Research Concepts RC2000C - Manual (Page 15)

RC2000C Az/El Tracking Antenna Controller Chapter 2 Basic Function Description 7
Research Concepts, Inc. • 5420 Martindale Road • Shawnee, Kansas • 66218-9680 • USA www.researchconcepts.com
USE SCROLL UP/DOWN, ENTER TO SELECT
This mode allows the user to delete satellites from non-volatile memory. The SCROLL UP/DOWN and
ENTER keys are active.
RE-SYNC
SELECT A SATELLITE: PANAMSAT-1 RE-SYNC
USE SCROLL UP/DOWN, ENTER TO SELECT
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 geostationary satellite that 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
ANTENNA LATITUDE LL.L:45.0 CONFIG
TENTHS AFTER DEC. PT ENT,BKSP,SCRLL ^v
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,
Az/El angle display parameters, Az/El slow speed and movement 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: 761, 512 LIMITS
7 - SET CCW 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 azimuth CCW and CCW limits and/or down and up limits. Note that the
sense of the azimuth CCW and CCW limits is defined as seen by an observer located above the
antenna. 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, CCW, and CW limits.
To set the azimuth limits, the user would first move the antenna to the desired Azim CCW limit, hit
ENTER to set the limit, then move the antenna to the desired Azim CW limit and hit ENTER to set that
limit. (Whenever the limits are reset, the CCW and down limits are initialized to a position count of 30.)
To the right of the SS1,2: banner the current signal strength on AGC channels 1 and 2 are displayed.