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.

--- operations:documentation.test_tsys [2013/09/16 23:49]
David Horsley
+++ operations:documentation.test_tsys [2013/09/25 06:18]
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''.
+===== 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.

AuScope VLBI Operations Wiki

User Tools

Site Tools

This wiki is not maintained! Do not use this when setting up AuScope experiments!

Differences

Page Tools