CTD Post-Cast Tasks
1). Deck Pressure - once the CTD is on-deck and secured, record the deck pressure then stop the data acquisition (Real-TimeData/Stop).
2). If there are any extra markers that need to be deleted, edit the .mrk file before hitting <Ctrl><Alt>B.
3). Press <CTRL><ALT>-B to backup the data files. This runs ctdbackup.exe, our in-house Windows program that zips and copies all files to backup media. A confirmation box will appear if the settings are correct (do not close it before the DOS windows are gone). If the file numbering is off, correct it in the “Cast Number” box and click [Zip Backup]. This should correct the numbering and archive the files. This may also indicate that you mis-numbered the cast – if so, cancel the backup program, edit the filenames (rename the data file but do not edit internally), and press <Ctrl><Alt>B again.
This routine, combined with the CTDatDepth event (from the event log) generates the electronic sample log (CESL) base file. Also, the .hdr, .nav, & .bl files are copied to the data server mrk dir.
4). Turn off the deck unit and unplug the ISUS battery.
5). Load the sample log base file, check for correctness, change the O2 case, salt case, and nutrient rack to current. Flag duplicate bottles, label bottles with “Salt Only” or “Skip” labels. Extra bottles that are tripped at a unique depth have all samples drawn from them (chls if <=200m).
6). Draw O2s, phyto, & other samples - purge the MnCl & NaOH O2 reagents (wear eye protection). Draw O2s first, DICs then phyto from second (non-dup) depth, help with any other samples still needing to be drawn.
After sample drawing
7). Print three plots by clicking the print icon on each of the three data plots at the bottom of the seasave screen. Switch the orientation to Portrait then print by selecting OK. Be sure the HP color laser printer is selected.
4). After printing the plots, select the main (cast) plot and change the Line & Sta & Cast # to the next station. Highlight “Sta LL.L SS.S Cast ###” and <Ctrl>C to copy then right click on each data plot, select Modify – plot setup, highlight the old plot title and <Ctrl>V paste the new title from the clipboard.
5). Run ZTree.exe, hit <Enter> twice, tag (T) the .mrk & .prn files and print (<Ctrl>P, <Enter>).
6). Tag the .hex (or .dat), .bl, .nav, & .con files (6 files tagged total), <CTRL>M to move them to the archive dir, hit <ENTER>, Up arrow, select the c:\YYMM\archived dir, <Enter> then <Enter> to confirm. They should now be in the archived dir. Be sure to leave the YYMMDoNotMove.con file in the YYYMM dir. <Q>, <Y> to close ZTree.
7). Collect the printouts, plots and console ops form – double-check the .mrk printout numbers match the bottles tripped on the console ops; if the mrk file does not match the bottles tripped then correct it using the Ztree Edit function or ultraedit. Hole-punch and bind using a post-it tag to flag the station. Format is usually: Line.Sta, Sta Num, Date, Time. .
6). Service the CTD by reattaching the pump hoses and flush for several seconds with DI. Cap the PAR. Hose off the carousel with fresh water. Tie it down if necessary.
Other Duties of the CTD Primary Tech
• CESL generates chl base files, O2 box files for sample analysis so the CODES daily routine is not required to generate base files. CODES can be used to generate Surfer preliminary maps from mrk files.
• CTD data should be backed-up daily to the data server by running Filesync or ZTree.
• The CTD backup (<Ctrl><Alt>B) program automatically copies the .hdr, .nav, & .bl files to the data server mrk dir for use by Flog.
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