Satel Az-EL, Инструкция по эксплуатации

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14
Appendix A. Running the controller using a terminal
The original VE5FP Az-El system was described in an article in the December 1999
issue of QST. This article has been subsequently republished in the ARRL Satellite Anthology.
The VE5FP Az-El system was designed to be operated by a terminal connected to the
controller by an RS-232 serial port. There were a number of ‘commands’ each of which
consisted of a single letter typed at the terminal. For example, the letter, ‘x’, would clear the
controller’s memory. The letter ‘z’ would cause the controller to send back a status report.
The controller did not echo back these commands and neither does the Sat
EL controller.
These commands, which could be in either upper or lower case, are summarized in the table
below.
x Clears the controller ephemeris memory
c Starts the calibration procedure
t Display the controller’s current time
*
u Start the elevation rotor moving upwards
d Start the elevation rotor moving downwards
r Start the azimuth rotor moving clockwise
l Start the azimuth rotor moving counter-clockwise
s Stop the rotors (if moving), disable automatic motion
g Enable automatic motion
p Point the rotors to a particular azimuth and elevation
**
2 The start of an ephemeris time/position data point for storage into
memory
***
z Display the controller’s current status
•
* If the single ‘t’ is followed by the < Enter > key, the controller responds by outputting it’s
own internal clock’s time. If it is followed by a number, that number plus the next
characters must consist of the value of time to be loaded into the controller’s memory.
For example, T2002/02/14 12:20:30<
Enter > would set the controller’s internal clock to
12:20:30 14 February, 2002. The time/date order is yyyy/mm/dd hh:mm:ss.
•
** For example, the command P20 40< Enter > would cause the rotors to move to an
azimuth of 20 degrees and an elevation of 40 degrees. There is no space between the
P and the first character of the azimuth but there is between the azimuth and the
elevation. Automatic motion must be enabled to allow rotor movement. If automatic
motion is disabled, the controller ignores this command.