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hardware:dbbc
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hardware:dbbc [2012/03/29 02:38] Stuart Weston [Linux OS Installation] |
hardware:dbbc [2012/04/10 02:11] (current) Stuart Weston |
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| * [[hardware:dbbc.calibration| DBBC Calibration procedure]] | * [[hardware:dbbc.calibration| DBBC Calibration procedure]] | ||
| * [[hardware.dbbc.wiring| DBBC back-end wiring configuration]] | * [[hardware.dbbc.wiring| DBBC back-end wiring configuration]] | ||
| + | |||
| + | * {{:hardware:dbbc-command-set-v2.3.pdf| DBBC Command Set V2.3}} | ||
| + | |||
| + | *{{:hardware:s23-tuccari.pdf|A Flexible Environment for VLBI and Space Research: Digital Receiver and Back-end}} | ||
| ====== DBBC Configuration ====== | ====== DBBC Configuration ====== | ||
| Line 16: | Line 20: | ||
| Ran "DBBC control", answered "y" to reconfiguration. Sampling modules were re-initialised and resumed processing with the 1PPS sync. | Ran "DBBC control", answered "y" to reconfiguration. Sampling modules were re-initialised and resumed processing with the 1PPS sync. | ||
| - | ====== DBBC 3rd Party Utilities & Software ====== | ||
| - | * [[hardware:dbbc.utils_sw|Utilities and Software]] | + | === DBBC Callibration === |
| - | ====== Recording Configuration DBBC And Mark5B+ ====== | + | * [[hardware:dbbc.callibration|DBBC Callibration]] |
| - | * [[hardware:dbbc.record_config_mk5b|Recording Configuration DBBC And Mark5B+]] | + | === Mapping of channels to VSI === |
| + | The DBBC has 4 channels per IF board (we have 4 IF boards), each of these channels has an upper and lower sideband. The VSI interface has 32 bit streams, for 2 bit we have Sign bit and Magnitude bit. So we can't record all channels at 2bit. The question is how these channels and bands are mapped to the VSI interface from the DBBC. | ||
| + | There are two channel mappings that are implemented in the DBBC - astro and geo. You can select these with the command "dbbcform=geo" or "dbbcform=astro". By default, it's in geodetic mode but you can query that with "dbbcform". I've included the channel mapping info we were given by Gino. With the "Mark 4 sampler output column", the code represents the base-band converter number, whether it is the Upper or Lower sideband, and whether it is the Sign or Magnitude bit. You can use the bitmasking in the mk5 to select a subset of channels and/or 1-bit sampling. For the first 4 channels with upper sidebands (dbbc01, dbbc02, dbbc03, dbbc04) at 2-bit sampling (for LBA-type observations) the mask is 0x000000ff and for 16 channels at 1-bit it is 0x55555555. | ||
| - | ====== Linux OS Installation ====== | + | {{:hardware:mapping-mk5b.pdf|Original Modes}} |
| - | * [[hardware:dbbc.linux|Linux OS Installation]] | + | {{:hardware:mapping-2-mk5b.pdf|May 2011: new test and VSI modes added}} |
| + | ====== DBBC 3rd Party Utilities & Software ====== | ||
| + | * [[hardware:dbbc.utils_sw|Utilities and Software]] | ||
| - | ==== Installation on a Compact Flash Card ==== | + | ====== Recording Configuration DBBC And Mark5B+ ====== |
| - | Use a fast (133x or better) card with 4 GB or more. We're using a SanDisk Ultra 200x 8 GB. | + | * [[hardware:dbbc.record_config_mk5b|Recording Configuration DBBC And Mark5B+]] |
| - | Mounted the CF on a Linux PC via a USB card reader. Card appears as /dev/sde1 | + | ====== OS Installation ====== |
| - | As the card is larger than 4 GB I partitioned it to match Dave's card: | + | ===== MS Windows XP ===== |
| - | <code>disk /dev/sdb: 4009 MB, 4009549824 bytes | + | * [[hardware:dbbc.windowsxp|MS Windows XP OS Installation]] |
| - | 255 heads, 63 sectors/track, 487 cylinders | + | |
| - | Units = cylinders of 16065 * 512 = 8225280 bytes | + | |
| - | Disk identifier: 0xe7cf73dd | + | |
| - | Device Boot Start End Blocks Id System | + | ===== Linux OS Installation ===== |
| - | /dev/sdb1 * 2 487 3903795 83 Linux | + | |
| - | </code> | + | |
| - | <code> | + | * [[hardware:dbbc.linux|Linux OS Installation]] |
| - | sudo fdisk /dev/sde | + | |
| - | p | + | |
| - | d (deleted FAT partition) | + | |
| - | n | + | |
| - | p | + | |
| - | 1 | + | |
| - | 2 | + | |
| - | 487 (added Linux partition) | + | |
| - | a | + | |
| - | 1 (made partition bootable) | + | |
| - | p (should now match Dave's card) | + | |
| - | w | + | |
| - | </code> | + | |
| - | Then installed an ext3 filesystem: | ||
| - | sudo mkfs.ext3 /dev/sde1 | ||
| - | Copy the image onto the CF: | + | ==== Installation on a Compact Flash Card ==== |
| - | gunzip dbbc_if.gz | + | |
| - | sudo dd if=dbbc_cf of=/dev/sde | + | |
| - | Mount the disk | + | * [[hardware.dbbc.install_on_flash_card| Installation on a Compact Flash Card]] |
| - | sudo mount /dev/sde1 /mnt/tmp | + | |
| - | Edit ''/mnt/tmp/fstab'' and change first line to read | ||
| - | /dev/sda1 / ext3 noatime,acl,user_xattr 1 1 | ||
| - | Edit ''/mnt/tmp/boot/grub/menu.lst'' and replace references to the disk partition to ''/dev/sda1'': | + | ====== DBBC Power Measurement ====== |
| - | <code> | + | * [[hardware.dbbc.power_measure| DBBC Power Measurement]] |
| - | # Modified by YaST2. Last modification on Fri May 14 13:24:28 UTC 2010 | + | |
| - | default 0 | + | |
| - | timeout 8 | + | |
| - | gfxmenu (hd0,0)/boot/message | + | |
| - | ##YaST - activate | + | |
| - | ###Don't change this comment - YaST2 identifier: Original name: linux### | + | ====== Commercial Boards used in the DBBC ===== |
| - | title openSUSE 10.3 | + | |
| - | root (hd0,0) | + | |
| - | kernel /boot/vmlinuz-2.6.22.5-31-default root=/dev/sda1 vga=0x31a splash=silent showopts | + | |
| - | initrd /boot/initrd-2.6.22.5-31-default | + | |
| - | ###Don't change this comment - YaST2 identifier: Original name: failsafe### | + | * [[hardware.dbbc.boards| DBBC commercial boards used]] |
| - | title Failsafe -- openSUSE 10.3 | + | |
| - | root (hd0,0) | + | |
| - | kernel /boot/vmlinuz-2.6.22.5-31-default root=/dev/sda1 vga=normal showopts ide=nodma apm=off acpi=off noresume nosmp noapic maxcpus=0 edd=off 3 | + | |
| - | initrd /boot/initrd-2.6.22.5-31-default | + | |
| - | </code> | + | |
| - | Unmount, eject and boot on DBBC! | + | ====== Related Links ===== |
| - | === 4 GB card installation === | + | {{http://www.noto.ira.inaf.it/index.php/project|DBBC project home page}} |
| - | Tim has been having trouble getting the 8 GB card to boot so I got a 4 GB SanDisk Ultra 200x card. | + | {{https://deki.mpifr-bonn.mpg.de/Cooperations/dBBC|Bonn DBBC Wiki}} |
| - | Partition table initially showed | + | === TOW 2011 === |
| - | <code>4011 MB, 4011614208 cylinders | + | {{ftp://ivscc.gsfc.nasa.gov/pub/TOW/tow2011/notebook/Tuccari.Sem.pdf|DBBC Overview}} |
| - | 128 heads, 63 cylinders/track, 971 cylinders | + | |
| - | units = cylinders of 8064 * 512 = 4128768 bytes</code> | + | |
| - | so in the "extra functionality" mode of fdisk I changed | + | === DBBC3 === |
| - | number of cylinders to 487 | + | |
| - | and number of heads to 255 | + | |
| - | + | ||
| - | partition table then could be made to match Dave's. | + | |
| - | + | ||
| - | ====== DBBC Power Measurement ====== | + | |
| - | + | ||
| - | * [[hardware.dbbc.power_measure| DBBC Power Measurement]] | + | |
| - | + | ||
| - | ====== Commercial Boards used in the DBBC ===== | + | |
| - | + | ||
| - | * [[hardware.dbbc.boards| DBBC commercial boards used]] | + | |
| + | {{http://www.oan.es/gm2012/pdf/oral_id_130.pdf|DBBC3 - A full digital implementation of the VLBI2010 backend}} | ||
/home/www/auscope/opswiki/data/attic/hardware/dbbc.1332988706.txt.gz · Last modified: 2012/03/29 02:38 by Stuart Weston
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