RESEARCH CONCEPTS RC2000A DUAL AXIS Instructions Manual page 7

3.3.92 v 1.11
* Updated satellite list.
* Revised antenna anti-reversal algorithm to function properly for short moves.
4.8.92 v 1.21 Effective S/N E1015, 1018 and thereafter
* Setup mode modified to allow movement of the antenna.
* For modified polar mounts, the elevation position can be displayed relative to the geosynchronous
position.
* The EAST and WEST keys have been reversed.
* The user is prompted to enter a longitude when a satellite is added in SETUP mode.
* A bug was corrected relating to the display of satellite names after a deletion took place.
9.24.92 v 1.22 Effective S/N 1073
* Capability for angle display of the az and el axis has been added for elevation over azimuth mounts.
* Two C programs are included for the derivation of the needed display constants for angle conversion.
* The 32K x 8 SRAM was replaced with an 8K x 8, and new PLD is RC2KD.
4.27.93 v 1.30 Effective S/N 1136
* Support has been included for a polarization motor which uses a pot for feedback.
* The software has been modified for use with AC motors.
* The remote mode code has been modified so that an auto move may specify an azimuth and
elevation position in place of the satellite name.
* A system has been designed which limits user access to certain config mode items and modes.
* Whenever the baud rate is changed, the unit must be powered down and back up in order for the
change to take effect. Note that invoking the reset-system-data command from CONFIG mode will
reset the baud rate to the default value of 9600.
10.20.95 v 1.40 / v1.41
Versions 1.40 and 1.41 differ in the polarization control options which are supported. Version 1.40 can
accept the RC2KPOL option, which is designed to interface with the Seavey model ESD-124D 4 port
motorized feed (24 VDC, 500 milliamps max) with potentiometer feedback. Version 1.41 can accept the
RC2KHPP option. The RC2KHPP option is designed to interface with motorized feeds with
potentiometer feedback which require 5 to 40 volts DC at 3 amps.
* Updated satellite list.
* The 'POLAROTOR PRESENT?' CONFIG mode prompt was replaced with 'ROTATING FEED
PRESENT?'
REVISION HISTORY
Effective S/N 1599