed Base Antenna
This appendix describes RC3000 operations unique for the Superior 4.5 m. fixed-based mount equipped
with resolvers. Differences between this version and the operation described in the “baseline” RC3000
manual are noted on a paragraph by paragraph basis.
REVISION HISTORY
30 January 2008, Software Version 1.59
1.1 Manual Organization
This appendix is provided as a supplement to the baseline RC3000 manual. The corresponding
paragraphs in the baseline RC3000 manual are referred to when data specific to the Superior 4.5 m.
mount with resolvers are described.
1.2 RC3000 Features
All basic features of the RC3000 are utilized to provide the operations for this mount. Some features
have been modified (as described below) to customize operations for this antenna.
Hardware Configuration. A RC3000A version of hardware is utilized for this mount.
Software Configuration. The mount model will be designated as M2. Software will be designated as
RC3K-M2-abcd.
1.3.2 System Interface Requirements
The M2 interface differs from baseline RC3000 interface requirements as follows:
1) No stow limit switch feedback is provided from the azimuth or elevation axes
2) Resolvers present on the azimuth and elevation axes
3) No Inclinometer
1.3.4 Antenna Pointing Solution
The baseline RC3000 is mechanized for operations of a mobile satellite antenna. Whenever the antenna
is relocated, the RC3000 determines the antenna's new latitude, longitude and estimated heading.
The M2 mount is considered a "Fixed Base" antenna in that it will typically be installed in one location for
extended periods of time. Slight differences in the installation and operation of the RC3000 are made to
better accommodate operations of a fixed base antenna. These differences will be highlighted in
following paragraphs of this appendix.
With respect to the antenna pointing solution, the latitude and longitude of a fixed base antenna only
needs to be entered once. Once entered, this lat/lon will remain (not dynamically updated as with a
mobile mount.) Also the heading reference for a fixed base antenna will be considered 180 (True South)
when the antenna is in the Northern Hemisphere and 0 (True North) when the antenna is operating in the
Southern Hemisphere.
RC3000 Antenna Controller
Appendix B - Mount Specific Data
B- 2
1.3.5 Timekeeping
When the RC3000 is used for a mobile antenna, the internal real time clock is updated every time the
antenna's lat/lon is obtained from the GPS. This will typically not be the case for a fixed base antenna so
the user should be aware to periodically (perhaps monthly) adjust the clock.
1.3.7 Drive System
Jam and Runaway Sensing. Jammed and runaway sensing is based on resolver counts.
RC3000 Antenna Controller
Appendix B - Mount Specific Data
B- 3
2.0 INSTALLATION
2.2 Electrical Connections
Example schematics for the electrical connections between the RC3000 and the M2 mount are shown in
section 4.2.
The following subparagraphs describe any unique items with respect to the M2 system.
2.2.2 Motor Drive. No polarization axis drive.
2.2.3 Drive Sense.
2.2.4 Limit Switches. The limit switch inputs are internally jumpered within the RC3000 since no limit
switches on the mount are supplied to the controller.
2.2.5 Signal Strength. AGC channel 1 is to be wired to the Tracking Receiver as shown in this section
of the baseline manual.
2.2.6 Navigation Sensors. No GPS receiver or Fluxgate Compass will typically be used with the M2
mount.
2.2.7 Accessories. Outputs from this connector are available as described in the baseline manual.
2.2.8 RF Autopeak. This input is available but it is intended that only the signal strength indication from
the tracking receiver via AGC channel 1 will be used.
2.2.9 Hand Held Remote. This option is available.
2.2.11 PC Remote Control. The remote control interface is wired as shown in the baseline manual.
2.2.12 Waveguide Switch. The optional waveguide switch module is not provided.
2.3 Initial Configuration, 2.4 Final Calibration
Setup and calibration of the M2 mount is somewhat unique compared to that described in the baseline
manual for a vehicle mounted antenna.
2.3.2 Elevation Calibration
The first elevation calibration step should be performed from the 0 degree look angle position. From
Manual Mode, jog the antenna until the reference position is achieved.
Elevation Resolver Reference. Rotate the elevation resolver until a raw resolver angle of approximately
180 degrees is obtained. Lock the resolver and note the raw resolver angle. Calculate the correct
resolver offset to obtain the look angle of 45 degrees and enter it as the elevation_resolver_offset (refer
to step 3b in baseline manual)
Elevation UP limit. Move the elevation axis up to within a short distance of its physical limit. Note the
elevation resolver count (from the MANUAL mode) and enter this as the UP limit in the ELEVATION
PULSE DRIVE configuration screen. An elevation resolver count greater than this value will thereafter
generate an elevation UP limit.
Elevation DOWN limit. Move the elevation axis down to within a short distance of its physical limit. Note
the elevation resolver count (from the MANUAL mode) and enter this as the DOWN limit in the
ELEVATION PULSE DRIVE configuration screen. An elevation resolver count less than this value will
thereafter generate an elevation DOWN limit.
RC3000 Antenna Controller
Appendix B - Mount Specific Data
B- 4
2.3.3 Azimuth Calibration
The first azimuth calibration step should be performed from the azimuth center of travel position. If
possible, this position should be close to true South in the Northern Hemisphere or true North in the
Southern Hemisphere. From Manual Mode, jog the antenna until the azimuth is as close to this position
as possible.
Azimuth Resolver Reference. Rotate the azimuth resolver until a raw resolver angle of approximately
180 degrees is obtained. Lock the resolver and note the raw resolver angle. Calculate the correct
resolver offset to obtain an angle of 0.0 degrees and enter it as the elevation_resolver_offset (refer to
step 3b in baseline manual)
Azimuth CW limit. Move the elevation axis clockwise to within a short distance of its physical limit. Note
the azimuth resolver count (from the MANUAL mode) and enter this as the CW limit in the AZIMUTH
PULSE DRIVE configuration screen. An azimuth resolver count greater than this value will thereafter
generate an azimuth CW limit.
Azimuth CCW limit. Move the azimuth axis counterclockwise to within a short distance of its physical
limit. Note the azimuth resolver count (from the MANUAL mode) and enter this as the CCW limit in the
AZIMUTH PULSE DRIVE configuration screen. An azimuth resolver count less than this value will
thereafter generate an azimuth CCW limit.
2.4.2 Azimuth and Elevation Alignment
As described in the baseline manual, perform a LOCATE to several known satellites. If necessary,
correct any calibration values in order to achieve satisfactory automatic LOCATEs.
2.4.3 Signal Strength Adjustment
NOTE: The RC3000 will initially be calibrated to work with a signal strength input that varies between 0.0
(off satellite) to 10.0 (strongly on satellite) VDC.
Follow the RC3000 signal strength adjustment procedure described in the RC3000 manual Section 2.4.3.
This procedure requires finding a strong satellite signal, measuring the beacon receiver output voltage
and then looking at open space and measuring the output signal. Alternatively, a DC voltage of the
correct level may be injected into the RC3000 AGC pin on J2. The nominal setup will use AGC channel 1
of the RC3000.
RC3000 Antenna Controller
Appendix B - Mount Specific Data
B- 5
3.0 Detailed Operation
3.1.1 Modes
While the basic functionality of the RC3000 is as described in the baseline manual, several modes are
customized and several modes are unique for operation with the M2 mount.
3.2.1 Manual Mode
TRUE: 141.1(157.6) SS1:579
MANUAL
ELEV: -67.5( 42.4) SAT:telstar 402
SPD:FAST
UTC
<0-9>JOG ANTENNA
<MODE>MENU
14:25:47
SS1: 659
The M2 version will initialize showing the SS1 signal value rather than the RF value.
TRUE: 141.1
The M2 version will initialize showing TRUE heading (180.0 + antenna azimuth angle in Northern
Hemisphere).
3.2.2.3 LOCATE
LOCATE mode operates in the fashion described in the baseline manual.
NOTE: rather than AZIM (antenna angle) the LOCATE screen will display the TRUE heading target as
this is more appropriate for a fixed base antenna.
3.2.2.7 POSITION
From the POSITION screen, only the ability to change lat/lon is provided for the fixed base antenna.
L/L: 38.56 N 98.45 W MANUAL
<1>LAT/LON
POSITION
<MODE>MENU
3.2.2.9 TRACK
3.2.2.10 REMOTE
TRACK and REMOTE modes perform as described in the baseline manual.
RC3000 Antenna Controller
Appendix B - Mount Specific Data
B- 6
3.3 Programming Group
All programming group modes described in the baseline manual are provided.
3.3.1.2 Reset Defaults
The following table supplies the default configuration item values for this mount. Space has also been
provided to record installation specific changes to the configuration items. Note: recording of installation
specific changes to defaults may prove valuable when trying to restore system configuration.
RC3000 Antenna Controller
CONFIGURATION ITEM
B- 7
Appendix B - Mount Specific Data
M2
SYSTEM DEFINITION
GPS_present
0
Compass_present
0
Initial_mode
2
antenna_size_cm
450
Waveguide_present
0
ELEVATION CALIBRATION
Zero Voltage
2.50
Elev_offset
0.0
Up_elev_limit
90
Down_elev_limit
0
Elevation_Scale_Factor
50.00
Elevation_look_configuration
1
Elevation_resolver_reversed
0
Elevation_resolver_offset
-135.00
AZIMUTH CALIBRATION
Azim_offset
0.0
ccw_azim_limit
60
Cw_azim_limit
60
Azimuth_resolver_reversed
0
Azimuth_resolver_offset
-180.00
POLARIZATION CALIBRATION
Zero Voltage
2.50
Polarization_Offset
0.0
CW Polarization Limit
90.0
CCW Polarization Limit
90.0
Pol_Scale_Factor
37.50
Polarization_type
1
H/V_Reference
1
Pol_Automove_Enable
1
SIGNAL PARAMETERS
Channel 1 Polarity
1
Channel 1 Threshold
100
Channel 1 Delay
0.1
Channel 1 Lock Type
0
Channel 2 Polarity
1
Channel 2 Threshold
100
Channel 2 Delay
0.1
Channel 2 Lock Type
0
AUTOPEAK
Autopeak Enabled
2
Signal Source
2
RF Band
4
Spiral Search AZ Limit
5
Spiral Search EL Limit
5
Spiral Signal Threshold
200
Scan Range Limit
8
Scan Signal Threshold
200
COMMENTS
Set during calibration
Set during calibration
1=Circular=> No Pol Axis
Enabled with peak
2=SS1
INSTALL
VALUE
RC3000 Antenna Controller
CONFIGURATION ITEM
AZIMUTH POT DRIVE
Fast/Slow Threshold
Maximum Position Error
Coast Threshold
Maximum Retry Count
AZIMUTH PULSE DRIVE
Pulse Scale Factor
CW Pulse Limit
CCW Pulse Limit
Fast/Slow Threshold
Maximum Position Error
Coast Threshold
Maximum Retry Count
AZIM DRIVE MONITORING
Jam Slop
Runaway Slop
Fast Deadband
Slow Deadband
ELEV POT DRIVE
Fast/Slow Threshold
Maximum Position Error
Coast Threshold
Maximum Retry Count
ELEV PULSE DRIVE
Pulse Scale Factor
UP Pulse Limit
Down Pulse Limit
Fast/Slow Threshold
Maximum Position Error
Coast Threshold
Maximum Retry Count
ELEV DRIVE MONITORING
Jam Slop
Runaway Slop
Fast Deadband
Slow Deadband
POL POT DRIVE
Fast/Slow Threshold
Maximum Position Error
Coast Threshold
Maximum Retry Count
POL DRIVE MONITORING
Jam Slop
Runaway Slop
Fast Deadband
Slow Deadband
B- 8
Appendix B - Mount Specific Data
M2
2.5
0.2
0.1
3
10431
64000
100
50
0
3
3
1
200
1000
500
3.0
0.2
0.4
3
10431
64000
100
50
0
3
3
1
200
1000
500
2.0
0.5
0.3
3
1
200
1000
500
COMMENTS
INSTALL
VALUE
RC3000 Antenna Controller
CONFIGURATION ITEM
TRACK
Search Enable
Max Track Error
Search Width
Peakup Holdoff Time
Track Signal Source
Signal Sample Time
REMOTE CONTROL
Remote Enabled
Bus Address
Baud Rate
Jog
STOW / DEPLOY
AZ STOW
EL STOW
PL STOW
AZ DEPLOY
EL DEPLOY
PL DEPLOY
PL ENABLED
B- 9
Appendix B - Mount Specific Data
M2
0
3
4
120
1
2
1
50
6
20
0.0
0.0
0.0
0.0
45.0
0.0
1
COMMENTS
2=SS1
INSTALL
VALUE
RC3000 Antenna Controller
4.2 Schematics
Appendix B - Mount Specific Data
B- 10
Was this manual useful for you? yes no
Thank you for your participation!

* Your assessment is very important for improving the work of artificial intelligence, which forms the content of this project

Download PDF

advertising