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lbaops:tidnotes:antennastartup [2007/03/14 14:07]
jlovell
lbaops:tidnotes:antennastartup [2015/12/18 16:39] (current)
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-====== Antenna Startup\\ ====== +====== Antenna Startup ====== 
-\\ + 
-The antenna pointing ​files, subreflector rotation etc are different depending on the observation. Below is an example.\ +The antenna pointing ​models, subreflector rotation, first source coordinates ​etc are different depending on the observation. Below is an example. 
-\ + 
-  *  NMC\\ +  *  NMC 
-    *  Link\\ +    *  Link 
-      *  Build link with antenna and receiver, spacecraft 50 (VLBI), pass 0, two receivers.\\ +      *  Build link with antenna and receiver, spacecraft 50 (VLBI), pass 0, two receivers. 
-    *  antenna startup\\ +    *  antenna startup 
-      *  in NMC:CTRL Connection Control:\\ +      *  in NMC:CTRL Connection Control: 
-        *  AP D TRK  (to show the track display)\\ +        *  AP D TRK  (to show the track display) 
-          *  Check for:\\ +          *  Check for: 
-          * * delut ~ +229 ms\\ +          * * delut ~ +229 ms 
-          * * models for encoder and position should be 3SPIG.AC1 and 3SCIB.SEM respectively\\ +          * * models for encoder and position should be 3SPIG.AC1 and 3SCIB.SEM respectively 
-        *  ap band s\\ +        *  ap band s 
-        *  ap move r=240\\ +        *  ap move r=240 
-        *  ap semn 3spig.ac2\\ +        *  ap semn 3spig.ac2 
-        *  ap semn 3scib.sem\\ +        *  ap semn 3scib.sem 
-        *  ap radec  9.63649 -24.94850\\ +        *  ap radec  9.63649 -24.94850 
-        *  ap mode ac2\\ +        *  ap mode ac2 
-        *  ap d sts (check all green. click on antenna to see brakes status)\\ +        *  ap d sts (check all green. click on antenna to see brakes status) 
-        *  ap trk (start the antenna)\\ +        *  ap trk (start the antenna) 
-        *  (make safety page)\\ +        *  (make safety page) 
-        *  ap resm trk\\ +        *  ap resm trk 
-    *  start three connection blocks\\ +    *  start three connection blocks 
-      *  connection blocks -> APCcontrol (Note PID)\\ +      *  connection blocks -> APCcontrol (Note PID) 
-    *  start the E-log TDN\\ +    *  start the E-log TDN 
-      *  TDNs -> ** log? **\\ +      *  TDNs -> ** log? ** 
-      *  move to '​logs'​ workspace\\ +      *  move to '​logs'​ workspace 
-    *  receiver config\\ +    *  receiver config 
-        *  us d smap\\ +        *  us d smap 
-        *  us d xmap\\ +        *  us d xmap 
-        *  (double-click on dichroic to move it IN)\\ +        *  (double-click on dichroic to move it IN) 
-        *  (configure with double-clicks)\\ +        *  (configure with double-clicks) 
-        *  D1 D CNF 3\\ +        *  D1 D CNF 3 
-        *  (select SC 99 and S band and [apply])\\ +        *  (select SC 99 and S band and [apply]) 
-        *  make carrier 2280 MHz\\ +        *  make carrier 2280 MHz 
-        *  if fail to pick up correct LNA:\\ +        *  if fail to pick up correct LNA: 
-          *  D1 set uwv reset\\ +          *  D1 set uwv reset 
-          *  d1 set uwv srla2o2\\ +          *  d1 set uwv srla2o2 
-        *  D2 D CNF 4\\ +        *  D2 D CNF 4 
-        *  (select SC 99 and S band and [apply])\\ +        *  (select SC 99 and S band and [apply]) 
-        *  make carrier 2280 MHz\\ +        *  make carrier 2280 MHz 
-        *  if fail to pick up correct LNA:\\ +        *  if fail to pick up correct LNA: 
-          *  select connection "​none"​\\ +          *  select connection "​none"​ 
-          *  select connection DSS43SO2\\ +          *  select connection DSS43SO2 
-        *  if still failing\\ +        *  if still failing 
-          *  D1 set uwv reset\\ +          *  D1 set uwv reset 
-          *  d1 set uwv srla2o2\\ +          *  d1 set uwv srla2o2 
-        *  configure noise diode\\ +        *  configure noise diode 
-          *  d1 d prf 3 and d2 d prf 4\\ +          *  d1 d prf 3 and d2 d prf 4 
-          *  click on REC button in CNF windows\\ +          *  click on REC button in CNF windows 
-          *  select 12.5K and frequency = on, apply\\ +          *  select 12.5K and frequency = on, apply 
-          *  then enable/​disable,​ check in each IF\\ +          *  then enable/​disable,​ check in each IF 
-          *  to modulate\\ +          *  to modulate 
-          * * 0.25 K, 20 Hz, 5s, enable\\ +          * * 0.25 K, 20 Hz, 5s, enable 
-          *  repeat for D2\\ +          *  repeat for D2 
-\\ + 
-  ​* ​ boresight\\ +===== Boresighting ===== 
-    ​* ​ manual ​offsets ​e.g:\\ +Manual boresighting is probably the quickest method. You will need to enter offset commands at the NMC and observe the effect with xplot or the squarelaw sampler plot. The idea is to move the antenna to approx the positive half-power point in cross-El, observe the amplitude, then move to the negative half-power point and observe the level again. If the levels are not the same, move closer or further away until they ballance. The offset position is then the average of the two values. This is then repeated for the Elevation ​offsets. ​The NMC command for moving to an offset is
-      ​* ​ ap po xel 0.1\\ +  ap po <​axis>​ <​offset>​ 
-  ​ PCFS and DAS\\ +where ''<​axis>''​ is ''​xel''​ or ''​el''​ for cross-el and El respectively,​ ''<​offset>''​ is the offset in milli-degrees
-    ​* ​ check atten levels+ 
 + 
 +=====  Setting levels ​ ===== 
 +Once the receivers are configured correctly, check the levels of the PCFS (with ''​vread''​) ​and on the DAS. If necessary, adjust the attenuation to bring them within range. 
lbaops/tidnotes/antennastartup.txt · Last modified: 2015/12/18 16:39 (external edit)