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CAESAR Standard Operating Procedure

Notes to start and shutdown the UCR CCN, SMPS, and SP2 instrument for the CAESAR campaign.

Aircraft IP addresses

UCR

SMPS: 192.168.84.44 (Centos)
CCN: 192.168.84.45 (Win 10 Enterprise)
SP2: 192.168.84.46 (Win 10)

NCAR

NTP Server: 192.168.84.10
Gateway: 192.168.84.2

Startup System

CCNc

The CCNc main computer for UCR to monitor instruments. This instrument should be started first. It is powered by 28 VDC and plugged into the bottom.

  1. Verify that CCN supply bottle is sufficiently full (more than 200 ml for a flight)
  2. Turn on CCN using power button on the top left.
  3. Set supersaturation program.
  4. Check that temperature stabilizes (may take a few minutes)
  5. Check that flow stabilizes (may take a few minutes)
  6. Check that CCN is draining (watch bubble move to drain bottle)
  7. Check that CCN is filling (watch bubble move from supply bottle)

SMPS

  1. Verify that valve is set to SDI inlet (handle should point toward cockpit)
  2. Turn on power strip.
  3. Plug in the sheath flow pump. This pump must go into it's dedicated outlet box 3 (one of the two sockets where the line terminates).
  4. Verify that system is powered up. Left screen should boot. Double tab Firefox button on touchscreen after boot to show gui.
  5. Verify that CPC is powered on and warms up.
  6. Verify that system is scanning voltage and the CPC concentration varies with voltage.

[!NOTE] For the CPC flow to work, the SP2 needs to be powered up and pump turned on. See below.

  1. Check that serial port and pulse output are both displaying concentration. Check below for remote setup.

SP2

  1. Verify that power strip is on.
  2. Press start button of SP2. It's behind the seat. Ask CVI operator for help if it cannot reached.
  3. Verify that windows user is logged in on the right computer.

Remote Connection from CCNc

Setup remote to SP2 computer

  1. Start Remote Desktop Connection to 192.168.84.46 and USER. (Super + Remote should bring up the remote desktop software. The values should be keyed in).
  2. Move the remote screen to Desktop 2. To do so
  • Exit full screen
  • Hit Super-Tab
  • Move to desktop 2
  1. Go into fullscreen mode again

Startup SP2

  1. Start SP2 Software
  2. Turn on SP2 Pump in Control tab
  3. Let flow stabilize to 120 ccm. Watch on first tab
  4. Start Laser in Control tab
  5. Check that all detectors are reading. Check that there is a scattering and incandescence time series.
  6. Start writing data to file

Important

If you miss this step, the SP2 will not collect data and you will be very unhappy during the debriefing.

Startup SMPS viewer on SP2 computer

  1. Open PowerShell
  2. Start SSH tunnel: ssh -L 8000:127.0.0.1:8000 [email protected] (use up-arrow so you don't have to type this).
  3. Keep this window open. You can use to check the running DAQ system on the SMPS computer. You also need it so that the gui.html works, since it polls 127.0.0.1 and this is served via port forwarding through ssh
  4. Open Edge Browser
  5. Open file gui.html in Documents folder (CTRL-O) for open file. It should bring up the three plots. Verify that they are updating.
  • Verify the CPC flow rate is 0.4 Lpm
  • Verify that both pulse and serial output are reading
  • Verify that voltage is scanning
  1. Exit fullsreen of remote.

Verify Time Synchronization

  1. Check that all times in UTC
  2. Check that timeserver is synchronized.

Linux

chronyc sources

(must run as sudo)

Compare clocks to the second.

Windows

Run these in PowerShell

  1. sc start w32time
  2. w32tm /config /update /syncfromflags:manual /manualpeerlist:192.168.84.10
  3. w32tm /resync /rediscover /nowait

Shutdown

  1. Run sudo shutdown --now in PowerShell ssh connection on SP2 computer
  2. Stop laser in control tab
  3. Stop pump in control tab
  4. Exit SP2 software
  5. Exit Edge Browser
  6. Shutdown SP2 Computer (Power Off through Windows)
  7. Shutdown power strip. Unplug sheath flow pump
  8. Run shutdown menu on CCN
  9. Power off CCNc unit
  10. Exit aircraft