Underway Geophysics Lab Cookbook
Contents
1. GPIB address 16 Lhe From this control panel you can select either the Ashtech or the Omnistar as the source for GPS data and set the serial port number and the serial communication parameters for the gyrocompass and magnetometer as well After setting the parameters click the INITIALIZE INTERFACE button UW will EPC Connection Initialization amp Testing perform the initialization process as described in the Setup section of this manual except that ee once the GPIB bus is initialized 1t will show the on line EPC recorders You can confirm the connection to these recorders by commanding each in turn to start a test print by clicking CONFIRM EPC CONNECTION BY TEST PRINT button Cookbook U W_Labview watch 5 Using the U W Watch application Tab Control Control are grayed when recorder is Underway Main vi NOT on line PDR12 PDR35 Analog1 Analog Annota Time Marks Magnetometer GPS Source Ashtech 12 PDR 3 5 PDR Analog 1 Analog 2 ON LINE 3 ON LINE ON LINE ON LINE T t LEFT MIDDLE RIGHT LEFT MIDDLE RIGHT Time 6h 47m 55s Park Date 20 AUG 2001 C ANNOTATE tNESSAGE d Check to include w message max number of characters 60 Example of message to be printed on 12 PDR White Out i or rab cy lt D pl ceo fe fy fees 5 Line ID 4T Time Zone Manual Size ff 2 Advance All Recorders Click to start advancing on all recorders Click again to stop advance Data Di2. data point if you make the change just as data is being written You will not see any change in the magnetic data graph but the new file name will be shown in the Data Path indicator Cookbook U W_Labview watch 10 Time Mark Tab Use this page to turn the time marks Set the automatic Time Anotation for each recorder on and off for each 12PDR 35PDR recorder A time o min o mine mark is on when oe PF the green indicator 30 min 30 min is lit PODR 12 PDR35_ Analo a Analo gq Annotation Ti me Marks Ma gnetometer Analog 1 Analog 2 Cookbook U W_Labview watch 11 Magnetometer Tab Graph controls PDR12 PDR35 Analog1 Analog2 Annotation Time Ma rp Wagnetometer Plat 0 46000 45000 44000 435000 7 42000 41000 40000 Scale controls Time and the field 38000 strength at the eUnS ots Pe sien 18 00 00 19 00 00 20 00 00 71 00 00 22 00 00 are displayed 25706 25706 25708 25 08 25 08 25 08 here Time Click to a a Time a r i top start data Ea laaaina Field rm pee pe Em mt I Value of the current Field 0 00 measiirameant i signal Data Path Voltage 0 0 CAUVAMAG LOG IS7 197_5x 1 MLG Tuning 0 0 File path of data log If UW is connected to the magnetometer and the magnetometer is on its data will be displayed here The graph will display the last 6 hours of data at a 3 second sampling rate You must use either WinFro
3. may not be the values in use by the recorder The last command sent by the program or the panel is the most current but there is no way to know who sent the last command The EPC recorders do not provide functions to either lock out the panel controls or to query the panel controls for their current values The only way to confirm what values are being used is to re send the command from the UW program or the control panel or to click the annotate button and print out the values Cookbook U W_Labview watch 8 Annotate Tab Click to print a mark LEFT MIDDLE BIGHT LEFT MIDDLE RIGHT on this recorder gt Click to print this recorder s annotation message vwiPasition Type the user s wor amp Hag message here ee wii os Displays the Use to place an on line recorder in stand hv mode Sets where on the page to print ON LINE w0 4 ON LINE 7 ON LINE Click to print the user s message to this recorder message to be sent to the recorder s Grayed out controls indicate that this recorder is off line 12 PDR 3 5 FR Analog 1 Analog 2 y 7 Check to include WY etsage vwiDate Wi IR12 PDR35 Analo gq nig 2 Annotation Time Marks Ma qnetometer Click to mark ALL on line recorders Click to annotate ALL on line recorders Click to send message ALL on line recorders wLeq gl vwLine ID m
4. 2250 3000 4500 5250 depth check Current depth program Set Delay TA Scan and Key time values Use to set pa intensity of the Dew 0100 j lela Set scale lines Dela Set Scan E sE Scan Set Use to set the number of gray a Key COO Key Set shades to use Use to turn time Warming not all values nor combincation of Delay ticks on off Shade Set Scan and Kep legal Time Tics So amp TicsSet O sync Clock Repeat Line G Repeat Set Click to sync the EPC recorder s clock to GPS time Enter the number of lines to repeat 1 9 The tabs for PDR12 PDR 3 5 Analog 1 and Analog 2 are identical in function and appearance with the exception that the Analog 1 and 2 tabs do not have the depth program controls Depth Controls The depth program controls on the PDR 12 and 3 5 tabs are used to send the depth program to the EPC recorder The UW will take care of setting the correct delay time always 0 100 scan time and key time when switching between a depth check 8 sec and depth range 1 sec The current depth program s key gate and print sequence is displayed below Cookbook U W_Labview watch 7 Special EPC Commands This group of controls provide access to special EPC commands or settings that cannot be executed from the EPC recorder s control panel Except for the Sync Clock button you must set the value of the control and then click the Set button to send the command to the recorde
5. Underway Geophysics Lab Cookbook User s Guide to the Underway Watch Application As of Leg 199 December 2001 Introduction The Underway Watch UW application provides full time mark annotation control of all four EPC recorders Using data collected from our GPS receivers Ashtech or Omnistar and the gyrocompass repeater UW will time mark the EPC records at 5 min 30 min and 4 hour intervals In addition to time mark annotation the UW application provides the following e You can set the PDR s depth program to any rang including Depth Check mode e You can mark annotate or print user s messages to individual or to all EPC recorders at the same time e You can access special EPC commands not provided on the recorders control panel e You can collect display and log magnetometer data Setup The UW application runs on the backup WinFrog PC WinFrog 2 Special Y connectors multi color ribbon cables allows UW to monitor but not control the serial data stream to WinFrog 1 from the gyrocompass Omnistar GPS receiver and the magnetometer The ends of the Y connectors are plugged into the WinFrog 1 amp 2 DigiBoard connector block while the data input is connected to the center plug UW uses Port C of the Ashtech GPS receiver leaving Port B for Winfrog 1 The default serial port configuration for both WinFrog 1 amp 2 as follows Control of the EPC recorders is done over GPIB General Purpo
6. Wilk gi Peo ea Time Zone 1 White Out Ii wiODP m Update le Ba WEPC ID mi es ae a Line lb 47 TimeZone a Manual ole f 2m Range Wi Check to add data to message Check for a white background behind message Update line number here In auto mode the time zone is calculated from the LON and displayed In manual mode select the time zone in the display control Annotation Controls On this page you will find controls for marking and printing Under each recorder s name are four controls oS The justification control is used to set where time marks and user messages are printed justified Just set this control to the desired position and the next time a time mark or message is printed it will read this control s setting first Click the MARK button to print a line mark across the page Click the ANNOTATE button to print the recorder s annotation message printer settings Note the EPC recorder and not the UW program controls how the recorder s annotation message is printed The UW justification control 1s ignored Clicking the UW s ANNOTATE button and pressing the annotate switch on the recorder are one and the same Click the MESSAGE button to print the user s message Cookbook U W_Labview watch 9 _ lt annotate 9 C MESSAGE On the right side across from the buttons are three switches marked ALL Clicking Q All th
7. ese switches will send the command to all on line recorders User s Message Below the Annotation controls is a text box where you can enter messages to send to the recorder To the right of this text box are check boxes that you can check to add data to your message such as current position Also you can set the size of the print and to have a white background for your message The length of you message is limited to 80 characters and shorter for the larger print size The actual message that will print is shown below the text box Leg Line and Time Zone When UW is first launched you will be prompted to enter the Leg and Line numbers The value you enter there will be displayed in the Leg and Line number controls displayed on this page You can change the values anytime by just typing into the controls The time zone value can be set either by calculation from the current longitude Auto mode or selected by the user Manual mode A switch below the Time Zone control selects the mode In Auto mode the time zone is calculated by dividing the longitude by 15 and rounding up and setting the value negative if it is east As already mentioned the Leg and Line number values are used to create the folder Leg number and file name Leg and Line numbers When you change these values the old file is closed and a new file with the new values is created without notifying the user Magnetic data is automatically logged to the new file You may loose one
8. g or the Geometrics software to initialize and tune the magnetometer Data logging is automatic file names are created based on the Leg and Line number You stop and start data logging by clicking on the Data Logging switch control The MLG extension will be added to the name Each row in the data file has this format Mag_Field lt tab gt Minute lt tab gt Second lt tab gt Day lt tab gt Month lt tab gt Year lt tab gt Lat_Degree lt tab gt Lat_Minute lt tab gt N S lt tab gt LAT lt tab gt Lon_Degree lt tab gt Lon_Minute lt tab gt E W lt tab gt LON lt cr gt lt lf gt Cookbook U W_Labview watch 12
9. ndow will open the library will be loaded Once loaded the UW application will being its initialization functions Under normal circumstances the UW application will begin initialization by reading its setup file which contain the operating parameters in use when the program closed When running UW for the first time or the setup file has been deleted for some reason you will receive a warning that the setup file was not found Next the U W Watch Init control panel will open From this control panel you can set all of the connection parameters and test EPC control How to use this control panel is discussed in the Initializing U W Watch section of this manual Back to a normal startup A dialog box will open where you can enter the current Leg and Line number The controls will contain the last values used When done click OK Cookbook U W_Labview watch 2 Note The Leg and Line values are used to make the folders and file names for the magnetic data files Except for the Ashtech GPS receiver the UW application does not control any of the data sources but instead monitors their data stream to WinFrog 1 So the first step in the initialization process is to look for the GPS data stream The UW application expects the GPS receiver to broadcast the following message formats GPZDA GPVTG and GPGGA These are standard formats that both the Omnistar and Ashtech GPS receivers support If GPS Initialization you are usi
10. ng the Ashtech receiver and the data stream 1s not seen nor correctly formatted UW will send commands to the Ashtech receiver to begin transmitting the three messages In the case of the Omnistar system you must use its initialization program to start sending the three messages Next UW looks for the gyrocompass data stream GYRO Initialization Upon power up the gyrocompass will begin to broadcast heading information There are no initialization programs for this device After the gyrocompass UW will look for the Magnetometer data stream Use the magnetometer s initialization application to setup communications if there is a problem Magnetometer Initialization The final step in the initialization process is to find the EPC recorders that are on line by searching for their GPIB addresses 2 4 8 16 Note it is best to have the EPC recorders already powered up before starting the program but it s not necessary The EPC recorders can be turned on or off at anytime while the program is running The UW constantly checks for any new EPC recorders on the GPIB When UW sees that a recorder has powered up it will display a warning Make sure that you follow the instructions in the dialog box otherwise the GPIB interface on the recorder will locked up an you will get a lot of error messages anytime UW sends a command to the EPC recorder If you continue to see error messages then press the recorder s reset b
11. r e Scale Line Int Sets the intensity that the scale lines are printed at e Shade Lev Sets the number of shades of gray that are used to represent a voltage from 10 to 10 the intensity of the returned signal e Sync Clock Sets the recorders internal clock time day month and year to the current GPS value e Delay Scan and Key Sets the time for these parameters Warning the recorder will accept not all time values or combination of time values I would refer you to the EPC manual but it is very vague on this subject Only use these controls when the recorder s panel controls do not provide the time value you need IF YOU USE THES CONTROLS ALWAYS CONFIRM THAT THE COMMAND WAS ACCEPTED BY CLICKING THE RECORDER S ANNOTATE BUTTON TO PRINT THE RECORDER S CURRENT SETTING e Time Tics Turns on the recorders 1 minute time ticks This is not the same as the 5 min 30 min and 4 hour time marks If you use this feature then make sure that you first set the recorder s clock to GPS time otherwise UW s time marks and the recorder s time tics will not agree e Repeat Lines Sets the number of times that the same line of data is printed 1 9 It used to change vertical aspect of the print out The feature is only used on the Analog 1 and 2 recorders Before leaving the subject of special commands it is important for you the watch stander to understand that the values shown by the UW program or on the recorder s panel
12. se Interface Bus sometimes known as HPIB A national instrument GPIB board is installed in WinFrog 2 and single cable connects all four EPC recorders to the PC Each of the EPC recorders must have a unique GPIB address which is set by setting the DIP switches on the left side of each recorder Instructions on how to set these switches can be found in the EPC manuals but once set they should really never change Cookbook U W_Labview watch 1 The UW application takes advantage of the unique GPIB addresses to identify the function PDR 12 GPIB address 2 P of each recorder What this means is that you T can t just set the GPIB address to any unique PDR 3 5 GPIB address 4 PEE value You must use the values shown to the right gt Analog 1 GPIB address 8 ok For example The EPC recorder used for the Analog 2 GPIB address 16 Le collection of 3 5 kHz data breaks down and you want to use the Analog 1 EPC recorder in its place To have UW to recognize the new EPC recorder as the 3 5 PDR you must change its address from 8 to 4 Remember to cycle the power on the recorder after resetting the GPIB address and re start the program Getting Started The UW application is a LabView 6 02 executable library You must have Fe Lab View 6 02 or higher version installed on the PC for UW to run A ele shortcut to the library should be on the desktop and in the start menu Ow WATCH Double click on the shortcut icon The LabView wi
13. splay On the left side of the window the values for the ship s position speed over ground SOG heading course GMT time from the GPS receiver and gyrocompass are displayed These values are updated every 1 2 second When the window first opens it is common for these values to rapidly update as the contents of the serial buffer is read Within or 2 seconds the display will catch up with the data sent from the GPS receiver When using the UW application DO NOT run any other applications other than the Excel for the depth table UW is involved in real time data acquisition which uses most of the computer s resources Running another applications at the same time can cause data to be missed or hang up the computer Please note that the position displayed is antenna position is not corrected to the moonpool Cookbook U W_Labview watch 6 All Recorder Rapid Advance You can cause all on line EPC recorders to rapid advance by clicking the Advance All Recorders button at the bottom of the window Click this button again to stop advance The button will blink yellow when advancing Tab Control On the right side of the window is a tab control Click on the tab to access the features of that tab s page The following will describe the features of each page PDR 12 PDR 3 5 Analog 1 and Analog 2 Tabs PDR12 e eee gl Anale a Annotation Time Marks Ma gnetometer g Click to set depth 12 PDR Depth Range program or do a 0 750
14. utton top left corner This should clear up the problem If you continue to have problems re initialize the UW application see below Cookbook U W_Labview watch 3 It is best not to power up a recorder near the time when the 5 or 30 minute mark is printed While this dialog box is displayed the UW application is locked and not updating Once this last step is completed the main window of the UW application will open Cookbook U W_Labview watch 4 Initializing U W Watch As mentioned in the previous section the U W Watch FATES ATR Init control panel will open if the setup file cannot be f found during initialization Also this same control panel can be accessed from the menu bar once the program has open Program G AA Watchnit Set serial port and communication Select One GPS Source parameters Ashtech GPS Select E Omnistar GPS lor gat E mn Pea ee ae Lee peiee GPS E Sla ero ir yi a Repeater Mla q Cl AURING GPS Port pots Gyro Port Pora Mag Port Pors Baud A T Baud 5600 Baud A T Baud S600 Baud A T Baud 1200 Data Bits a Data Bits Data Bits a Data Bits Data Bits a Data Bits stop Bits 1 Stop Bit stop Bits 1 Stop Bit Stop Bits A 1 Stop Bit Parity No Parity Parity No Parity Parity Ho Parity EPL Recorders 2345 PDR 12 GPIB address 2 S INITIALIZE 2345 INTERFACE Click to start PDR 3 5 GPIB address 4 E initialization Analog 1 GPIB address 8 at Analog 2
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