Research Concepts RC3000 User Manual
Page 86
RC3000 Antenna Controller
Chapter 3
Detailed Operation
78
LONGITUDE: described in decimal degrees (180.0W to 180.0E)
INCLINATION: the number of degrees of orbital inclination. If a satellite is described as having an
inclination greater than zero, the RC3000 will consider it an inclined orbit satellite and subsequently
attempt to track its movement.
BAND: the RF band that the user’s equipment will be receiving from the satellite. The band information
helps determine tracking movement size and timing. Throughout the RC3000, the bands are assigned
numbers from the following list: <0-C 1-Ku 2-CK 3-L 4-X 5-Ka 6-S>
POLARIZATION OFFSET: predicted polarization angles (horizontal and vertical) assume that the
spacecraft maintains its polarization axis oriented with the equatorial plane. A few satellites don't
maintain this orientation. The amount of offset from this standard in degrees must be defined. The sign
convention used is that the offset is defined from the perspective of looking from the earth to the satellite
(clockwise positive, counterclockwise negative). If no offset exists, the default value of 0 is described.
When the <1> key is selected from the main LOCATE screen, the following screen appears to allow the
user to select new satellite information via three methods.
1-MANUALLY ENTER SAT DATA LOCATE
2-CHOOSE SAT FROM PRESET LIST
3-SELECT SAT LONGITUDE
<1-3>SELECT SAT DATA SOURCE
manual satellite entry
NAME: LON: LOCATE
INCLIN: BAND:
PL_OFF:
ENTER NAME
When the user chooses to manually enter the satellite data, a screen appears with fields to enter the four
required pieces of data.
Preset satellite list
LOCATE
# NAME LON INC BAND
1 BRASIL A1 79.0W 2 C
When the user chooses to select a satellite from the user programmed list of satellites, a screen appears
allowing the user to scroll through the list and select a satellite by pressing the Enter key. The preset list
contains data for 20 satellites programmed by the user via the Preset Satellite configuration mode
(3.3.1.1.3). It is strongly suggested that the user program and use the preset satellite list.
Satellite Longitude
LOCATE
LON: 94W BAND:Ku
(ASSUMES NO INCLINATION & POL OFFSET)
When the user chooses to select a satellite longitude, a screen appears showing the satellite orbital slot
closes to the mount's current longitude. The user may change the orbital slot by one degree at a time by
scrolling up or down (down for more Westerly, up for more Easterly). The selected satellite's band may
also be changed. The name used by the LOCATE function will reflect the orbital slot selected ( "94W" in
the above example.)
NOTE: Selected satellite data pertains only to information about a particular satellite. With respect to the
RC3000 this is not considered “STOREd” data. See the STORE mode (3.2.2.4) for more information.