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lbaops:observingnotes [2008/07/09 15:06] chris.phillips |
lbaops:observingnotes [2020/03/22 10:26] (current) chrisphillips [ATNF Machines (5 Sept 2018)] |
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- | ==== VLBI Observing Notes\ ==== | + | ==== VLBI Observing Notes ==== |
- | \ | + | |
- | To run a VLBI experiment, a number of independent programs need to be run. This include a program to control the telescope and IF setup, controlling the DAS and the LBADR disk recorder. \ | + | |
- | \ | + | |
- | ===== DAS\ ===== | + | |
- | \ | + | |
- | The DAS is controlled by a gui. Log onto the machine running the DAS control and run\ | + | |
- | \ | + | |
- | > das1 &\ | + | |
- | > das2 &\ | + | |
- | \ | + | |
- | A gui is needed to control each DA individually. For each experiment determine which DAS profile is needed (the wiki guesses the profile, but this is not guaranteed to be correct).\ | + | |
- | * Load the require profile by selecting the '' | + | |
- | * Select '' | + | |
- | * Select '' | + | |
- | \ | + | |
- | Monitor '' | + | |
- | \ | + | |
- | ===== LBADR\ ===== | + | |
- | \ | + | |
- | The LBADR is a disk based recorder based around a standard PC. Data is recorded usually to external Xserve RAIDs, but can also be recorded to removable IDE disks or internal disks.\ | + | |
- | \ | + | |
- | ==== Disk loading\ ==== | + | |
- | \ | + | |
- | There is no need to shutdown the host PC to change Xraid disks. The following steps are needed to swap disks\ | + | |
- | * Check if any of the xraid disks are currently mounted, and if so unmount them.\\\ | + | |
- | ''> | + | |
- | ''> | + | |
- | \ | + | |
- | * Shut down the Xraid chassis, either use the RAID Tools GUI or hold the power button down at the back of the chassis for about 10 seconds (until it starts flashing).\ | + | |
- | \ | + | |
- | * Remove any mounted disks and put them back in their appropriate " | + | |
- | \ | + | |
- | * Install the new disks. Install them in numerical order and gently push each disk in. The " | + | |
- | \ | + | |
- | * Power the chassis on again, either using the control GUI or pressing the power button on the rear. Power on takes a few minutes. Check a green light comes on on each disk. A red or orange light means disk failure.\ | + | |
- | \ | + | |
- | * Mount the disks (see the troubleshooting guide if this does not work)\\\ | + | |
- | '' | + | |
- | \ | + | |
- | * Check the disk ID is updated in cdisko. If not run\\\ | + | |
- | '' | + | |
- | \ | + | |
- | ==== Recording\ ==== | + | |
- | \ | + | |
- | Recording is make by a program called '' | + | |
- | \ | + | |
- | > cdisko\ | + | |
- | \ | + | |
- | Fill in the following fields, based on the notes on the experiment wiki:\ | + | |
- | \ | + | |
- | * For 8 channel recording select the " | + | |
- | \ | + | |
- | * Experiment, Bandwidth, Channel Selection, Duration.\ | + | |
- | \ | + | |
- | * Select the disk partition to record to. If required (ie you are setting up before the experiment starts), select the '' | + | |
- | \ | + | |
- | * Click '' | + | |
- | \ | + | |
- | To determine the correct channel selection, choose either 1-4 or 1-8 for 4 or 8 channel setups (as per the wiki). For other selections, the wiki should give the channel selection required.\ | + | |
- | \ | + | |
- | The Xraid disks are " | + | |
- | \ | + | |
- | \ | + | |
- | The cdisko manual is at http:// | + | |
- | \ | + | |
- | ===== ATNF Machines (9 July 2008)\ ===== | + | |
- | \ | + | |
- | | | Default Recorder | DAS control |\ | + | |
- | | ATCA | cavsi1 | cavsi1 |\ | + | |
- | | Mopra | mpvsi2 | mpvsi2 |\ | + | |
- | | Parkes | pkvsi1 | pkvsi1 | | + | |
+ | To run a VLBI experiment, a number of independent programs need to be run. This include a program to control the telescope and IF setup, controlling the DAS and the LBADR disk recorder. | ||
+ | |||
+ | ===== DAS ===== | ||
+ | |||
+ | The DAS is controlled by a gui. Log onto the machine running the DAS control and run | ||
+ | |||
+ | > das1 & | ||
+ | > das2 & | ||
+ | |||
+ | A gui is needed to control each DA individually. For each experiment determine which DAS profile is needed (the wiki guesses the profile, but this is not guaranteed to be correct). | ||
+ | * Load the require profile by selecting the '' | ||
+ | * Select '' | ||
+ | * Select '' | ||
+ | |||
+ | Monitor '' | ||
+ | |||
+ | **// | ||
+ | |||
+ | ===== LBADR ===== | ||
+ | |||
+ | The LBADR is a disk based recorder based around a standard PC. Data is recorded usually to external Xserve RAIDs, but can also be recorded to removable IDE disks or internal disks. | ||
+ | |||
+ | ==== Disk loading ==== | ||
+ | |||
+ | There is no need to shutdown the host PC to change Xraid disks. The following steps are needed to swap disks | ||
+ | * Check if any of the xraid disks are currently mounted, and if so unmount them. | ||
+ | |||
+ | > df | grep xraid | ||
+ | > umount / | ||
+ | (for example, do all mounted disks) | ||
+ | |||
+ | * Shut down the Xraid chassis, either use the RAID Tools GUI or hold the power button down at the back of the chassis for about 10 seconds (until it starts flashing). | ||
+ | |||
+ | * Remove any mounted disks and put them back in their appropriate " | ||
+ | |||
+ | * Install the new disks. Install them in numerical order and gently push each disk in. The " | ||
+ | |||
+ | * Power the chassis on again, either using the control GUI or pressing the power button on the rear. Power on takes a few minutes. Check a green light comes on on each disk. A red or orange light means disk failure. | ||
+ | |||
+ | * Mount the disks (see the troubleshooting guide if this does not work) | ||
+ | |||
+ | > mount / | ||
+ | etc | ||
+ | |||
+ | * Check the disk ID is updated in cdisko. If not run | ||
+ | |||
+ | > / | ||
+ | |||
+ | ==== Recording ==== | ||
+ | |||
+ | Recording is make by a program called '' | ||
+ | |||
+ | > cdisko2 | ||
+ | |||
+ | Fill in the following fields, based on the notes on the experiment wiki: | ||
+ | |||
+ | * For 8 channel recording select the " | ||
+ | |||
+ | * Experiment, Bandwidth, Channel Selection, Duration. | ||
+ | |||
+ | * Select the disk partition to record to. If required (ie you are setting up before the experiment starts), select the '' | ||
+ | |||
+ | * Click '' | ||
+ | |||
+ | To determine the correct channel selection, choose either 1-4 or 1-8 for 4 or 8 channel setups (as per the wiki). For other selections, the wiki should give the channel selection required. | ||
+ | |||
+ | The Xraid disks are " | ||
+ | |||
+ | To actually do a disk change, while recording | ||
+ | * Make sure '' | ||
+ | * Select the next (empty!) disk to record to | ||
+ | * Click '' | ||
+ | * Wait till the state changes from recording to stopped then click '' | ||
+ | |||
+ | |||
+ | The cdisko manual is at http:// | ||
+ | |||
+ | ===== ATNF Machines (22 March 2020) ===== | ||
+ | |||
+ | | | Default Recorder | ||
+ | | ATCA | cavsi1 | ||
+ | | Mopra | mpvsi1 | ||
+ | | Parkes | ||
+ | |||
+ | If remote, add " |