User Tools

Site Tools


lbaops:lbamay2006:v188atidnotes

Tidbinbilla notes for V188a

Config notes

  • Centre freq = 2285 MHz
  • Polarisation = RCP→IFP1, LCP-IFP2
  • 1st LO = 2000 MHz
  • mix to 160 MHz into DAS
  • so 2nd LO for USB mix = 2285 - 2000 + 160 = 445 MHz
  • DAS profile = vsop_f.pro
  • receiver configs:
    • DCC1: RCP → LNA2 (low noise path) → out (output 1 for SNT monitoring). So `SRLA2O1
    • DCC2: LCP → LNA1 (high noise diplexed path) → out (output 2 for SNT monitoring). So 'SLDA1O2

SOE

Before the track

  • Tapes
    • get labels
    • load first set
  • Block 0 rack config
    • RCP → IF1
    • LCP → IF2
    • 2nd LOs 1 and 2 to 445 MHz
  • PCFS
    • sched files
      • fix timing
      • add source commands
    • modify PRC file
      • ND control
        • copy calon, caloff, toload, tosky from v185bti (edit for correct NMC)
      • VFC patching
        • patch in S-band and set LOs to 272 MHz
      • S2 config
  • start DAS software
    • configuration ti16s_f.pro
    • adjust attenuators
  • tidvsi
    • 203.5.58.205 (admin LAN only, use jplvisitor account)
    • check time
    • vsib_record -m 3 -c xxxx -e /dev/vsib -t 32400s -o /data/removable/v188a/v188a-ti
      • configure and start
  • xplot
    • on pcfs40: /usr2/st/vlbisrv/start_vlbisrv dflt
    • on eac40: /opt/rmc/bin/xplot -rh pcfs40
  • start PCFS software
    • ssh ops@pcfs40
    • pcfsa-remote
      • S2, S-RCP, S-LCP, maintenance
    • start the schedule
    • configure VFCs with ifds and vclba

At start of track

  • NMC
    • Link
      • Build link with antenna and receiver, spacecraft 50 (VLBI), pass 0, two receivers.
    • antenna startup
      • in NMC:CTRL Connection Control:
        • AP D TRK (to show the track display)
          • Check for:
          • * delut ~ +229 ms
          • * models for encoder and position should be 3SPIG.AC1 and 3SCIB.SEM respectively
        • ap band s
        • ap move r=240
        • ap semn 3spig.ac2
        • ap semn 3scib.sem
        • ap radec 9.63649 -24.94850 (j0038-24)
        • ap mode ac2
        • ap d sts (check all green. click on antenna to see brakes status)
        • ap trk (start the antenna)
        • (make safety page)
        • ap resm trk
    • start three connection blocks
      • connection blocks → NDcontrol (Note PID)
      • connection blocks → UWVcontrol (Note PID)
      • connection blocks → APCcontrol (Note PID)
    • start the E-log TDN
      • TDNs → log?
      • move to 'logs' workspace
    • receiver config
      • us d smap
      • us d xmap
      • (double-click on dichroic to move it IN)
      • (configure with double-clicks)
      • D1 D CNF 3
      • (select SC 99 and S band and [apply])
      • make carrier 2280 MHz
      • if fail to pick up correct LNA:
        • D1 set uwv reset
        • d1 set uwv srla2o2
      • D2 D CNF 4
      • (select SC 99 and S band and [apply])
      • make carrier 2280 MHz
      • if fail to pick up correct LNA:
        • select connection “none”
        • select connection DSS43SO2
      • if still failing
        • D1 set uwv reset
        • d1 set uwv srla2o2
      • configure noise diode
        • d1 d prf 3 and d2 d prf 4
        • click on REC button in CNF windows
        • select 12.5K and frequency = on, apply
        • then enable/disable, check in each IF
        • to modulate
        • * 0.25 K, 20 Hz, 5s, enable
        • repeat for D2
  • boresight
    • manual offsets e.g:
      • ap po xel 0.1
  • PCFS
    • check atten levels
lbaops/lbamay2006/v188atidnotes.txt · Last modified: 2015/12/18 16:38 (external edit)