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SHMSL Quick Start Guide

• Introduction
  • Getting Started
• Making a Measurement
• Uploading Data to LIMS
• QE Pro Calibration

Introduction

The SHMSL is a multisensor logger that makes (Section Half Multisensor Logger) makes point-source, contact measurements of magnetic susceptibility and color reflectance on the split surface of cores. It also archives the laser profile of each section's surface for use in other applications such as routines to cull data from other loggers collected from voids; as well as a surface laser profile. Split core surfaces, predominantly from the archive half, are measured.

Getting Started

1. Open

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1. MUT and login using ship credentials. For more information see the "Uploading Data to LIMS" section below.
2. Double-click the IMS icon on the desktop (Figure 1). IMS

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1. initialize's the instruments and checks the movement of both Exlar actuators. Once initialized, the logger is ready to measure a section.

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Figure 1

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.- IMS Icon

Making a Measurement

NOTE: If you would like to change measurement parameters, please contact the PP technician.

1. Place the archive section in the core tray with the . Make sure the section is oriented blue endcap up, and is flush against the benchmark (Figure 2).
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   Figure 2.- Benchmark
2. Adjust the section so that it is as flat as possible with respect to the plane of parallel to the benchmark.
3. Click the Start button to open the START. The Section Information screen .
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   is displayed (Figure 3).  Figure 3.- Section Information Screen
4. Place the cursor in the SCAN text field (center of Figure 3) and scan the section label, the information automatically fills for Expedition, Site, Hole, and so on. 
5. Enter Comments (field is optional). 
6. Missing Top: If a sample taken at top of section (material is missing), position the section half all the way up to the benchmark. Enter missing length, software will automatically adjust. SAMPLE ID and LIMS ID automatically fills. These ID tags contain information on expedition, site, hole, core, section number and length.

Additional entry field options are the LIMS and MANUAL tags.
Optional entry fields include:
Comment: Notes and observations
Missing Top: Used if material is missing or was sampled at the top of the section. If used, the software automatically adjusts the offset.
Exclude Intervals:

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Enter section intervals to be excluded

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, like foam-voids. Excluded intervals will be not be measured.
Measure Control Set: Measurement control for the

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spectrometer. This option is used exclusively by the PP technician.

1. Click MEASURE
2. The sensor assemby moves to the bottom of section. A surface profile, taken by the laser, will be acquired (Figure 4). 
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Figure 4.- Laser Profile

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NOTE: If the system prompts for a QE Pro calibration (Figure 5) please refer to the calibration instructions (shown below).
Figure 5.- Asking for calibration window

1. After profile completion, a pop-up is displayed, containing the measured section length is displayed. Confirm this length visually (Figure 5, below). Adjust 6) and adjust if needed. Apply Glad Wrap to the surface of sediment cores. Click GO!!!
   IMPORTANT!!!  Glad rap must have a good seal to the surface of the core; any bubbles or wrinkles will affect the measurement. Any mud that gets inside the integration sphere will ruin it!!!Click GO!
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   Figure 5. Final Sample Preparation
   
2. The measurement sequence begins. For efficiency, measurements begin at the bottom of the section and move upcore. Results are displayed during acquisition on instrument graphs on screen as shown in Figure 6, below.
   Note that the QE Pro has several tabs that display different views of the color reflectance data. Tabs can be changed during the measurement sequence.
3. After the section has been measured, the logger takes measurements of the MS2K and white standards as verification. 

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Figure 6. Data Acquisition Screen

Data Storage and Format

C:\data\IN

• Section half L* a* b* and XYZ data
• MS2K check standard result
• MS2K (MSPOINT) data file
• QE Pro white check standard result
• Laser profile pointer file

C:\AUX_DATA\PROFILE

• Laser profile data

C:\AUX_DATA\RSC\CALIB

• White and Dark calibration spectral data per wavelength (380–900 in 2 nm steps)

C:\AUX_DATA\RSC\CNTRL

• Raw spectra and normalized (% color reflectance) spectral data per wavelength (380–900 in 2 nm steps) for the white check standard at the end of a run

C:\AUX_DATA\RSC\RUN

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2. Using the pre-cut GLAD wrap, cover the section surface (Figure 7). Click >>>GO to begin MS and color reflectance measurements.

Figure 6.- Confirmation length window
NOTE: Wrap MUST have a proper seal. Any bubbles or wrinkles WILL affect measurements. Sediment contamination within the sensors WILL cause DAMAGE. Figure 7.- Final Core Preparation

1. MS and Color reflectance data graphs are displayed in real time during acquisition (Figure 8.)

NOTE: the QE Pro has indindividual display tabs for each component of the color reflectance. Display tabs can be toggled back and forth.
Figure 8.- Main window with measurement profiles

1. After data acquisition, measurements of MSP (Magnetic Susceptibility Point) and white standards are performed. Placement of the sensors to their respective standard is extremely important. For the MSP measurement, this corresponds to the insertition of the sensor into the standard.

NOTE: MSP data can be drift corrected if necessary. Please contact the PP technician for further instructions.
Figure 9.- Correct position of sensor on the top of the standards

1. All instrument data (laser profile, MSP, color reflactance, and standards) are stored in C:\DATA\IN.
2. Data is automatically uploaded to the LIMS database, and is available to view on LORE and LIVE. If data is not instantly visible, please contact the PP technician.
3. Upon upload, data is moved to C:\DATA\Archive. If upload is unsuccessful, data is automatically moved to C:\DATA\Error. Please contact the PP technician if this occurs.

Uploading Data to LIMS

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QE Pro Calibration

1.

If

The Instrument Calibration screen appears automatically if the QE Pro is out of calibration,

the Instrument Calibration screen will appear

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2.	Click

the

Calibrate Instruments

button

to begin the calibration process, starting with the White calibration. The

logger moves the

QE Pro integrating sphere lowers over the

white

QE Pro calibration standard

and lowers it

until

it touches. It will take some preliminary measurements to establish the integrating time based on an 80% saturation level of the total response. These measurements take about 0.30–0.55 seconds for the current light and detector configuration. (Figure 9, below)
Note: If integration times increase to more than 0.55 seconds, contact the PP tech. The halogen bulb or LED may need replacing.

3.

Click Accept for the suggested integration time. The logger will then take 20 measurements of the white standard at the automatic integration time.
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Figure 9. White Calibration
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Figure 10. Integration Time

contact. The Integration Time should be less than 0.55 seconds (Figure 12). Figure 12.- White Calibration Note: If the integration time increases, contact the PP technician.
3.	Click Accept.
4.	After the

white measurements are completed Figure 11.

White Calibration is complete, the

logger will raise the integrating sphere, position it over the dark standard, and lower it on the dark standard. The shutters on the light sources will close and the dark measurement will acquire 20 measurements, as above. When finished, Click Accept!
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Dark Calibration will begin (Figure 13). The difference between the calibration values of Dark Pixels and the Spectral Mean should be less than 100. If this difference is higher or if negative values appear on the spectrum, please contact the PP technician. When finished click Accept. Figure 13.- Dark Calibration

5.

Figure 12 shows the normalization of spectra that will occur with the just-acquired calibration.
Note: a calibration may be run at any time outside of the mandatory calibration period.

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Figure 12. Calibration Normalization Factor

Archived Versions

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