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information_for_astronomers:user_guide:xffts
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information_for_astronomers:user_guide:xffts [2014/11/21 10:24] bwinkel [4. Checking bandpass shapes] |
information_for_astronomers:user_guide:xffts [2014/11/21 10:56] (current) bwinkel [3. Set the correct MultiFiBa Mode and level the XFFTS] |
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| ^Mode^Channels^IF name^IF range^Bandwidth^Attenuation^Comments^ | ^Mode^Channels^IF name^IF range^Bandwidth^Attenuation^Comments^ | ||
| ^ ^ ^ ^[MHz]^[MHz]^enabled^ ^ | ^ ^ ^ ^[MHz]^[MHz]^enabled^ ^ | ||
| - | |097|8+16|VLBA IF|700-800|100|yes| | | + | |249|8+16|VLBA IF|700-800|100|yes| | |
| |185|8+16|VLBA IF|500-1000|500|yes| | | |185|8+16|VLBA IF|500-1000|500|yes| | | ||
| |128|8+16|Narrowband (SB)|100-200|100|yes| | | |128|8+16|Narrowband (SB)|100-200|100|yes| | | ||
| |033|8+16|Optical|0-2500|2500|no|used for UBB/new K-band| | |033|8+16|Optical|0-2500|2500|no|used for UBB/new K-band| | ||
| - | + | {{:information_for_astronomers:user_guide:xfftsgui.png?500|}}\\ | |
| - | {{:information_for_astronomers:xffts_leveling.png?500|}}\\ | + | |
| //Using the xfftsGUI software, it is easy to level the XFFTS and choose correct multiFiBa modes.// | //Using the xfftsGUI software, it is easy to level the XFFTS and choose correct multiFiBa modes.// | ||
| + | |||
| + | **Note, that the MultiFiBa got a very slow processing unit, so sometimes it may take a while until the requested mode is set.** | ||
| ==== 4. Checking bandpass shapes ==== | ==== 4. Checking bandpass shapes ==== | ||
| - | {{:information_for_astronomers:user_guide:fiba_097.png?400|}}{{:information_for_astronomers:user_guide:fiba_185.png?400|}}\\ | + | {{:information_for_astronomers:user_guide:fiba_249.png?400|}}{{:information_for_astronomers:user_guide:fiba_185.png?400|}}\\ |
| {{:information_for_astronomers:user_guide:fiba_128.png?400|}}{{:information_for_astronomers:user_guide:fiba_033.png?400|}}\\ | {{:information_for_astronomers:user_guide:fiba_128.png?400|}}{{:information_for_astronomers:user_guide:fiba_033.png?400|}}\\ | ||
| //The XFFTS Monitor (on the xffts vnc) should be used to check the bandpass shapes. The figures show examples for different bandwidth. At least the general shape should be similar for all receivers. Top left: VLBA-IF 100 MHz, top right: VLBA-IF 500 MHz, lower left: Narrowband-IF (SB) 100 MHz, and lower right: Optical-IF 2 GHz.// | //The XFFTS Monitor (on the xffts vnc) should be used to check the bandpass shapes. The figures show examples for different bandwidth. At least the general shape should be similar for all receivers. Top left: VLBA-IF 100 MHz, top right: VLBA-IF 500 MHz, lower left: Narrowband-IF (SB) 100 MHz, and lower right: Optical-IF 2 GHz.// | ||
information_for_astronomers/user_guide/xffts.1416561867.txt.gz · Last modified: 2014/11/21 10:24 by bwinkel
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