The SCREEN program provides the user with several screens of data about the tracking programs. These screens are selected with the SCREEN keyword, followed by the desired screen number. The default display is SCREEN 1, which contains a summary of basic information about all aspects of the system. Other screens provide more detailed information on individual subsystems. In Table 2.2, we provide a list of the screens and the information available on them. On some screens, different subsets of data may be selected by using the WINDOW command. Thus, on SCREEN 1, it is possible to display the status of a remote user by selecting WINDOW 1 or the individual systems temperatures recorded in each backend by selecting WINDOW 2.
| SCREEN | WINDOW | INFORMATION |
| 1 | 0 | Basic display screen during observations. |
| 1 | 1 | Screen 1 with Remote user status subwindow. |
| 1 | 2 | Screen 1 with receiver frontend Tsys subwindow. |
| 2 | - | Sensor/Alarm status for Sensor/Alarm Number 17-19. |
| 3 | - | Filterbank bad channel list. |
| 4 | - | Receiver "backend" status. |
| 5 | - | Pointing Information. |
| 6 | - | Sensor/Alarm status for Sensor/Alarm Numbers 1-16. |
| 7 | - | Status of CPU Tasks. |
| 8 | - | Receiver "frontend" frequency information and status. |
| 9 | - | User-defined functions and REVIEW listings. |
| 10 | 0 | Antenna temperature sensor readouts. |
| 10 | 1 | Antenna temperature differences from mean temperature. |
| 11 | - | DIP program results. |
| 12 | - | TUNE program output. |
| 13 | 0 | Remote user message screen. |
| 13 | 1 | "News" screen. |
| 14 | - | Receiver "backend" counter display. |
| 15 | 0 | SEQUOIA Receiver Information: Tsys and Beam Offsets |
| 15 | 1 | SEQUOIA Receiver IF Levels and Mixer voltages |
| 15 | 2 | SEQUOIA Receiver Info: Cal Constants |
| 15 | 3 | FAAS System Temperatures |
| 16 | - | Integration Hold Sensor Status |
| 17 | - | Recent Pointing Data |
| 18 | - | Environment Status |
| 19 | - | AutoPoint Status |
Hard copy of output from the tracking and/or data collection programs is also available. The COPY command directs the tracking programs to write the contents of the current screen to one of the other terminals or printers on the system. Thus, COPY A06 writes a copy of the current screen to the line printer in the control room. Another useful command for directing output is the RESULTS command, which allows the user to assign the output device for data written by data collection programs, such as CAL or DPS. The command RESULTS A06 will cause the results of all data taking programs to be written to the line printer in the control room. The command RESULTS NO will keep results from being written.
!!! If RESULTS are sent to the control room line printer (A06), it is important to be sure that the printer is on and on line and that buffer box is on. Failure to do this will keep results from being printed out and might hang up the data taking program that is trying to write them.