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hardware:dbbc.reprogram [2010/11/22 04:11] Jim Lovell created |
hardware:dbbc.reprogram [2016/09/16 16:38] Jesse Swan |
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====== Reprogramming the DBBC ====== | ====== Reprogramming the DBBC ====== | ||
- | Sometimes the DBBC needs reprogramming because channels have been dropped or spectra look strange. To do this, follow the following steps: | + | Sometimes the DBBC needs reprogramming because channels have been dropped or spectra look strange. To do this, preferable in a gap between scans, follow the following steps: |
- | - Open a VNC connection to the DBBC. At Hobart, connect to 131.217.63.248:0 <code> | + | - Open a VNC connection to the DBBC. At Hobart, connect to 131.217.63.248:0 <code>Applications --> Auscope Hobar --> VNC -->dbbchb </code> |
- | vncviewer -shared 131.217.63.248:0 | + | - You should see a window named ''DBBC2 Control DDC v104_2.exe''. Close it and then restart it from the desktop. When prompted to reconfigure press "y", it takes about 2 minutes. |
- | </code> | + | |
+ | - It is then necessary to make sure the DBBC is synchronised with the station PPS. After some time, in eremotectrl type:<code>dbbc=pps_sync</code> You should then see a row of LEDs on the DBBC flash in sync, once a second. | ||
+ | - Lastly, the Mark5 time needs synchronising. To do this, open a terminal on pcfshb and type <code>fmset</code> In the interface, type ''S'' followed by ''y'', then press the **ESC** key. | ||
+ | - In the oprin window on pcfshb, type <code>mk5=dot?</code> and check that you see ''syncerr_eq_0'' and ''FHG_on'' (or ''FHG_off''). If you see something like ''syncerr_gt_3'' then ''fmset'' may need to be run again. | ||
+ | - Also check that the maser-GPS and delay through the DBBC are the same (to within a microsec) with the ''maserdelay'' and ''clkoff'' commands which read the Agilent counters. | ||
+ | - If one or both counters are not responding to these commands, you will see an error message like this <code>ERROR sp -4 GPIB Device time-out on response c2</code> To fix this, try re-setting the counters. In the ''oprin'' window, type <code>counter</code> and try the ''clkoff'' and ''maserdelay'' commands again. |