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operations:documentation_ops2
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| Both sides previous revision Previous revision Next revision | Previous revision Next revision Both sides next revision | ||
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operations:documentation_ops2 [2012/08/15 02:14] Jim Lovell |
operations:documentation_ops2 [2012/08/15 04:36] Jim Lovell [Before the Observations] |
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| There are four computers at each site that run the most important items of hardware or software. They are: | There are four computers at each site that run the most important items of hardware or software. They are: | ||
| - | ^Type ^ }} | + | ^Type ^ Function ^ Computer Name ^^^ Access with... ^ |
| - | + | ||
| - | Lastly, check that the software on the timing PCs is running | + | |
| - | * [[operations:documentation.ivs.timingsw|Software on the timing PC]] | + | |
| - | Function ^ Computer Name ^^^ Access with... ^ | + | |
| ^ ^ ^ Hobart ^ Katherine ^ Yarragadee ^ ^ | ^ ^ ^ Hobart ^ Katherine ^ Yarragadee ^ ^ | ||
| |PC Field System | Linux PC that runs Field System software to control the antenna, DBBC and Mark5 | pcfshb | pcfske | pcfsyg | ssh, VNC (display 1) | | |PC Field System | Linux PC that runs Field System software to control the antenna, DBBC and Mark5 | pcfshb | pcfske | pcfsyg | ssh, VNC (display 1) | | ||
| Line 73: | Line 69: | ||
| == Check the maser == | == Check the maser == | ||
| + | * [[operations:maser_check|Hydrogen Maser check]] | ||
| + | |||
| == DBBC Configuration == | == DBBC Configuration == | ||
| + | The Digital Base-Band Converter (DBBC) takes the IF signals from the telescope and digitises them for the Mark5 recorder. The DBBC needs to be properly configured prior to an observation: | ||
| + | * [[operations:documentation.DBBCSetupIVS_v2|Configuring the DBBC]] | ||
| + | |||
| == Mark5 Recorder setup == | == Mark5 Recorder setup == | ||
| - | == Clock and delay check == | + | Next the Mark5 recorder needs to be prepared for the observations. |
| + | * [[operations:documentation.ivs.mark5_v2|Mark5B recorder setup]] | ||
| + | |||
| + | == Clock and delay check == | ||
| + | * [[operations:documentation.clock_and_delay_check|Checking clock offsets and delays]] | ||
| + | |||
| + | |||
| + | ===== Test Recording ===== | ||
| + | |||
| + | Now make a test recording using the Mark5. This is done through the Operator Input window. | ||
| + | |||
| + | <code>disk_record=on | ||
| + | mk5=dot? (Output should appear as before, but it should say FHG_on) | ||
| + | disk_record=off</code> | ||
| + | Now check the data are OK: | ||
| + | <code>scan_check</code> | ||
| + | Check the last numbers are the correct date at the start of the scan, duration, the data rate (should be 256 for the 8MHz mode, 128 for the 4 MHz mode) and 0 at the end for no problems. Then plot an autocorrelation from the data: | ||
| + | <code>postob</code> | ||
| + | The output should appear in the pcfs[hb|ke|yg] VNC session. Good data should contain quite flat bandpasses and zero phase. See [[operations:monitoring_autocor|autocorrelation spectra plots]] for an example and what problems to look out for. If there's a problem, the DBBC may need reconfiguring. | ||
| + | |||
| + | To clear the disk module, ONLY IF YOU'RE CERTAIN there is no data already on the disk! | ||
| + | <code> mk5=protect=off; mk5=reset=erase </code> | ||
| + | [[operations:monitoring_autocor|Check that the spectra are OK]]. | ||
| + | If there are dropped or strange-looking bands, the [[hardware:dbbc.reprogram|DBBC may need reprogramming]]. | ||
| + | |||
| + | |||
| == Test recording == | == Test recording == | ||
| == System Temperature (Tsys) check == | == System Temperature (Tsys) check == | ||
| Line 85: | Line 112: | ||
| - | The Digital Base-Band Converter (DBBC) takes the IF signals from the telescope and digitises them for the Mark5 recorder. The DBBC needs to be properly configured prior to an observation: | + | |
| - | * [[operations:documentation.DBBCSetupIVS|Configuring the DBBC]] | + | |
| - | Next the Mark5 recorder needs to be prepared for the observations. | + | |
| - | * [[operations:documentation.ivs.mark5|Mark5B recorder setup]] | + | |
| Lastly, check that the software on the timing PCs is running | Lastly, check that the software on the timing PCs is running | ||
| * [[operations:documentation.ivs.timingsw|Software on the timing PC]] | * [[operations:documentation.ivs.timingsw|Software on the timing PC]] | ||
/home/www/auscope/opswiki/data/pages/operations/documentation_ops2.txt · Last modified: 2012/09/18 06:18 by Jim Lovell
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