Operator`s manual

Drift - A left mouse click on Drift will offset the SRT in Right Ascension and
Declination to allow the selected source to drift through the 7-degree beam of the
telescope.
record - Toggles output file recording on and off. Output data files are labeled in the
form:
yydddhh.rad
Record also allows the user to enter a filename.
Rcmdfl - Initiates reading of the default command file (srt.cmd) and begins data
recording. The current line number and text being read is echoed on the message board
above the text entry box. To start automatic recording and reading of a file other than the
default srt.cmd, enter the desired command file name (with the .cmd suffix) in the
command text entry box.
Cal - Starts an automatic calibration sequence during which a noise source, located at
the apex of the antenna surface, is enabled for ~1 second. The system then takes a data
sample without the noise source enabled. The resulting system noise temperature is
reported in the information side bar as "Tsys".
Vane - Starts an automatic calibration sequence during which the receiver is blocked by
an ambient temperature vane calibrator (motion ~20 seconds). The system then compares
data with the vane in place to data with the vane retracted. The resulting system noise
temperature is reported in the information side bar as "Tsys".
The actions initiated by the command tool buttons can also be listed in a command file
and run automatically. See section 1.5 for information about building command files.
Note: All input actions are delayed until the completion of any "in progress" frequency
scan. A message to this effect is shaded blue and is displayed in the upper right of the
message board area. (see figure 3)