Differences

This shows you the differences between two versions of the page.

Link to this comparison view

Both sides previous revision Previous revision
cso:telescope:dsos:userproc [2014-03-12 18:55]
sradford
cso:telescope:dsos:userproc [2014-03-18 06:55] (current)
sradford
Line 1: Line 1:
 +====== DSOS User Procedure ======
 + 
 +==== Startup ====
  
 +  - Open the dome [[..:​shutter]]. This helps the telescope and the chillers (Neslabs) equilibrate at the ambient temperature. ​
 +  - Tip the telescope to ZA = 45°. \\ ''​__UIP__>​ **za 45**''​
 +  - [[cso:​observing:​remoteobs#​connect_to_the_vnc_desktop|Connect]] to the VNC desktop. \\ ''​mycomp>​ **csovnc.pl -l //user// dsos ** '' ​
 +    * There are three windows on the desktop
 +      * The DSOS monitor on the left. The monitor should be running already.
 +      * The command window on the lower right.
 +      * The agent window on the upper right.
 +    * If any of these windows are missing, click on a blank area to display a pop up menu then select the corresponding item to recreate the missing window.
 +    * Starting the DSOS monitor also starts the DSOS daemon and server, if necessary.
 +  - Initialize the system. In the command window, type \\ ''​tpick% **DSOSinit**''​
 +    * This creates the baseline setting for the night.
 +    * Initialization should be done with the dome open, at least 1 hour after sunset, and with the telescope at ZA = 45°.      ​
 +  - Enable the power supplies.
 +    * Display the the power supply page in the status monitor. In the monitor window, type **''​p''​**. ​
 +    * Enable the power supply outputs. In the command window, type \\ ''​tpick% **DSOSpower on**''​
 +      * The power supplies are normally left in standby mode during the day.
 +      * On the front panels, the //remote// light should be illuminated. ​
 +      * If any power supplies are in manual mode, [[#​Manual_start|start]] them.
 +  - Settling.
 +    * Depending on the initial toothpick (actuator) displacements,​ the system needs about 15 min to settle.
 +    * The power supply monitor page shows the current demands.
 +    * After settling, the current ideally will be 9 A or less for both +15 V (odd) and -15 V (even) power supplies. Under some circumstances,​ the current may remain higher.
 +  - Display the dish status in the status monitor. In the monitor window, type **''​1''​**.
 +    * There is a box for each actuator (toothpick).
 +    * After settling, all but a few boxes will be white.
 +  - System Agent.
 +    * In the agent window, type \\ ''​tpick% **DSOSagent**''​
 +    * Every 2.5 min, the system agent commands the specific actuator (toothpick) displacements appropriate for the telescope ZA.
 +    * Command values and settings are logged in **''​agent.log''​**.
 + 
 +==== Shutdown ====
 +
 +  - At the end of observing, stop the DSOS agent. In the agent window, type **''​ctrl-C''​**.
 +  - Return the system to its baseline value. In the command window, type \\ ''​tpick% **DSOSbase**''​
 +  - After 10 minutes, disable the power supply outputs. In the command window, type \\ ''​tpick% **DSOSpower off**'' ​
 +  - Please turn off any power supplies that are in manual mode. Leave everything else on.
 +  - Disconnect from the VNC desktop. ​
 +
 +==== System checks ====
 +
 +During observations,​ please check the system periodically. ​
 +  * If any thermistor or D/A values are 0.00, the computer will issue a warning. ​
 +  * Is coolant flowing to the dish manifold and to the system racks? ​
 +  * Are any chillers (Neslabs), pumps, or rack fans are not running?  ​
 +  * Are any power supply pairs very one sided? For example:\\ PS1 = \_7V / 75.0A\\ PS2 = 15V / 0.00A\\
 +
 +Should any of these faults occur, turn off the power supplies first. Then shut down the rest of the system. ​
 +//Do not use the DSOS until the fault is repaired.//
 +Left uncorrected,​ these faults may cause system damage and misadjustment of the dish panels. \\
 +**Essential.** Please notify CSO staff what failed and when.   
 +
 +===== Troubleshooting =====
 +
 +==== Reinitialization ====
 +
 +If the system was initialized during the day before sunset, reinitializing 1 hour after the sunset is worthwhile. ​
 +Another reason for reinitialize is a change of more than 5 °C in the ambient temperature since the original initialization. ​
 +A significant temperature change in the middle of the night often indicates, however, bad observing weather, so be sure to check for rain or snow. Shutting the dome may be necessary. ​
 +It is //not// recommended to rebaseline often. ​
 +  * Stop the DSOS agent. Type **''​ctrl-C''​** in the agent window. ​
 +  * Return the system to its baseline value. Type **''​DSOSbase''​** in the command window. ​
 +  * After 10 minutes, disable the power supply outputs. Type **''​DSOSpower off''​** in the command window. ​
 +  * Tip the dish to 45° (''​__UIP__>​ **za 45**''​).
 +  * Wait 40 minutes for the telescope to equilibrate to ambient temperature. ​
 +  * Start again with the Initialization step above. ​
 +
 +
 +==== Power Supplies ====
 +
 +=== Reset ===
 +
 +On occasion, the power supplies get confused, which prevents them from turning on correctly. If this occurs, reset them.
 +  * Display the the power supply page in the status monitor. In the monitor window, type **''​p''​**. ​
 +  * Disable the power supply outputs. Type **''​DSOSpower off''​** in the command window.
 +  * Reset the power supplies. Type **''​DSOSpower reset''​** in the command window. ​
 +    * In the status monitor, the supplies will be ''​OFFLINE''​ and the times won't update.
 +  * Return the power supplies to standby. Type **''​DSOSpower off''​** in the command window.
 +    * It will take a minute or two before they return to ''​STANDBY''​ and the times update again.
 +  * Enable the power supply outputs. Type **''​DSOSpower on''​** in the command window. ​
 +  * Resume the startup procedure.
 +
 +Do not repeat this procedure more than a couple of times. If it doesn'​t fix the problem, then something else must be 
 +wrong.
 +
 +=== Manual start ===
 +
 +In unusual circumstances,​ power supplies may require manual starts. Power supplies are always operated in pairs. ​
 +
 +== New style ==
 +
 +  - Turn on both supplies using the switches on the left of their front panels.
 +  - Once the supplies stabilize, the panel displays will indicate (close to) zero voltage and current. \\ ''​Output 0.00 VOLTS''​ \\ ''​\_\_\_\_\_\_\_ 0.0 AMPS''​
 +  - Press the ''​**MENU**''​ buttons near the keypad on the right of the front panels. ​
 +  - The displays will indicate the memory locations, 1 ≤ //N// ≤ 9, and the the correct correct voltage and current settings. \\ ''​Restore from Memory: ​ //​N//''​ \\ ''​\_15.00 V   75.0 A   3000 W''​
 +  - After the proper settings are displayed on both supplies, simultaneously press the ''​**ENTER**''​ buttons on the right of the panels. This applies both biases to the power amps at the same time.
 +  - The displays will initially indicate something like: \\ ''​Output 15.00 VOLTS''​ \\ ''​\_\_\_\_\_\_\_ 75.0 AMPS''​
 +  - Repeat for any other pairs of supplies in manual mode. 
 +
 +== Old style ==
 +
 +  - Turn on both supplies using the switches on the left of their front panels.
 +  - Press ''​**ENABLE**''​ on the left side. 
 +    * Simultaneously with the new style ''​**ENTER**''​ if a mixed configuration is used.
 +
 +== Turn off ==
 +
 +  - Turn off supplies using the switches on the left of their front panels.
 +
 +==== Coolant ====
 +
 +=== Chillers (Neslabs) ===
 +
 +If any of the chillers sounds an alarm, check its error display.
 +  * ''​ADD'': ​
 +    * Fill the bath with distilled water to the //lower// fill line. 
 +  * ''​Error 54'': ​
 +    * Press the up and down arrow keys on the front panel simultaneously and hold for 10 seconds until the alarm turns off. 
 +    * Press the computer control button (picture of a keyboard on the button) so that the light is off. 
 +    * Turn the chiller off. 
 +    * Turn the chiller back on. The alarm and error message should be gone. 
 +  * Any other error:
 +    * Shut down the system. ​
 +    * //Do not use the DSOS until the chiller is repaired or replaced.//
 +    * **Essential.** Please notify CSO staff which chiller failed and at when. 
 +
 +=== Pumps ===
 +
 +If any of the four pumps supplying the dish manifolds fails, usually the meters will read low (or no) pressure and the pump may be hot to the touch. ​
 +  * Turn off the power supplies. ​
 +  * Close the manifold valves on the failed pump. There are three valves for each pump. Turn them clockwise until they close. ​
 +  * Shut off the power to the failed pump. Either turn off its power strip or unplug the pump from its power strip. ​
 +  * Shut down the rest of the system. ​
 +  * //Do not use the DSOS until the pump is repaired or replaced.//
 +  * **Essential.** Please notify CSO staff which pump failed and at when. 
cso/telescope/dsos/userproc.txt · Last modified: 2014-03-18 06:55 by sradford
 
Recent changes RSS feed Donate Powered by PHP Valid XHTML 1.0 Valid CSS Driven by DokuWiki