SEABIRD HOCR Hyperspectral Ocean Color Radiometer User Manual

SEABIRD HOCR Hyperspectral Ocean Color Radiometer User Manual

seabird.com

Section 1 Safety information

Please read this entire manual before this equipment is unpacked, set up, or operated.
Pay attention to all danger, warning, and caution statements. Failure to do so could result in serious injury to the operator or damage to the equipment.

1.1 Hazard information

1.2 Equipment labels

Read all labels and tags attached to the equipment. Personal injury or damage to the equipment could occur if not observed. A symbol on the equipment is referenced in the manual with a precautionary statement.

Electrical equipment marked with this symbol may not be disposed of in European domestic or public disposal systems. Return old or end-of-life equipment to the manufacturer at no charge to the user.

Safety information

EFUP: Hazardous material exists over the threshold of GB/T 26572.2011. The number in the center of the symbol is the Environmentally Friendly Use Period as specified by SJ/T 11364-2014, China’s marking for the Restriction of the Use of Hazardous Substances in Electrical and Electronic Products.
This product should be recycled after its environmentally friendly use period.

Section 2 OCR quick start guide

This quick start guide and user manual applies to the Ocean Color Radiometers.
What’s in the box:

• the sensor
• a dummy connector and lock collar
• a plastic protective cover attached to the optical face
• a CD with calibration files, software, and user manuals
• optional: Bio-shutter, attached to the sensor. The protective cap for the optics is not attached.

Table 1 Manufacturer-supplied software

Use the .sip file on the CD to use the SatView and SatCon software.

1. Install the software on a PC, connect the OCR, and start SatView.

2. Supply power to the sensor.

3. Move the .sip, .cal, or .tdf file to the main window of SatView and enter configuration settings for the sensor. Refer to Verify sensor functionality on page 11 for details.

4. Make sure that the sensor collects data.

5. Deploy the sensor.

6. Immediately after the sensor is recovered from a deployment:
   a. Turn off the sensor.
   b. Flush the sensor with fresh water.
   c. Keep the sensor out of direct sunlight between deployments.

7. Store the sensor. Refer to General maintenance on page 15 for details.

Section 3 Overview and specifications

The Hyperspectral Ocean Color Radiometer, or HOCR, measures apparent optical properties in the ocean. The sensor collects up to 255 channels of optical data in wavelengths from 350 to 800 nm. The HOCR can be set up to operate in a network or as a network controller for other sensors. The sensor operates via an RS232 or RS422 interface or an RS485 if the user operates the sensor in a SatNet network environment.

3.1 Mechanical

3.1.1 Dimensions

Figure 1 HOCR (ICSW) Ed

Figure 2 HOCR (R08W) Lu

3.1.2 Standard bulkhead connector functions

3.2 Electrical

3.3 Analytical

3.3.1 Radiance

3.3.2 Irradiance

Section 4 Operation

4.1 Verify sensor functionality

Make sure that the sensor operates correctly before further setup and deployment.

1. Install the software on the PC. The software is available from the CD that ships with the sensor or from the manufacturer’s web site.

2. Start the software.

3. Supply power to the sensor.

4. Move (“drag”) the .sip, .cal, or .tdf file to the main window of the SatView software from the supplied CD or from PC if it has been copied there.

5. In the new window that shows, enter configurations for the sensor:
   a. Enter a name for the sensor at “Instrument Package Name”. (This is auto- filled if
   a .sip file was moved in step 4.)
   b. Put a check in the box next to “Auto Read From:” and select the applicable COM port.
   c. Select the “Baud Rate.” The default is 57600.
   d. Push OK.
   A green border shows around the sensor icon in the software. The sensor collects data.

6. Select (highlight) the sensor with the green border, then right-click and select Control Panel. The “Frames Read” value increments.

7. Double-click on any or all of the views in the “View List” area. Move each window as desired to see real-time data.

8. Go to the Log menu, then Options.
   a. In the “File Naming Mode” select AUTO CAST. The software automatically names data files with AA, AB, AC, etc.
   b. Select the … at “Log Directory” to find or make a folder for saved data.
   c. Put a check in “Log Duration” and select the amount of time for the PC to save
   data.
   d. Push OK.

9. Push Start Logging in the main window.
   The “Ready” and “Active” status indicators are green and the “Log Time” counter increases. Note that the data is saved in binary format. Use the manufacturer’s SatCon software to convert and process this data.

10. To save the settings from the session, select the File menu, then Save As… and find or make a file name and location.
    The software saves the settings from this session so it is not necessary to go through the setup steps again. The software will start when the user double- clicks the saved xxx.sat file.

11. Turn off the power supply to stop the sensor.

4.2 Set up for autonomous operation

The standard mode of operation for OCR sensors is autonomous operation and continuous data collection. It is typical to use the SatView software to set up and monitor data collection.

1. If necessary, start the software.

2. Make sure that the sensor is connected to a power source and the PC.

3. Open the xxx.sat session file that was saved in the previous section, Verify sensor functionality on page 11.

4. Go to the Log menu, then Options:
   a. Select an option in the “File Naming Mode” dropdown.
   • USER DEFINED—the user names the data file.
   • AUTO CAST—the software names files that increment “AA,” “AB,” “AC,” etc.
   • TIME STAMP—the software names files with YYYY-DDD-HHMMSS.raw, which is year, day of the year, hours, minutes, seconds.
   • SQM—SeaWiFS-specific name options.
   b. Determine the location to which the data file is saved on the PC in the “Log Directory” area.
   c. Put a check in the box at “Log Duration” and enter the period of time the sensor will collect data.
   d. Put a check in the box at “Log Interval” and enter the period of time the sensor will stop between data collection cycles.
   Note that the sensor will repeat the cycle of data collection and low power until the user pushes Stop Logging. Each data collection cycle will be in a separate file.
   e. Put a check in the box at “Write PCZDA Time Stamps…” so that the software will write a time stamp to the file every second. It has the format $PCZDA,132430.00,03,08,1999,, which is 1:24:30 pm, 03 August 1999.
   f. Put a check in the box at “Use GPS Data…” so that the software will use GPS data if such a sensor is attached.

5. Push OK.

6. Optional: Go to the Log menu then Station Setup. Enter information as needed. It will show in the header of the data file.

7. Optional: Select the sensor and right-click to see the Ancillary, Optical, and Spectral views.

4.3 Verify or change sensor settings

Use a terminal program such as Tera Term to look at and, if necessary, change the settings in the sensor prior to a deployment. The manufacturer has set up the sensor with default values listed in Configuration commands below.

1. Make sure that the sensor is connected to the PC that has a terminal program installed.

2. Start the terminal program.

3. Select “Serial” then push OK.

4. Select Setup, then Serial Port.

5. Change the “Baud rate” to 57600. Other settings do not need to be changed:
   • Data: 8 bit
   • Parity: none
   • Stop: 1 bit
   • Flow control: none

6. Push OK.

7. Supply power to the sensor.
   Data shows in the terminal window.

8. To stop the data collection, enter Ctrl C.
   • If the sensor is in autonomous mode, the [Auto]$ prompt shows.
   • If the sensor is in a network, the [Remote: 050]$ prompt shows. The three characters are the network address of the remote sensor.The sensor is ready to accept commands.

9. The settings stored in the sensor by the manufacturer should not need to be changed. Look at the value of a specific setting, for example, baud rate: At the [Auto] $ prompt, type show tel baud then push Enter to see the baud rate that is stored in the sensor.

10. To save data on the PC:
    a. Select File, then Log…
    b. Select the directory in which to save the file, and a file name.
    c. Push Save.

11. To start data collection again, type exit.

12. To stop data collection, select File, then Disconnect.
    The terminal session ends.

4.4 HOCR data format

The standard data from the sensor is in binary format, and is defined by the Technical Definition File (.tdf) from the manufacturer and whether the sensor measures radiance or irradiance.

Operation

Note: the optical channels lambda1 to n are discrete output channels.

4.5 Temperature correction
The photodiode array is temperature dependent and may show a different value during a deployment than at the time of calibration. Use the SPECTEMP command to see the temperature during a deployment.

Section 5 General maintenance

1. After each cast or exposure to natural water, flush the sensor with clean fresh water.
2. Use soapy water to clean any grease or oil on the optical face of the sensor. It is made of plastic and can be damaged if an abrasive cleaner is used.
3. Dry the sensor with a clean soft cloth.
4. Install the dummy plug and lock collar to protect the bulkhead connector.
5. Install the protective cap on the optical face.

5.1 Clean bulkhead connectors

Examine, clean, and lubricate bulkhead connectors at regular intervals. Connectors that are not lubricated increase the damage to the rubber that seals the connector contacts.
The incorrect lubricant will cause the failure of the bulkhead connector.

1. Apply isopropyl alcohol (IPA) as a spray or with a nylon brush or lint-free swab or wipes to clean the contacts.

2. Flush with additional IPA.

3. Shake the socket ends and wipe the pins of the connectors to remove the IPA.

4. Blow air into the sockets and on the pins to make sure they are dry.

5. Use a flashlight and a magnifying glass to look for:

6. Use a silicone-based lubricant on each of the contacts of the bulkhead connector.
   The manufacturer recommends any of the products listed below.
   • 3M™ Spray Silicone Lubricant (3M ID# 62-4678-4930-3). Make sure to let it dry.
   • Dow Corning Molykote® III Compound (DC III)
   • Dow Corning High Vacuum Grease® (DC 976 V)
   • Dow Corning 4 Electrical Insulating Compound® (DC 4)
   • Dow Corning Molykote 44 High Temperature Grease® (DC 44)Use a finger to put a small quantity (approximately 1 cm in diameter) of silicone grease on the socket end of the connector and push as much of the lubricant as possible into each socket. Do not use too much lubricant, as that will prevent a good seal.

7. Connect the connectors.

8. Use a lint-free wipe to clean any unwanted lubricant from the sides of the connectors.

Section 6 Optional equipment: Bioshutter

The bioshutter works to decrease biofouling on the optical faces of the multispectral (504, 507, and 504 UV) and hyperspectral sensors, which can help to increase deployment time. The bioshutter uses a separate power supply to operate and is typically connected to the optical sensor with a Y-cable (supplied by the manufacturer. The basic operation sequence:

• The shutter opens when power is supplied to the bioshutter, and the device enters a low power mode.
• During the low power mode, the internal backup is charged.
• When power is removed from the bioshutter, the internal power supply closes the shutter.

This mode of operation works well for moored deployments. The bioshutter operates independently of the optical sensor and the controller, as long as there is enough time to charge the internal power supply (approximately 30 seconds).

6.1 Mechanical specifications

6.1.1 Bulkhead connector

6.1.2 Dimensions

Figure 3 Standard bioshutter dimensions

Figure 4 OCR 504 shutter

Figure 5 HyperOCR shutter

6.2 Electrical specifications

6.3 Operation and maintenance

The manufacturer ships the bioshutter attached to the sensor that was purchased by the user if it was so ordered. The items delivered:

If the bioshutter is purchased by itself, do the steps below to attach it to an optical sensor.

1. Apply a layer of neoprene between the pressure housings and the hose clamps and V-blocks to prevent scratches.

2. Put the bioshutter and the sensor side by side on a flat surface so that the copper shutter is on top of the optical face of the sensor.

3. Note the location of the ¼-20 holes in the V-blocks. These are used for screws to mount to a deployment structure. Make sure that there will be no interference with the rotation of shutter if such a deployment structure is used.

4. Slide the hose clamps onto the pressure housings.

5. Set the V-blocks between the pressure housings. Make sure that the blocks are as close to the top and the bottom of the shorter sensor as practical.

6. Use a flat blade screwdriver to loosely tighten the hose clamps onto the pressure housings.

7. Adjust the distance between shutter and the optical face to 0.5–1 mm.

8. Tighten the hose clamps onto the OCR and bioshutter.

9. The ends of the hose clamps are sharp. Wrap the ends with electrical tape.

10. Use an abrasive pad if necessary to clean the copper shutter before each deployment.

11. Optional: the shutter is set up by the manufacturer to rotate 180 degrees clockwise.
    The user can set up the shutter to rotate 90 degrees if necessary.
    • Move the 10-32 stainless steel screw to the other open hole. The shutter will rotate 90 degrees to the new hard stop position.

6.3.1 Calculate power use
The bioshutter is typically used in battery-powered moored deployments and can use the same power supply as the OCR to which it is attached. The equation below lets the user estimate the power use of the bioshutter.

Where:

• DBCR = Daily Battery Capacity Requirement
• N = number of events/day
• IMTR = motor current (assume 100 mA)
• tOPEN = time to open the shutter (assume 10 seconds)
• ISS = current necessary in steady state (assume 13 mA)
• tSS = amount of time, in seconds, per event, that the bioshutter has power supplied.

The integral part of the equation is derived from the charge current of the internal backup supply that exponentially decreases.
If the bioshutter operates for 60 seconds every hour for 24 hours, for example, the DBCR is approximately 0.025 Ah per day.

6.3.2 Maintenance

The only maintenance necessary for the bioshutter is to clean the copper shutter at regular intervals and flush the pressure housing after each deployment.

1. Use a ScotchBrite® pad or steel wool to clean the copper shutter. Clean the shutter in place—do not remove from the pressure housing.
2. Flush the sensor and bioshutter with clean fresh water after each deployment.
3. Use a clean soft cloth to dry the sensor and bioshutter.
4. Refer to Clean bulkhead connectors on page 15 for details on the maintenance of bulkhead connectors.
5. Attach the dummy plug and lock collar

Section 7 Reference

7.1 Configuration commands

The command prompt in the terminal program is the $ .
Notes on the use of a terminal program—

• Type -? after a command to get more details.
• Use the backspace key to remove characters in the command before it is sent.
• Commands are case-sensitive: exit is not the same as EXIT or Exit. Most commands are lower case.
• Use the key at the $ prompt to repeat the last command that was executed.
• Type help to see the available commands.

Reference

7.1.1 HOCR configuration values
The Set and Show commands let the user change and look at different values that are stored in the sensor.

Reference

7.2 Network controller operation

The sensor can operate as the controller sensor of a SatNet™ network in which all communication occurs through this sensor and the SatView software or a terminal program. The network controller sends data to a user-supplied data acquisition system.
While the network is in operation the HOCR controls the connected sensors. Data from each of the sensors is sent to the HOCR, which then sends the data to a user-supplied data acquisition system such as a PC. Communication with sensors in the network must go through the controller.
Data is controlled with one-byte commands to the sensor through a terminal program. All commands are ASCII control characters.

Reference

Section 8 General information

Revised editions of this user manual are on the manufacturer’s website.

8.1 Service and support

The manufacturer recommends that sensors be sent back to the manufacturer annually to be cleaned, calibrated, and for standard maintenance.
Refer to the website for FAQs and technical notes, or contact the manufacturer for support at support@seabird.com. Do the steps below to send a sensor back to the manufacturer.

1. Complete the online Return Merchandise Authorization (RMA) form or contact the manufacturer.
   Note: The manufacturer is not responsible for damage to the sensor during return shipment.

2. Remove all batteries from the sensor, if so equipped.

3. Remove all anti-fouling treatments and devices.
   Note: The manufacturer will not accept sensors that have been treated with anti-fouling compounds for service or repair. This includes AF 24173 devices, tri-butyltin, marine anti- fouling paint, ablative coatings, etc.

4. Use the sensor’s original ruggedized shipping case to send the sensor back to the manufacturer.

5. Write the RMA number on the outside of the shipping case and on the packing list.

6. Use 3rd-day air to ship the sensor back to the manufacturer. Do not use ground shipping.

7. The manufacturer will supply all replacement parts and labor and pay to send the sensor back to the user via 3rd-day air shipping.

8.2 Warranty
Refer to the manufacturer’s website for warranty information (seabird.com/warranty).

8.3 China RoHS disclosure table

Sea-Bird Electronics
13431 NE 20th Street
Bellevue WA 98005 U.S.A.
425-643-9866

© WET Labs, Inc., 2022-2024. All rights reserved. Printed in U.S.A.

References

• Sea-Bird Scientific | Powering Science-Based Decisions for a Better Ocean
• Warranty | Sea-Bird Scientific
• P65Warnings.ca.gov

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