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Geonics Limited EM61MK2A Operating Instructions Manual

Data logging system for field computer allegro field pc
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OPERATING INSTRUCTIONS
1745 Meyerside Drive, Mississauga, Ontario, Canada L5T 1C6
Tel: (905) 670 9580
EM61MK2 DATA LOGGING SYSTEM
FOR FIELD COMPUTER Allegro Field PC
(MS DOS Version)
EM61MK2A
Version 2.20
February, 2005
G
eonics
E-mail: geonics@geonics.com
L
imited
Fax: (905) 670 9204

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  • Page 1 OPERATING INSTRUCTIONS EM61MK2 DATA LOGGING SYSTEM FOR FIELD COMPUTER Allegro Field PC (MS DOS Version) EM61MK2A Version 2.20 February, 2005 eonics imited 1745 Meyerside Drive, Mississauga, Ontario, Canada L5T 1C6 Tel: (905) 670 9580 Fax: (905) 670 9204 E-mail: geonics@geonics.com...

  • Page 3: Table Of Contents

    14.2 Upload Files Procedure ..............38 15. View Files ....................42 16. Delete Files ....................43 17. End Program ..................... 44 Appendix A ....................... 45 A.1 Using the EM61MK2A with a GPS Receiver .......... 45 A.2 Description of GGA and GSA Data Messages ........46...
  • Page 4 Appendix B ....................... 47 B.1 Description of Data File in EM61MK2 Format ........47 B.2 Conversion Factors ................50 B.3 Example of File in EM61MK2 Format ........... 52 B.4 Example of Converted Output Format ..........53 Appendix C ...................... 54 C.1 Performing Hard Reset in Allegro and Pro4000 ........

  • Page 5: Introduction

    Polycorder to the Geonics EM61-MK2 instrument. The program EM61MK2A is designed for the Allegro field computer, although, if necessary it can be used with any other IBM compatible computer running a MS DOS operating system and equipped with serial port.

  • Page 6: Program Requirements

    2.1 Contents of EM61MK2A disk 2.1 Contents of EM61MK2A disk The program EM61MK2A is stored on DAT61MK2 CD disk or on one 3.5" floppy disk. All necessary initial files (with extension names .INI) are created in your computer after the program is run for the first time.

  • Page 7: Running Em61Mk2A Program

    While using the Allegro field computer the program can be started from the FileScout (or ProShell for Pro4000) utility program by selecting its name. Otherwise, the program is started from a copy on the working disk, by entering the name EM61MK2A in response to the DOS prompt, i.e.: EM61MK2A...

  • Page 8: Main Menu

    5. Main Menu The Main Menu appears always as the first menu after the program is started. It contains the name of the program, its version number, and list of available options. The EM61MK2A Main Menu is displayed below .

  • Page 9: Antenna Size Menu

    Set Output Port This menu allows to disable and enable optional output to other devices.. This menu is also used to set the format of the output string, serial port number used for output, and to specify necessary serial port communication settings. Advanced COM Setup This option allows you to set address and interrupt level for each used serial port.

  • Page 10: Monitor/Null Menu

    Assuming that the instrument works properly the program will display Monitor/Null menu and will start normalization session which lasts less than 10 seconds. At this stage the Monitor/Null menu will display the following message: After the normalization is finished the layout of the Monitor/Null menu is as follows: Geonics Limited...
  • Page 11 The EM61-MK2 readings are updated approximately 10 times per second during monitoring session. If Mode 4 was selected on the instrument panel channels 1, 2, 3, and 4 will be displayed, and when Mode D was selected (for Top and Bottom antennas) channels 1, 2, 3, and T will be given in the Monitoring menu.

  • Page 12: Description Of Monitoring/Nulling Menu Options

    “Undo” function. If original values (without calculated offsets) of the EM61-MK2 readings are needed, exit the EM61MK2A program and run it again. The EM61-MK2 instrument does not have to be turned OFF. Null operation can be also performed later during data collection.
  • Page 13 Calibration can end in the following four ways: The process can be stopped by an operator at any time by pressing key <Esc>. The calibration may end by time out (60 seconds) if QC coil button was not pressed or this action did not activate QC coil. The following screen will then be displayed: After pressing any key the program returns to Monitoring/Nulling manu.
  • Page 14 “CALIBRATION FAILED” is displayed. Regardless of the test result (OK or FAILED) the readings will be saved on screen. The program returns to Monitoring/Nulling menu after any key is pressed. Then the calibration process can be repeated by pressing key E. Geonics Limited...
  • Page 15 Memory Check After key M (or V) is pressed a small window that shows the amount of available memory for data is displayed. The amount of available memory is given in Kbytes and in number of EM61-MK2 readings (one EM61-MK2 record is 22 bytes long). If GPS data is taken concurrently, one GPS record is equal to 5 or 6 EM61-MK2 readings (110 or 132 bytes).

  • Page 16: Logger Setup Menu

    The new date is accepted (and set in the computer) after the function key F1 is pressed. Use Down or Up arrow key to exit the editor and cancel any changes. Geonics Limited...
  • Page 17 Time This option allows you to change time of the day in the field computer clock. When this option is highlighted pressing the ENTER, or Left or Right arrow keys, enables editor that allows the operator to change hour, minute, and second. The modified time is accepted (and set in the computer clock) after the function key F1 is pressed.
  • Page 18 The program will return to the Main menu. To return to the original settings (state before this option was selected) press the function key F2. All parameters will be reset to the initial settings and the program will return to the Main menu. Geonics Limited...

  • Page 19: Set Port For Gps

    9. Set P 9. Set P ort for GPS Menu 9. Set P ort for GPS Menu ort for GPS Menu ort for GPS Menu 9. Set P 9. Set P ort for GPS Menu After the Set Port for GPS option is selected in the Main Menu the Set Port for GPS menu appears on the screen.

  • Page 20: Monitoring Gps Receiver Output

    This screen is shown below. As soon as the EM61MK2A screen is in terminal mode and the GPS is streaming data, the first 20 characters of each message will appear in the top portion of the display. The display is updated with the frequency the GPS receiver outputs data.
  • Page 21 sending any data, and not working or not connected GPS receiver. If the message is updated more often than 6 seconds (i.e. every 1 or 2 seconds) or the display doeas not show legible characters, it is possible that the GPS is working correctly and is connected to the proper serial port, however communication parameters are not specified correctly.

  • Page 22: Set Output Port

    . This port must be different than the port specified in the Logger Set Up menu (for EM61- MK2 and GPS), otherwise a message will be displayed and ports will have to be reassigned. Geonics Limited...

  • Page 23: Advanced Com Setup

    Baud Rate Specify Baud Rate for the output port, the entered value should much the Baud Rate of the GPS system, default is 9600. Parity Select Parity for the output port, the entered parameter should much the Parity set in the GPS serial port settings, default is N.
  • Page 24 System Setup menu display. To return to original settings (state before this option was selected) press the function key F2. All parameters will be reset to initial settings and the program will return to the Main menu. Geonics Limited...

  • Page 25: Acquiring Data Menu And Logging

    The Create File option can be executed before or after the Survey Setup parameters are specified. The log file is created in the current directory (containing the EM61MK2A program). The name of the file is given by the field computer clock and it consists of month (2 digits), day (2 digits), hour (2 digits), and one alphabetic character A, B, C, etc.

  • Page 26: Survey Setup Menu

    12.2 Survey Setup Menu The Survey Setup menu, presented below, contains several parameters which affect two important procedures: instrument settings (instrument mode, frequency of data collection, etc.) and survey geometry layout (survey line names, line spacing, start station, station increment, etc.). Geonics Limited...
  • Page 27 To select any option use the Down and Up keys. To start the editing of any setting press Left or Right key. Some parameters that have only a few possible options (e.g. EM61 Mode) can be simply toggled by Left or Right keys. Description of the Survey Setup menu options and parameters.
  • Page 28 Line Incr. (survey line name) When this option is highlighted press Left or Right arrow key to activate editor and then enter desired value. This parameter specifies the distance by which survey lines will be separated. This setting Geonics Limited...
  • Page 29 will be used to determine number (name) of the next survey line. Use Down or Up arrow key to leave editor. Sequence When this option is highlighted press Left or Right to toggle between two available settings: Alternate and One Way . Alternate is used when neighboring lines are surveyed in the opposite direction, which is the most common procedure during field surveys.

  • Page 30: Survey Setups

    After all parameters are specified three options represented by function keys F1, F2, and F3 are available : F1 (OK) The display returns to Acquiring Data menu. The selection will become the current Survey Setup parameters, however settings will not be saved as a Survey Setup # for subsequent use. Geonics Limited...

  • Page 31: Log Data Menu

    F2 (Cancel) The display returns to Acquiring Data menu. The selection is cancelled and it will not be saved. F3 (Save) The selection is saved as a particular Survey Setup number. The display does not return to Acquiring Data menu, nor it becomes the current Survey Setup. In order to use the edited parameters as a current Survey Setup use function key F1.
  • Page 32 Readings for channels 1, 2, 3, and 4 (or T) are shown in digital form in the central portion of the screen in the text mode, and below plot area in the graphic mode. The EM61MK2A program prepared for the Allegro field computer, displays labeled channels in graphic mode. Units (mV) are not displayed in the graphic mode.
  • Page 33 GPS reading is written to the data file. In the text mode number of GPS positions follows label DGPS (or AGPS positions are not differentially corrected), the corresponding label in graphic mode is D (or A). Small square moving up and down in Stand By mode indicates that the GPS system is monitored and it is working.

  • Page 34: Field Options

    Survey Setup menu. At the top of the screen the last survey line name and the last station are displayed. Default name for the new line is given based on the Line Increment parameter. The default Start Geonics Limited...
  • Page 35 Station, direction of the Station Increment, and Direction are determined based on Sequence selection. All these parameters can be overwritten by the user as described in the Survey Setup menu description (section 10.2). After selection is updated, it can be accepted by pressing the function key F1. The display returns to the Log Data screen with new settings for the new survey line.
  • Page 36 < Del>(delete reading) This option is labeled Rdg in both display modes. The Delete Reading box that appears on the screen, in the text mode (on the left) and in the graphic mode (on the right) is shown below. Geonics Limited...
  • Page 37 However, there is no associated “Undo” function. If original values (without calculated offsets) of the EM61-MK2 readings are needed, exit the EM61MK2A program and run it again. The EM61-MK2 instrument does not have to be turned OFF.
  • Page 38 QC coil, the program determines that the reading is inside the standard values within +/-10% tolerances then a message “CALIBRATION OK” will be displayed: Otherwise, if the program determines that the reading is outside of the test values range the corresponding message “CALIBRATION FAILED” is displayed. Geonics Limited...
  • Page 39 Regardless of the test result (OK or FAILED) the readings will be saved on screen. The program returns to Monitoring/Nulling menu after any key is pressed. Then the calibration process can be repeated. E (External QC Coil Calibration) The External QC coil calibration is described in detail in the EM61-MK2 Operating Instructions.
  • Page 40 When the key Y is pressed the data file is closed and the program returns to the Acquiring Data menu. In order to continue survey a new data file must be created. If the key N is pressed the program returns to current logging mode. Geonics Limited...

  • Page 41: File Manager

    After the File Manager option is selected in the Main Menu the File Manager menu is displayed. Three options Upload Files, View Files, and Delete Files are described in following sections 14, 15, and 16. Select and execute option Main Menu to return to the main menu of the EM61MK2A. 14. Data T 14.

  • Page 42: Upload Files Procedure

    (ie. file name ABC.R61 would be changed to ABC_1.R61, ABC_2.R61, and so on.) To select the directory where transferred files will be placed click the Browse button. The Select Directory for EM61MK2 Files window will be displayed (Figure below). Geonics Limited...
  • Page 43 After the directory is selected, it will be displayed in the text box labelled Save In at bottom part of the Download EM61MK2 Files window. The selected directory will be saved and it will be used as the default directory during subsequent DAT61MK2 executions. If this directory is removed the C:\ directory will be used instead.
  • Page 44 To start downloading the data files, connect the field computer (Allegro or Pro4000) and PC computer with the serial cable. Run the EM61MK2A program in the logger. In the Main menu of the program select Upload Files option, and press <ENTER> . The logger screen will display the message “Waiting for PC”...
  • Page 45 When file selection is complete click the Download button. The name of each transferred file is displayed at the bottom of the window as it transfers and a progress bar indicates the percentage completed, as shown in the following Figure. At the same time the logger screen displays transmitted file name and percentage of completed uploading (Figure below).

  • Page 46: View Files

    Manager menu the View Files menu with a list of data files and their size appears on the screen. This menu is presented below. Select the file by using Down and Up arrow keys. When the desired file is highlighted press function Geonics Limited...

  • Page 47: Delete Files

    F1 to view contents of this file. Pressing key F2 will return the program to the EM61MK2A File Manager menu. After key F1 is pressed the View File menu with readings taken at the first station of the first survey line in the file is displayed, as shown below.

  • Page 48: End Program

    When key N is pressed the confirmation prompt disappears and display shows the list of available data files. Exit the Delete Files menu by pressing the function key F2. The program will return to the EM61MK2A File Manager menu. 17. End P 17. End P...

  • Page 49: Using The Em61Mk2A With A Gps Receiver

    NMEA messages. It is important to select only two messages (GGA and GSA) that are actually used by EM61MK2A. The program will accept any GPS string sent by the GPS receiver, however it uses time to process GPS data that is not being used. Therefore, selecting a larger number of NMEA messages for GPS output will result in slower data acquisition of EM61MK2A.

  • Page 50: Description Of Gga And Gsa Data Messages

    Satellites used in position computation (range 0 to 32) PDOP (range 0 to 99.9) HDOP (range 0 to 99.9) VDOP (range 0 to 99.9) Checksum < C R > < L F > Carriage return and Line Feed Geonics Limited...

  • Page 51: Description Of Data File In Em61Mk2 Format

    Appendix B Appendix B Appendix B Appendix B Appendix B B.1 Description of Data File in EM61MK2 Format B.1 Description of Data File in EM61MK2 Format B.1 Description of Data File in EM61MK2 Format B.1 Description of Data File in EM61MK2 Format B.1 Description of Data File in EM61MK2 Format Each record contains 22 characters, including line feed at the end of each record.
  • Page 52 10 11 12 13 14 15 16 17 18 19 20 21 22 Comment (maximum 11 characters) Time Stamp (HH:MM:SS.hh) New Station 10 11 12 13 14 15 16 17 18 19 20 21 22 New Station (Format 11.2) Time Stamp (HH:MM:SS.hh) Geonics Limited...
  • Page 53 Deleted Records 10 11 12 13 14 15 16 17 18 19 20 21 22 X Gn 5h 5l H H M M 1h 1l Comment (maximum 11 characters) Time Stamp (HH:MM:SS.hh) Nulling Former Offset for Ch1 (F9.2) Offset for Ch1 (F9.2) Former Offset for Ch2 (F9.2) Offset for Ch2 (F9.2) Former Offset for Ch3 (F9.2)

  • Page 54: Conversion Factors

    Further each channel is normalized by current following formula: Standard Unit Channel = Channel x 3000/Current Hand Held Unit Channel = Channel x 1800/Current where, current is a value represented by 5h, 5l, and 6 in EM61MK2 data file (see section B.1) Geonics Limited...
  • Page 55 Table of Ranges Determined by the EM61MK2 Micro p rocessor HEX Ch1 HEX Ch1 HEX Ch1 EM61MK2 Data Logging System (DAS70/61MK2)

  • Page 56: Example Of File In Em61Mk2 Format

    @$GPGGA,000230.00,433 #6.59281,N,07936.6513 #3,W,2,7,1,139.93,M,- #35,M,6,118*52 20024369 FÿYoëöBPO20024374 FÿZ$jèRO20024385 FÿYI–•üSO20024396 FÿYvœÀNO20024407 FÿZg§QO20024418 FÿZ<b’öQO20024429 FÿY}]·MO20024440 FÿZC¼CNO20024451 FÿZT©–ëQO20024462 @$GPGGA,000231.00,433 #6.59281,N,07936.6513 #5,W,2,7,1,140.29,M,- #35,M,5,118*59 20024473 FÿY0Ó§LO20024473 FÿYÔƒÛ-FO20024484 FÿZdð}èIO20024495 FÿZÍuæDO20024506 FÿY…ȈûHO20024517 @$GPGGA,000232.00,433 #6.59280,N,07936.6513 #4,W,2,7,1,140.27,M,- #35,M,6,118*57 20024572 FÿYk- FO20024578 FÿXü,å+HO20024589 FÿY=™DEO20024600 FÿZÒ²›GO20024611 FÿYߟˆ÷JO20024622 FÿZÉ£FO20024633 FÿZøó› HO20024644 Geonics Limited...

  • Page 57: Example Of Converted Output Format

    B.4 Example of Converted Output Format B.4 Example of Converted Output Format B.4 Example of Converted Output Format B.4 Example of Converted Output Format B.4 Example of Converted Output Format If Output in Set Output Port was enabled and Format was set to Converted the data will be send through serial port to external device in the following format.

  • Page 58: Performing Hard Reset In Allegro And Pro4000

    Local, displays the contents of the PC. The bottom screen, labeled Remote, displays the contents of the Allegro or Pro4000 assuming a connection is established. Several file management functions can be performed using Lynx, including File Transfer, renaming folders, creating new folders or sub-folders, and deleting files. Geonics Limited...

  • Page 59: File Transfer Using Lynx

    C.5 File T C.5 File T ransfer Using L ransfer Using L ynx ynx ynx ynx C.5 File T C.5 File Transfer Using L C.5 File T ransfer Using L ransfer Using Lynx Establishing Communication Establishing Communication Establishing Communication Establishing Communication Establishing Communication To transfer data to and from a base computer, attach the cable (null modem serial communication cable) between the Allegro (or Pro4000) and the computer COM ports.

  • Page 60: Installation Of The Quatech Qsp-100 Card In Allegro (Or Pro4000)

    Pro4000 computers revealed that these options can be omitted and a base address and interrupt level are assigned Card and Socket Services. Insert the QSP-100 card into one of the system’s PCMCIA slots. The QSP-100 Client Driver supports “Hot Swapping” which means that it is not necessary to have the card Geonics Limited...
  • Page 61 I/O address and interrupt level. Assuming that in the EM61MK2A program the serial ports associated with QSP-100 card will be named COM3, COM4, COM5, and COM6, and the assigned I/O Base Address is 380H and IRQ is 5, the following settings must be specified in “Advance COM Setup”...

  • Page 62: Installation Of The Quatech Ssp-100 Card In Allegro (Or Pro4000)

    I/O Base Address = 3E8, IRQ Level = 4 COM4: I/O Base Address = 2E8, IRQ Level = 3 The I/O Base Address and Interrupt will be necessary to assign SSP-100 serial ports in EM61MK2A software (Advanced COM Setup). Geonics Limited...

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