APPENDIX C: KAPPABRIDGE OPERATION PROCEDURES

1. Turn on the KLY-2 power switch.
2. Set "range selector" to 5. Needles in zero setting windows move according to position of the sensor
3. Zero setting: Adjust the Im (Imaginary component) knob until the needle points to zero. Adjust the Re (Real component) knob located on the sensor until the needle points to zero. When adjusting Re, you may need to first select a higher range and then work your way down to Range 5.
4. Standard calibration: It's recommended that the bridge be calibrated every day before use. For calibration we use the standard found in the black briefcase. Zero the bridge. Set the range R corresponding to the range indicated on the standard. Measure the standard (see below). If the value indicated on the display data is higher than the standard value, turn the potentiometer CALIBRATION counterclockwise. If lower, turn potentiometer clockwise. Repeat until both values coincide.
5. Phase calibration: As documented on Leg 152, there is a procedure for calibrating the phase between the imaginary component (Im) and the real component (Re). The imaginary component should not influence the real component unless the samples are electric conductive. This should not need to be done frequently.
6. Move the Im to zero.
7. Move the Re to zero.
8. Move the Im to one side of zero.
9. Find zero for Re by adjusting the phase pot.
10. Continue adjusting the components and pot until Im has only a small or no influence on the Re. It may take several turns. This procedure will prevent overadjusting the coil on the sensor and breaking it.

1. Set range selector to 5 (if specific range not previously known).
2. Be sure both the Im and Re are zeroed.
3. If the bridge is in the status WAIT, wait until it converts to the status READY by automatic zeroing.
4. Press the button START/RESET, the bridge enters the status MEASURE. Insert the specimen into the pick-up coil as quickly as possible.
5. After the beep sounds, remove the specimen from the pick-up coil.
6. After a few seconds the bridge enters the status HALT. If blinking 1999 appears in the display DATA, the bridge is overloaded and the measurement must be repeated in a higher range. If the display does not blink, decide whether the correct measuring range has been selected (range correction factors taped to the bridge) and adjust accordingly.
7. To take another measurement, press the START/RESET button, wait for READY.

A computer interface program for the Kappabridge is currently installed on both the small PC and the Compaq laptop in the laboratory. Unfortunately, automatic data input is not available due to a communication problem between the instrument and the computer. A new interface box may need to be installed. For the meantime, data must be input manually. Before starting the program, make sure the Panasonic printer (sitting on top of DTech) is connected and set as the default printer.

1. To start the program, click on the MS-DOS Kly-2 shortcut icon on the desktop (C:\KP\KLY2.EXE)
2. Manual input only?...choose Y.
3. Operator Name, enter whatever name you want
4. Change the current set of orientation factors, etc.?...choose N.
5. Output on disk?...choose Y.
6. Specify if new [1] or existing file [2].
7. Type the output file path, for example "a:" for drive A, or "c:\data", or whatever you want.
8. Type the output file name, one file for each core is fine. For example, "999B-1H."
9. Specimen name. Enter the specimen name as follows: "core, section, top interval." For example, "1H,3,123" for a sample from Core 1H, Section 3, 123–125 cm. The commas are important because another program is used to make a comma-delimited ASCII text file of the data.
10. For locality name, enter the Hole, "999B."
11. New data or <CR>, hit Return.
12. Sampling angles theta and psi (more commonly known as declination and inclination). Caution: When entering this data, be aware of how the samples were taken. Simply pressing Return will enter in theta and psi values of 180,90 since samples are collected from the working half of the split core. However, if you have already accounted for this by drawing on the cube the three reference arrows for the AMS rotation scheme (see diagram taped to wall and/or sensor), then enter 0,90. If the sample is oriented with the tensor tool, you can enter in the correct declination of the sample instead of 0.
13. Tectonic systems T1 and T2 are asking for a bedding correction, and a lineation correction. Hit Return for both T1 and T2.
14. Kill the data?...N (unless you made a mistake in the above, then choose Y).
15. Select the measuring range (any range lower than 5 will not likely work due to the noisy surroundings). After selecting range, hit Return.
16. Begin measuring using the 15 sample positions.
17. After entering data for Position 15, hit Return. The program will automatically make the calculations and display the data. If everything looks good, choose [1] Print and then either quit the program or continue making measurements. The files are saved as "filename.KL2" ("999B-1H") in the directory you specified earlier.

The following directions will describe how to properly format the .KL2 files into .CAL files, and then finally into .TXT format, which can be imported into a spreadsheet.

First, open "Amskly.exe" found in the "Kly2" folder on the small PC hard drive (c:\Kly2\Amskly.exe). The program is menu driven, moving from choice to choice with the arrow keys, then hitting return. Choose Import and then Set Directory to where your files are. Then, choose to Read File and a list of all your .KL2 files will pop up. Select one by moving the arrow key to highlight it and hit return. Next, Convert File. This will make a "filename.CAL" file. After you have converted all of your .KL2 files to .CAL files, hit ESC to get back to the main screen.

Now you can analyze and plot the AMS data and make an ASCII text file. First choose Read File and select the .CAL file you want and hit return. Next, choose Define Job (this will allow only certain subgroups of specimens in a file to be read). You are asked how to define the job. Enter 1 for sites. Then type the Hole from which your samples came (that you entered during the measurement program) and press Return. For example, "999B". Press Return. Now you can look at the data, plot the principal axes, flinn plots, and so on. Ask one of the marine computer specialists for help if you have trouble printing plots.

The last step is to export the ASCII file. Select ASCII Output and hit Return. You are asked to type the name of the file. Type the filename and ".txt" extension (i.e., "999B-1H.txt"). The text file is set up as follows:

Core, section, top interval, kmax declination, kmax inclination, kint dec, kint incl, kmin dec, kmin incl, kmax (1 x 10^–6 SI), kint, kmin

For example: 1H,3,123,300,0,210,0,120,90,435.9,420.1,418.7

The files are easily imported into Excel or another spreadsheet.