RESEARCH CONCEPTS RC2000C Manual page 13

RC2000C Polar Tracking Antenna Controller
The antenna azimuth and/or elevation position can be corrupted by any number of causes (sensor failure,
lightning strike, faulty shield connection, etc). If there is an error in the position counts, the controller
cannot properly position itself on the satellites stored in non-volatile memory, and the limits are not valid.
In this situation, it is necessary to re-synchronize the controller's internal position counts.
To do this, the operator positions the antenna on a known satellite which has previously been stored in
the controller's non-volatile memory (preferably a Ku band satellite, since the beamwidth of the antenna is
narrower at Ku band than at C band). The user then activates RE-SYNC mode, and uses the SCROLL
UP/DOWN keys to select the satellite name with which the antenna is currently aligned. When the
ENTER key is hit, the controller's internal position counts for that satellite are initialized to the current
position, and a corresponding adjustment is made to all other satellite positions across the arc.
CONFIG
AUTOPOL ENABLE:*
0-DISABLE, 1-ENABLE
This mode allows the user to view and enter configuration data into the controller. This data is stored in
non-volatile memory and is used to set certain parameters and enable or disable certain controller
options. The following parameters and options are controlled or configured via data entered into the
controller from CONFIG mode:
AUTOPOL
communication port parameters
simultaneous azimuth/elevation movement
time and date
geo elevation position
az/el slow speed control parameters
polarization options
az/el drive systems options
antenna parameters
tracking system setup and control parameters
In CONFIG mode, the SCROLL UP/DOWN keys are used to select the parameter to be viewed or
modified. If asterisks are displayed in the parameter field, it means that the present value is invalid. It
can be modified using the numeric keypad to key in a new value, followed by ENTER. (For the
modification to take effect the numeric entry must be terminated with the ENTER key.) The message in
the lower left hand corner of the display gives the user data entry instructions.
LIMITS
AZ: 5000 EL: 5000 SS1,2:
7 - SET EAST LIMIT 9 - SET DOWN LIMIT
This mode allows the user to jog the antenna to any azimuth or elevation position without regard to any
existing limits, and initialize the east and west and/or down and up limits. Once the limits are set the
antenna cannot be moved (except in LIMITS mode) to a position that is not within the region defined by
the down, up, east and west limits.
To set the azimuth limits, the user would first move the antenna to the desired east limit, hit ENTER to set
the limit, then move the antenna to the desired west limit and hit ENTER to set that limit. (Whenever the
limits are reset, the east and down limits are initialized to a position count of 30.)
TRACK
AZ: 1344 EL:
GSTAR 3
TRACK mode is activated to track an inclined orbit satellite. TRACK mode is slightly different than the
other modes described above in that TRACK mode cannot be reached directly through the use of the
MODE key. TRACK mode can be entered only via the SETUP or AUTO modes. TRACK mode is
described in Chapter 4.
Research Concepts, Inc. • 5420 Martindale Road • Shawnee, Kansas 66218-9680 • USA
Chapter 2
ENT,BKSP,SCRLL ^v
2,
-46 PL: 73 V S:621 TRAK K
PROGRAM IDLE 15.56.0-MENU
CONFIG
1 LIMITS
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Basic Function 7