# DISCOS startup¶

## What to use viewer01 for¶

This machine is accessed to manage the ACS Command Center and the Active Surface GUI. Under ordinary conditions it is used to monitor the AS status, plus it is to be accessed to reboot discos/ACS whenever needed. You can login with:

username: discos       pwd:  **********


If VNC is not active, open a terminal and use the vncStart command, which is automatically going to connect to the discos-manager machine:

login: discos     pwd: **********


## What to use viewer02 for¶

Observations take place using the viewer02 machine, in turn exploiting a VNC connection to the discos-console machine.

username: observer       pwd:  **********


If VNC is not active, open a terminal and use the vncStart command, which is going to connect to the discos-console machine:

login: observer     pwd: **********


The VNC desktop might be larger than the monitor; you can scroll horizontally using the bottom scrollbar. Beware that, when launching programs, they might open windows in the invisible desktop area!

Once logged in on discos-console, you should find the input terminal and all the monitors already running. If this is not the case, open a new terminal, then:

$discosConsole  This command opens 9 panels at once: • operatorInput - terminal for command line input • AntennaBoss • GenericBackend • Mount • Observatory • Receivers • Scheduler • MinorServo • ACS Custom Logger Rearrange the panels on the desktop according to your preferences. In case any of them does not automatically start, or if you close any of them by accident, you can manually open them by means of individual command lines, to be given in the open terminal: $ operatorInput
$antennaBossTui$ genericBackendTui BACKENDS/TotalPower  (or XARCOS, or SARDARA)
$mountTui$ observatoryTui
$receiversBossTui$ schedulerTui
$minorservoBossTui$ loggingDisplay


All the antenna/receiver/backend setup procedures are performed via the operatorInput window, which is also used to start/stop the schedules.

The other panels are monitors used to display a vast amount of information, see Appendix A - Monitor panels full description and Appendix B - Complete command list for a comprehensive description of their content and a list of all the commands available for the operatorInput (they can be inserted in schedules as well).

The operatorInput panel supports “TAB-completion”. For example (op):

> f<TAB>
flush      flushAll     focusScan

> fo<TAB>
> focusScan


> help(focusScan)

focusScan=span,duration
commands a focus scan on a previously selected target
(by means of the track or sidereal commands).
Parameters:

* span: the length run on the z-axis expressed in mm,
* duration: the time length espressed in hh:mm:ss,

e.g. > focusScan=60,00:01:00


> help(fo<TAB>
> help(focusScan


The help() command shows the complete command list:

> help()

antennaPark
antennaReset
antennaSetup
...
tsys
wait
wx


Note

discos-console is also the location where users need to copy their schedules to, and where they can retrieve their data from. See section Retrieving the data for details.