T962 DAQ-480 Power Control and Cold Start Procedures ---------------------------------------------------------- Original Rev. 4-JUL-2008 Current Rev. 19-MAY-2009 The following topics are covered in this note: - Emergency Power Down - Power Up - Normal Power Down - Cold Start of the DAQ-480 System Emergency Power Down -------------------- If you need to quickly turn off the T962 DAQ system because of a problem with it then just do the following: Turn OFF all the breakers at the top of the T962 DAQ Rack, i.e. T962 Rack Number 1. Doing this will remove all AC line power from: - the 2 VME crates in the DAQ rack - the 2 PreAmp Power Supplies in the DAQ rack - and from the PreAmp Air Blower Please do not use this emergency procedure for the normal shutdown of the T962 DAQ system. Power Up Procedure ------------------ 1. If it is not ON then turn ON the breaker in the top of T962 Rack #2 that is labeled, "Permit to DAQ Rack". 2. If they are not ON then turn ON the three breakers at the top of the DAQ Rack that are labeled, "PreAmp Air Blower", "Top VME & Top PreAmp", and "Bottom VME & Bottom PreAmp". Allow about 5 seconds between turning on each of these breakers. 3. The PreAmp Air Blower is the green panel near the top of the DAQ Rack. Start the PreAmp Air Blower by turning on the large 3 phase breaker on the front of it. Listen to make certain that within a few seconds you can hear the blower motor running. If the blower motor does not start within 10 seconds then please turn its breaker back off. 4. The next step is to turn on the two PreAmp Power Supplies. These are the two black chassis near the bottom of the DAQ rack. It is important that you use a fast snap action when you turn on the breakers on the front of these supplies. Turn them on by moving their large 3 phase front panel breaker handle up in one fast continuous snap. Please turn on the lower PreAmp Power Supply first and then the upper one. As soon as you turn on a PreAmp Supply you will see a large AC power indicator illuminate and 4 smaller red LEDs, one for each supply Voltage, will also illuminate. 5. The last step in powering up the DAQ-480 system is to turn on the two VME crates. The power switch on these crates is the small red switch on the right hand side of the panel that is under the cards in each crate. To turn on one of these crates lift up the small red power switch handle and hold it up for a couple of seconds. When you see the display (to the left of the power switch) indicate that the crate is starting then you may let go of the switch handle. Please turn on the lower VME crate first and then the upper VME crate. Normal Power Down ----------------- 1. Turn off the two VME crates. Hold each crate's power switch handle down for a couple of seconds until it turns off. Turn off the upper VME crate first and then the lower crate. The fans in the two VME crates will continue to run for up to 1 minute after you turn off a crate. 2. Turn off the two PreAmp Power Supplies by flipping off their large 3 phase power switches. Flip them off with a fast snap action. Please turn off the upper PreAmp Power Supply first and then turn off the lower one. 3. Turn off the PreAmp Air Blower. 4. Turn OFF the three breakers at the top of the DAQ Rack that are labeled, "PreAmp Air Blower", "Top VME & Top PreAmp", and "Bottom VME & Bottom PreAmp". Cold Start of the DAQ-480 System -------------------------------- You only need to do the following procedure if you are cold starting the DAQ_480 System. If the system has been on and running then you do not need to do the following procedure before starting a new run. 1. Working on the T962 Windows DAQ computer, if the DAQ_480_GUI and the DAQ_480_TCS programs are not running then please start them. Start the DAQ_480_GUI first. Starting DAQ_480_GUI will open a user menu window and a log file window. Starting the DAQ_480_TCS program will open a log file window. It is good to have a standard placement for these windows on the console, e.g. user menu on the lower left, GUI log on the lower right, and TCS log on the upper right. 2. The next step is to "Configure" the logic into the FPGAs on the ADF-2 cards in the VME crate. When power is turned on to these FPGAs they wake up with no logic in them. To configure the FPGAs just click the "Configure DAQ_480" button in the bottom section of the user menu. It takes about 30 seconds for the DAQ computer to complete this configuration step. 3. Now that there is logic in the FPGAs and thus they have instantiated all of their VME control and status registers we must load default values into all of these control registers. At the same time the system will adjust the pedestal value of each channel to be 400 ADC counts decimal. This combined process is called "Initializing" the system. To do this just click the "Initialize DAQ_480" button in the bottom section of the user menu. Writing values into all of the control registers will take about 1 minute. After that the system will adjust each channel's pedestal and calculate its rms noise level. In blocks of 32 channels the rms noise level data is shown to the user in a small window that will pop up. You must click the close button in these rms noise value display windows or hit carriage return to close the display for a given block of 32 channels and open the display for the next group of 32 channels. After going through all 15 of these 32 channel rms noise display windows the DAQ_480 system is ready to collect events.