Operator`s manual

1.1 Overview of Capabilities
The SRT is capable of spectral line (1420 MHz hydrogen) and continuum observations using
source tracking, 25-point maps and drift-scans.
Aperture 2.1 Meters
LO Frequency Range 1370 - 1800 MHz
LO Tuning Step 40 kHz
Preamp Frequency Range 1400 - 1440 MHz
System Temperature 150 K
Pointing Accuracy 1 Degree
Travel Limits (degrees) ~360 Azimuth/~0-90 Elevation
See added capabilities of the digital receiver at
http://web.haystack.mit.edu/SRT/receiver_1.html
1.2.1 Getting Started
The SRT control software is a JAVA-based program designed to be portable to most computer
operating-system platforms. The main telescope control interface is an active window with which
the user can enable the telescope functions either by a simple mouse click or by a combination of
mouse clicks and text entry. Users can also construct command files (form filename.cmd) which
will take data and calibrate the SRT automatically.
The control window can be seen in Figure-1. For the purposes of this tutorial, the explanation of
the control screen will be covered in seven separate sections in section 1.3.
The Java software consists of fourteen .java files.
geom.java plots.java time.java velspec.java
srt.java disp.java sport.java hdisp.java
global.java cat.java map.java
checkey.java procs.java outfile.java
Also needed are dynamically linked library files (.dll) which are imported when the .java files are
complied.
The user will need to import a Java Standard Edition (SDK) as well as the javacomm20-win-
32.zip (windows OS) for the serial port communication API. Note: Previous editions were titled
Java Development Kit (JDK)
Instructions for setting the CLASSPATH for Windows-NT and XP can be found on the Haystack
Web site at
http://web.haystack.mit.edu/SRT/winNTdl.html . When you have installed your Java
Standard Edition and downloaded the SRT java files,