User Tools
operations:documentation.test_tsys
This wiki is not maintained! Do not use this when setting up AuScope experiments!
Differences
This shows you the differences between two versions of the page.
| Both sides previous revision Previous revision | |||
|
operations:documentation.test_tsys [2013/09/16 23:49] David Horsley |
operations:documentation.test_tsys [2013/09/25 06:18] (current) Jim Lovell |
||
|---|---|---|---|
| Line 8: | Line 8: | ||
| Tsys measurements can be found in the ''SysMon'' group in the e-RemoteCtrl window; however, these are currently formatted strangely. To view the correct output, open an ssh connection to the fs computer and run ''monit3''. | Tsys measurements can be found in the ''SysMon'' group in the e-RemoteCtrl window; however, these are currently formatted strangely. To view the correct output, open an ssh connection to the fs computer and run ''monit3''. | ||
| + | |||
| + | ===== monit3 output ===== | ||
| + | |||
| + | Below is an annotated copy of monit3 output for Hb: | ||
| + | |||
| + | {{:operations:oper_s_x_desktop_pcfshb_1_.png|}} | ||
| + | |||
| + | Tsys is measured in each of the four DBBC input bands in two ways: | ||
| + | * Across the whole (up to) 512 MHz band without filtering, i.e. broad-band Tsys | ||
| + | * Across each of the 16 recorded bands (usually 8 or 16 MHz wide), i.e. narrow-band Tsys | ||
| + | |||
| + | The top four numbers show the broad-band Tsys values in K. In most cases IFA and IFB are the two X-band inputs and IFC and IFD are S-band. | ||
| + | |||
| + | The table below shows the Tsys for each recorded band. //A value of 0.0 means no data.// In some cases (in this example, in BBCs 1 and 8) both Upper and Lower Side-Band (USB and LSB) are recorded but in most cases only USB is recorded. | ||
| + | |||
| + | If there is interference then the broad-band Tsys values can be affected, but only the narrow band IFs with interference in their frequency range should show a bad value. In the example here, S-band is affected by interference as can be seen by the negative broadband value for IFC and very high number in BBC-13. The autocorrelation plots give a hint to where the interference is. | ||
| + | |||
| + | |||
/home/www/auscope/opswiki/data/attic/operations/documentation.test_tsys.1379375394.txt.gz · Last modified: 2013/09/16 23:49 by David Horsley
Page Tools
