IceRadar 2.0 – User Manual 1 Introduction and foreword:
Contents
1. i 0 0 location 54 5 iM Triggers received 100 10 0mv location 5 mmm MUR location 56 ata Save Mode F9 20 7m 20mW GPS Fix 300ns 05 500ns 1us 2us 2us eic None Semi Auto F Time s d location ays ColorScale ctr F9 v Radar Signal Auto Scale HAN Dites Manual C Auto 20m n 5 10 15 20 25 30 35 40 45 50 55 60 65 70 7 80 85 90 35 location 60 location 61 100 location_62 Auto cycle Delay s F8 2 location 63 location 64 Enable GPS data capture F1 v location 65 location 66 ACQUIRE location 68 location_69 location 70 Lat 4915 5476 location 71 Long 12304 4450 location 72 Satellites 05 location 73 GPS Fix valid s location 74 GPS Message ok location 75 location 76 location 77 GPS Single Read F12 location 78 SPORA 3 Details of Hardware Settings User Inputs and Data View 3 1 Hardware Settings Details Navigate Pg up down Info Application Hardware Settings Channel Fa Trigger Selection Specific Parameters mo Max Input Frequency SOM Type Edge Trigger Level 0 035 soit E ope Source Channel 0 Hysteresis 0 000 1 Vertical IRSE SE Negative x Vertical Range v 0 400 Common Parameters Not all parameters apply to all trigger types 31 22 ing Vertical Offset 0 0000 Ea Trigger Delay 0 0000 S Window Low Level 0 00 S window Mode vertical coupling J Gr2. F1 If vou recently installed a device and it is not in the list run Measurement and Automation Explorer MAX to make sure the device shows up in MAX fisrt MI LIEB 3133 at Devi sn ES66DC MI WS6 S153 at Dev1 sn EA66DC NI USB 5133 at Deve sm n a Virtual Device PCI 5114 at Dev3 sn n a virtual Device Once GPS and Digitizer are selected set the hardware settings as required via the Hardware Settings window Commit any changes to the settings Commit Settings F1U Notes on Digitizer selection Checking proper operation of the digitizer prior to run IceRadar can be done with the Measurements and Automation eXplorer MAX selecting the device under Devices and Interfaces gt NI DAQmx Devices using the Self Test and Test Panels functions H Measurement amp Automation configuration X Delete Zh Self Test EA Test Panels E My System 1188 Data Neighborhood Mame value 81 Devices and Interfaces Serial Number oxo NI DAGmx Devices 89 MI LI5B 5133 Devi E1 MI LISB 5133 Devz 9 NI PCI 5114 Devs 89 MI LI5B 5133 JP gl Jdl L iEL IceRadar2 0 Manual 9 out of 31 Test Panels HI USB 5133 Dev Analog Input Channel 0 we Acquisition Mode Continuous w Sampling Rate 100000000 00 H Amplitude i Points to Read 512 Vertical Range 2 iw 20 00 l 2 4E 6 5 11 Points Error Error Details m
3. AS line 0 LocationsSystemMan LacatianGivenName Comments Creation Timestamp location 0 new location start at survey pole 23 27 03 2009 3 54 58 PM Create Mew Location Pending New Location SystemMName Location_given_name location_1 first pole Max 20 char Location Comments Max 100 char pole up 1 35m above surface Create Location Enter Cancel esc IceRadar2 0 Manual 20 out of 31 It is recommended to give a Location a user name for any specific locations of interest such as a survey pole the beginning of a survey line last point of a survey line etc For more standards Location running in Auto Mode is recommended Stacking Shortcut F7 to select Stacking allows to average the indicated number of traces before saving Discrete values are allowed 1 25 50 100 256 Auto cycle Delay s Shortcut F8 to select Specifies how many seconds to wait between acquisitions It is important to keep in mind that with the NI 5132 5133 the stacking is software timed between trigger events Acquiring a triggered radargram is first done in the digitizer s on board memory The data is then fetched into computer RAM via USB Then the digitizer waits for the next available trigger to acquire a new data set GPS communication is run in a separate thread to limit overhead When Stacking is set at 100 or more the Auto Cycle Delay can be set to 0 which will lead to an effective sampling rate of
4. Close Also the SCOPE Soft Panel application found under Program Files gt National Instruments gt NI Scope can be used to run the digitizer as a simple oscilloscope Virtual digitizers may also be listed if they were previously defined with MAX This can be beneficial to test the file saving features of IceRadar without actual hardware connected to the digitizer Your laptop will have a virtual device already defined LN HI DAOmx Devices Measurement amp Automation Explorer File Edit View Tools Help 65 My System E Data Neighborhood MI DAcGmx Devices Device Tvpe 5 BW Devices and Interfaces Ig NI LISB 5133 Devi Plug in Device MI DAOmxy Devices 7 MI LISB 5133 Dev Plug in Device MI DAGQmzx pi MI Create New MI DAGQmx Device RTSI Cable COMIX 87 NIU Dev MI DAGQmx SCHI Chassis fe NIPCI S114 Dev3 NI DAQmx SCC Connector Block 97 NI LI5B 5133 Dew UR EIE DAOQmx nterface xj PXI Pal System Unidentified x E Serial amp Parallel p MI DAOQmx Simulated Device 44 Scales 5 Software II Drivers e Remote Systems Once GPS and Digitizer are up and running with the application checking proper operation of the IceRadar2 0 Manual 10 out of 31 GPS is required Checking GPS Mode Check GPS Mode F2 Click on Check GPS Mode will open the Test GPS window If the GPS is set up properly updated GPS readings will scroll automatically as
5. Data Save Mode GPS Data Capture can be set IceRadar2 0 Manual 7 out of 31 Conceptually a Location identify where a radargram is acquired Logically it is defined by a position data set from the GPS and a radargram data set from the digitizer A Location is always part of one Line and many Locations belong to a Line Additionally the Browse function can be used to quickly view data acquired in other Lines and Files Because IceRadar is mainly an applications used to collect data only basic line browsing features are built in 2 3 Using the Application 2 3 1 Hardware Initialization This is a two step process First the GPS port is selected followed by the digitizer initialization GPS d3 Select GPS Device and Associated Serial Port g T3 Select GPS Device and Associated Serial Port E Select Device F1 Select Device F1 Rikaline 6017 t Rikaline 6017 v GPS Serial Port Baud Rate i Serial Port aa check Ports auds v x Check Ports 57600 v 4 COM Check Ports COMI COMO COM3 ance ae Help F3 COMES Help F3 COM LPT1 Refresh In case no GPS serial port is shown in the drop down menu when the pop up opens or if the Prolific serial port does not show just open the drop down and select Refresh The selected baud rate must match the GPS rate setting obtained with SiRFDemo Do not change this settings without first checking the port speed with SiRFDemo SiRFDemo is expla
6. Data are saved automatically every Auto cycle Delay s Location is incremented automatically after the Acquire F4 button is clicked once Use this mode when progression along a Line is steady Once the acquisition is on going check once in a while the radargram as they are acquired the GPS readings and the file size Stacking IceRadar2 0 Manual 30 out of 31 Shortcut F7 to select Stacking allows to average the indicated number of traces before saving Discrete values are allowed 1 25 50 100 256 Auto cycle Delay s Shortcut F8 to select Specifies how many seconds to wait between acquisitions It is important to keep in mind that with the NI 5132 5133 the stacking is software timed between trigger events Acquiring a triggered radargram is first done in the digitizer s on board memory The data is then fetched into computer RAM via USB Then the digitizer waits for the next available trigger to acquire a new data set GPS communication is run in a separate thread to limit overhead When Stacking is set at 100 or more the Auto Cycle Delay can be set to 0 which will lead to an effective sampling rate of as low as about 2 seconds When Stacking is set to 50 or less the Auto Cycle Minimum setting is 1 second which will lead to an effective sampling rate as low as 1 to 2 seconds This limitation has been implemented to insure low overhead on the processors to increase reliability and insure the application can acquire data on A
7. Source Use Aux Data Source Pott Baud Rate 115200 x Ready A independent of IceRadar and its operation is summarized below At launch SiRFDEMO will open and immediately show a Data Source Setup pop up with Serial Port and Baud rate settings Select the port where the GPS is located and set the speed to IceRadar2 0 Manual 12 out of 31 57600 baud Next open the connection to the GPS device by clicking on the following icon The next step requires to Synchronize the Protocol and Baud Rate It is done as shown below Th SIRFDe mo 3 87 Target W Unknown on COM4 5 7600 Setup View Action Navigation Poll Window Ed mwg w Open Data Source Open Log File et Pause Display 9 4 Initialize Data Source Switch to NMEA Protocol Synchronize Protocol amp Baud Rate 1 Switch to Userl Protocol nmm Set Main Serial Port Set DGPS Serial Port Set LIART Configuration NE Set Almanac Set Ephemeris Switch Operating Mode kz Set Low Power Trickle Power 1 Set Message Rate Transmit Serial Message While the synchronization is taking place the top of SiRFDemo windows shows the sequencing of baud rates until the system settles down on the correct one This operation sometimes does not recognize the firmware on the GPS chip and it needs to be repeated a few times Mh S1IRFDemo 3 87 Target SW Unknown on COM4 5 7600 Ph SiRFDemo 3 87 Target
8. Sus None Semi Auto 20 0m 500ns Os 105 5 mV GPS Fix MM 2us 3us 4us 2 Time s H 50 Radargram a ColorScale Show Line 2D Profile ctr F9 v Radar Signal Auto Scale HAR AN Manual Auto m 25 0 5 75 100 125 150 175 200 225 250 275 300 325 350 375 400 425 450 475 500 525542 MIN 2 Stacking F7 1 Aen Auto cycle Delay s F8 5 15m Enable GPS data capture F1 35m ACQUIRE F4 55m Dx PAUSE F5 95 m Lat 115m Long 135m Satellites 155m GPS Fix valid REN GPS Message ok MN 175 m 195 6 GPS Single Read F12 215m 235m BB The Data View window allows the user to follow the acquisition data as radargrams are being acquired The top left graph shows the relative position of the data Locations as read by the GPS Position is expressed in Lat Long and is given here solely as a rough guide of the Line trajectory on the terrain The radar signal graph shows a given radargram as it is been acquired by the digitizer If Stacking is enabled the plot will flicker indicating several radargrams are being acquired However during stacking just a subset of the stacked data will be shown being refreshed and once stacking si completedthe averaged data resulting from it will be shown The 2D Profile graph shows a waterfall view of all the radargram acquired in the current Line Times are converted to depth based on the wave parameters previously entered From this windows Stacking Auto cycle Delay
9. W GSW3 1 1 SDE 3 1 00 0 7 C 23P 1 00 on COM475 7600 Following the synchronization the Signal View should show that the GPS is reading properly On the example below 7 satellites were found 4 of them giving strong green signal ot Az Fl C Mo 11 BF 291 41 eu 22 93 af 18 19 AD 231 19 el 32 20 282 35 22 20 20 282 14 31 20 154 28 17 14 AD 61 69 14 IceRadar2 0 Manual 13 out of 31 Note that at this stage the Debug View is still empty fi Verifying Disabled Static Mode in SiRFDemo Even though the GPS will have been set with the Static Mode Disabled prior to shipping it is always possible the setting will revert to Enable especially when the instrument changes location between usages in the order of several kilometers and definitively when shipped over hundreds of kilometers The settings is done when SiRFDemo is connected and actively ready the GPS data in binary mode SiEFDemo 3 87 Target SW GS9W3 1 1 SDE 3 1 Setup view Action Navigation Pall Window Mode Mask b weg DOP Mask Elevation Mask Power Mask Static Ma vigatian DGPS Made DiGP5 Source SB45 Control Static Havigation Default Disable ee Cancel IceRadar2 0 Manual 14 out of 31 Switching the GPS to NMEA Mode Next step is to set the GPS into NMEA mode from the default SIRF mode This is achieved as shown below Mh SiRFDemo 3 87 Target SW GSW3 1 1 5
10. a result of slight GPS position changes within a few meters T Test GPS Reading Updated GPS Reading e GPS String GPS Data Cluster Details Tabbing F4 then Left Right arrows Manual Poll F1 C gt 003206 000 4915 5541 12304 4434 06 Change Detected 003204 000 4915 5533 12304 4438 06 Change Detected Clear readings Fiz STOP esc Clear Error del C error Out status code n EO GPS Fix valid GPS Message Ok cou Proper GPS setting means that the Rikaline GPS must have been set with Disabled Static Mode prior to run an acquisition at low speed such as walking skiing or low speed skidoo If the Static Mode is enabled the GPS will freeze the position at very low speed to cancel out the drifting resulting from its intrinsic reading fluctuations Position updates are then only available when either the location changes by about 50m or when an acceleration is detected The appropriate GPS settings should have been already checked with the SiRFDemo utility However to make sure the settings are still maintained in the GPS observing the GPS reading in the GPS String Tab of the Test GPS Reading pop up will confirm GPS proper operation After a few seconds the GPS String should update every few seconds following a slight change in position a few meters and the Changed Detected message should appear with the new GPS data string If the GPS failed to be set on the Disabled Static Mode no position update with t
11. change is the GPS resetting itself In this case the GPS has to be set back to NMEA mode and 57600 baud IceRadar2 0 Manual 2 out of 31 A screen capture utility was also installed on the system It is called ScreenPrint32 and will capture an image of all or a user selectable area if the Prnt Scrn key is hit The content outline is show below 1 2 Introduction and forewords Data Acquisition Software 2 1 Main Menu Description 2 1 1 Navigate Info Application 2 2 Hardware Settings User Inputs and Data View Menu Description 2 2 1 Hardware Settings 2 2 2 User Inputs 2 2 3 Data View 2 3 Using the Application 2 3 1 Hardware Initialization GPS Potential issues with GPS connection SiRFDemo Switching the GPS to NMEA Mode 2 3 2 User Inputs Details of Hardware Settings User Inputs and Data View 3 1 Hardware Settings Details 3 2 User Inputs Details 9 9 Data View Details IceRadar2 0 Manual 3 out of 31 2 Data Acquisition Software Before starting the software make sure both digitizer and GPS are connected to the computer Digitizer s power up state can be checked with a green LED found at the back of the unit It is also recommended to use the semi circular strain relief groove found on the base plane of the digitizer to secure the USB cable in its socket during operation Checking operation of the digitizer Use Max utility described later Checking GPS operation See setting GPS with SirfDemo described
12. logical grouping of locations where radargrams are acquired Each point measurement within a Line is linked to a subgroup object called a Location This object is in turn linked to the radar data the GPS data later the calculated depth data All these objects can have attributes Meta data associated to them All the data is consolidated into the hierarchical file system and can be accessed by the analysis routines IceRadar2 0 Manual 17 out of 31 j testi h5 g line D location D 9 ae datacapture D EX echogram D o location 1 e ae datacapture 0 EX echogram D o 2 location g line 1 o 2 location D o C location 1 o 23 location amp 23 3 OE location 4 o 2 location 5 Ej line 2 Typically a given glacier survey would be associated with a data file Each survey line would be a Line in the file system domain and each points where data is gathered along the Line would be a Location containing Radargram and GPS data at first and later picked data defining the depth Additional survey lines would be associated to additional file system Lines This data organization can be adapted to users need Each line could be a single file However with this model one would loose the benefit of not having to manage numerous files Now it is time to select create a data file Use the Open Create New File button to do so Open Create New Filertrtl F1 j Second a Line must be created or chosen
13. price of a Toughbook It is important to note that on the eeePCs the capacity of the solid state drive is significantly smaller than the capacity found on today s desktop and laptop computers This should be addressed by notinstalling additional software on the C drive keeping Microsoft Windows updates disabled The eeePC laptop must be considered as a field instrument and as such no other application should run when IceRadar is operating Additionally the laptop power settings were adapted to fieldwork The computer will remain ON even with a closed lid and it will neither hibernate nor go on standby All these settings can be changed and as such the user should be aware of the reasons behind them Microsoft Windows look and feel was set for Best Performance which is why the operating system does not presents the standard Windows XP interface To save battery life the wireless adapter was disabled and turned off If a carrying case is used such as a Pelican box make sure that the computer can cool off reasonably well On previous fieldwork even though never an issue the computer fan kicked in at several occasions on a sunny day due to warming around the computer and the protective case s foam Securing the USB connectors in place is also something to keep in mind If you change time zone do not forget to adjust the PC time as this may result in a different time between the PC and the GPS The main issue with time zone
14. the NMEA messages are GPGGA GPGSA GPRMC etc 0 Mih Radar View Baz GFPGGA 213425 000 4915 5569 N 12304 4373 Ww 1 05 3 1 10 2M 15 8 M 0000 50 GPG5A 5 3 22 13 14 32 11 5 0 3 1 5 23D GPARMC 21 3425 0 5 4315 5553 1 2304 4373 w 0 DU 2 70 303 A 55 GPGG4 213426 000 4915 5563 N 12304 4373 Ww 1 05 3 1 10 2 M 15 8 M D000 53 GPG 54 5 3 22 13 14 32 11 5 0 3 1 5 23D GPRMC 213426 0L 4315 5553 M 12304 4373 ww 0 DU 270303 GPGG4 21342 7 000 4315 5563 N 12304 4373 Ww 1 05 3 1 10 2 M 15 8 M 00052 OPSA A 3 22 13 14 32 11 5 1 3 1 5 230 GPG5Vv 3 1 12 14 B5 060 23 11 43 288 22 32 38 284 31 22 34 35 23 70 3PF35Vv 3 2 12 31 31 154 18 13 1 7 230 20 20 11 284 18 05 033 08 7 OPGSY aa 121704 338 12 03 058 03 03 02 7 30 00 031 14 7E GPRME 213427 000 4315 5553 M 2304 4373 w D DU 270303 A B GPGG4 213428 000 4315 5563 N 12304 4373 w 1 05 3 1 10 2 15 8 M DODUPSD OPSA A 3 221314 32 11 5 1 3 1 5 2730 GPRMLE 213428 000 A 4315 5553 M 2304 4373 w D DU 270303 A 58 GPGG4 213429 000 4315 5563 N 12304 4373 w 1 05 3 1 10 2 15 8 DOD0 5C GPG 54 5 3 22 13 14 32 11 5 1 3 1 5 2730 GPRMC 21 3429 000 5 4315 5553 M 12304 4373 w 0 DU 2 70309 A69 The connection can now be closed releasing the connection button And the SiFRDemo application can be closed Mh SiRFDe mo 3 87 T
15. through the threshold you specify with this parameter and has the slope you specify with the Trigger Slope parameter Units volts Valid Range The values of the Vertical Range and Vertical Offset parameters in niScope Configure Vertical determine the valid range for the Trigger Level on the channel you use as the Trigger Source parameter in niScope Configure Trigger Source The value you pass for this parameter must meet the following conditions Trigger Level lt Vertical Range 2 Vertical Offset Trigger Level gt Vertical Range 2 Vertical Offset Notes 1 This parameter only affects instrument behavior when you select a channel or the external trigger input as the Trigger Source You cannot configure the trigger level that the oscilloscope uses for other trigger sources trigger coupling The trigger coupling parameter can be either AC DC HF Reject LF Reject or AC Plus HF Reject This parameter works much like the vertical coupling parameter When AC is selected NI SCOPE rejects the DC component of the trigger signal When triggering on channel 0 or channel 1 of the digitizer the input signal is immediately coupled based on the vertical coupling parameter Therefore if the vertical coupling parameter is set to AC coupling triggering occurs on the AC components of the signal because the DC component has already been removed IceRadar2 0 Manual 27 out of 31 Trigger source Pass the source you want the oscilloscope
16. DK 3 1 00 07 C23P 1 00 on COM4 57600 Setup View Action Navigation Poll Window nu oy 11 22 13 14 32 20 31 at BF AD AD AD 2D 00 w Open Data Source Open Lag File Pause Display Initialize Data Source Switch ko NMEA Protocol Synchronize Protocol amp Baud Rate Switch En User Protocol Set Main Serial Part Set DGPS Serial Part Set UART Configuration Set Almanac Set Ephemeris Switch Operating Mode Set Low Power Trickle Power Set Message Rate Transmit Serial Message Switching to NMEA Protocol will first cause the NMEA Setup pop up to appear Here it is critical to select the correct communication speed one more time that is 57600 baud rate Selecting the NMEA message is not important here as this will be done automatically by the IceRadar application NMEA Setup EJ Update rate 1 n sec to 255 GGA 11 Cancel GLL 0 BSA n Set Defaults 35V 5 RMC 1 VTG o Baud rate 3600 Mss 0 User 8 0 Mate The User message rate User 9 E apply if the User has created new NMEA Output messages using the User 10 0 SDE User 8 outputs 4F204 by default I Use checksums IceRadar2 0 Manual 15 out of 31 Once in NMEA mode with the right connection speed the NMEA messages should be scrolling down on the Debug View Window indicating NMEA on the header bar Here
17. IceRadar2 0 Manual 1 out of 31 IceRadar 2 0 User Manual ver 1 0 1 Introduction and foreword IceRadar was developed to assist glaciologists in performing radar surveys on icefields and glaciers using portable and cost effective equipment IceRadar was developed by Blue System Integration Ltd BSI of Vancouver B C Canada www bluesystem ca info bluesystem ca 604 726 1817 IceRadar is a product developed with off the shelf hardware and customization in mind to maximize the value it brings to its end users It is distributed as a product including radar transmitter digitizer computer and software As such the system uses a pre installed software key that binds digitizer hardware and computer used for acquiring data Should one of these items be replaced please contact BSI for obtaining a new key Feedback and additional specific requirements are welcome as this product remains customizable The hardware and in particular the computer that is used to run the application has been selected to optimize portability low pricing and tolerance to shocks The Asus eeePC was found to fulfill these requirements It is one of the smallest laptop available today and while it is not a ruggedized computer like the Toughbooks class of laptops it is equipped with a solid state hard drive SSD with no moving part Once protected in a rugged box such as Pelican s the computer will be protected from dust rain and shocks at a fraction of the
18. RUMENTS Related Documentation Using Help See Fundamentals NI High Speed Digitizers Help Q Devices uU October 2007 370592L 01 Integration and System Considerations NI SCOPE Soft Front Panel This help file contains technical and programming support for the NI SCOPE instrument driver and the following National Instruments high speed digitizers e Programming perating System Support NI PXI PCI PCMCIA USB 5102 Glossary NI PXI PCI 5105 e Important Information NI PXI PCI 5112 2 Technical Support and Professional Services NI PXI PCI 5114 NI PXI PXIe PCI 5122 NI PXI PCI 5124 NI USB 5132 5133 Show Context Help opens closes a Context Help window with descriptions relating to the object under the mouse Shortcuts H Commit Settings Re Key Navigation F10 gt Toggle COMMIT CHANGES commit to hardware all the acquisition settings so once the hardware runs all the settings are already uploaded lt gt 0 Commit Settings F10 IceRadar and BSI are extra general information pop ups as well as contact information Application This menu is as follows 13 IceRadar 2 0 Navigate Pg up down Info Application Exit Ctrl Exit Exit the application Shortcuts ctrl X 2 2 Hardware Settings User Inputs and Data View Menu Description These are the three main windows available in the application Within each of them specific
19. Vertical Range 2 Vertical Offset Trigger Level gt Vertical Range 2 Vertical Offset Notes 1 This parameter only affects instrument behavior when you select a channel or the external trigger input as the Trigger Source You cannot configure the trigger level that the oscilloscope uses for other trigger sources low level IceRadar2 0 Manual 26 out of 31 Pass the voltage threshold you want the oscilloscope to use for edge triggering The oscilloscope triggers when the trigger signal passes through the threshold you specify with this parameter and has the slope you specify with the Trigger Slope parameter Units volts Valid Range The values of the Vertical Range and Vertical Offset parameters in niScope Configure Vertical determine the valid range for the Trigger Level on the channel you use as the Trigger Source parameter in niScope Configure Trigger Source The value you pass for this parameter must meet the following conditions Trigger Level lt Vertical Range 2 Vertical Offset Trigger Level gt Vertical Range 2 Vertical Offset Notes 1 This parameter only affects instrument behavior when you select a channel or the external trigger input as the Trigger Source You cannot configure the trigger level that the oscilloscope uses for other trigger sources high level Pass the voltage threshold you want the oscilloscope to use for edge triggering The oscilloscope triggers when the trigger signal passes
20. _timestamp_UTC wave speed in ice m s Free on v0 _ Lat N 1 70 8 T Free on vg Long W mdi ACE is pea Selected file size 0 Fix Quality z Num _Sat Dilution Alt_asl_m Geoid Heigh m GPS Fix valid EM GPS Message ok m Open Create new file Browse directory structure to open or create a new file Create Select new line Create or Select a Line A Line represents a logical grouping of radargrams Typically a pre defined path will be followed along which radar data will be acquired All this data will belong to a Line Check File space Check two user selectable volumes for size Warning is given when the space left on either volume is smaller than 25 of the current file size Show tip strips Turn tip strips on or off Enable GPS data capture GPS data saving is enabled when active Otherwise no GPS data are saved GPS Serial Port GPS Port selection 3 3 Data View Details IceRadar2 0 Manual 29 out of 31 AA A AAA AAA Sald Mavigate Info Application v Browse ctri F10 Approx Horiz Scale m div 87 9 Digitizer Horizontal Span 391 Equivalent Ice Depth m MB Triggers received 1 Radar Signal V lt 10 0mV Data Save Mode F9 Sus None Semi Auto 20 0m 500ns Os 105 5 mV GPS Fix MM 2us 3us 4us 2 Time s H Radargram bail ColorScale Show Line 2D Profile ctr F9 v Radar Signal Auto Scale HAR AN M
21. amongst already existing Lines Create Select Line Ctrl FzZ IceRadar2 0 Manual 18 out of 31 i3 Create Select Line Source File CA Documents and Settings Laurent Desktop test AS LineSystemMame LineoivenName Comments Creation Timestamp Create Mew Line Select Line Pending New LineSystemMame Line given name 20 char Linie comments Max 100 char line 0 Default line system name Create Line Enter Cancel esc The above pop up will allow to create a first Line in a new file line 0 Lines have a system name that cannot be changed a given name that is user defined and a comments attribute Hit Create Line to create a new line The new active line can be seen at the top of the Data View window above the radargram graph object 13 IceRadar 2 0 Navigate Pg up down Info Application line O 714m 10 0m TI G 0 07 m 10 0mv o 71 6m GPS Fix a 300ns Os 300ns luz Zus us Pal SRE L LLa J Radar Signal Auto Scale Time 5 Helk Radargram Checking disk space is recommended First use the drop down to choose up to two volumes or hard drives on the computer Check Ctrl F4 Free on 8 0 Selected Second click on Check Ctrl F4 to check the data file size IceRadar2 0 Manual 19 out of 31 Each data file can be composed of as many Lines as necessary We are now ready to acquire data Select the Data Save Mode F9 first to None to che
22. anual Auta m 25 0 5 75 100 125 150 175 200 225 250 275 300 325 350 375 400 425 450 475 500 525 Se RS Stacking F7 1 Auto cycle Delay s F8 5 Enable GPS data capture F1 ACQUIRE F4 55m 75m pause 5 F5 95 m Lat 115m Long 135m Satellites 155m GPS Fix valid REN GPS Message ok MN 175 m 195 GPSSingle Read F12 215m 235m BB 29 3 Data Save Mode Shortcut F9 to select then arrows to navigate This setting selects the mode of acquisition None No data savings is performed in this mode When Acquire F4 is clicked a radargram is acquired and displayed Use this mode to check if everything is working as expected positioning the antenna the GPS etc Manual Data are saved and a Location is user defined via a pop up each time the Acquire button is clicked Use this mode at a Location that requires a more precise definition such as the beginning of a Line a survey pole etc Semi Auto Data are saved and a Location is automatically created with incremental name Location 1 Location 2 each time the Acquire F4 button is clicked No pop up is open Use this mode to manually control the rate of data saving This mode is useful when some maneuvering is required in crevasse area for instance where not much ground is covered It allows to just acquire data when needed and save disk space if the high data acquisition rate was instead used Auto
23. arget 5 Setup View Action Target Sw Data Source GPS Time PL Time Preferences About SiRFDemo Exit IceRadar2 0 Manual 16 out of 31 Now it is time to start IceRadar again and check the GPS Mode one more time Check GPS Mode F2 _ After a few seconds the Test GPS Utility should show GPS readings with the Change Detected Message Updated GPS Reading id bi GPS String GPS Data Cluster Details Tabbing F4 then Left Right arrows Manual Poli C D 214106 000 4915 5553 12304 4461 05 Change Detected 214104 000 4915 5555 12304 4459 05 Change Detected Clear readings F12 C 514102 000 4915 5544 12304 4451 04 Change Detected 214100 000 4915 5531 12304 4447 05 Change Detected 214058 000 4915 5509 12304 4444 05 Change Detected Clear Error del C WD 214056 000 4915 5485 12304 4449 05 Change Detected error out 214045 000 4915 5418 12304 4441 05 Change Detected status code 214043 000 4915 5370 12304 4446 05 Change Detected Soke P GPS Fix valid GPS Message Ok 2 3 2 User Inputs IceRadar uses a hierarchical data format to store information The file format being self describing it allows an application to interpret the structure and contents of a file without any outside information Data are first grouped into a top level object called a Line that represents a given path on the glacier where point measurements were taken A Line represents a
24. argram plot approximate span This gives an approximation on the depth equivalent time read on the plot Missed some triggers If triggers are missed the stacking data remains valid as the actual number of triggered radargrams is used in the stacking computation
25. as low as about 2 seconds When Stacking is set to 50 or less the Auto Cycle Minimum setting is 1 second which will lead to an effective sampling rate as low as 1 to 2 seconds This limitation has been implemented to insure low overhead on the processors to increase reliability and insure the application can acquire data on Auto for hours at a time we are still running Windows after all Future releases of National Instruments USB Digitizers will likely include more advanced hardware capabilities which can be implemented in future versions of IceRadar Quick Data Browsing To quickly check data that were previously acquired it is possible to select a Line that was already acquired and to display its data with the Show Line 2D Profile button Then as shown on the image below selecting the Browse option will allow the selection of a specific location and browse amongst its associated radargram as referenced by its location number This number corresponds to the x axis of the 2D graph Note that the 2D graph scale can be changed by clicking on the first and last number of the scale and typing the new scale limit value IceRadar2 0 Manual 21 out of 31 Mavigate Info Application location 65 Browse ctrl F10 21 4m location 51 location 52 hpprox Horiz Scale m div 87 9 3 10 0m location 53 Dover Horizontal Span 3g 5 quivalent Ice Depth m
26. ck the readings and hit Acquire a few times to start building a 2D representation of the data In the example below a virtual digitizer is being used and therefore the radargram produced is a sine wave T3 IceRadar 2 0 Mavigate Info Application line 12 Browse ctrl F10 20 0mV MT Approx Horiz Scale m div 87 9 10 0m cd E PUN d np 391 5 t quivalent Ice Depth m 5 ll Triggers received 100 10 0m Data Save Mode F9 20 0m 5 mV GPS Fix hal 500ns Os 1us 2us 3us 4us Sus None Semi Auto Time s H Rm Radargram AN ColorScale Show Line 2D Profile ctr F9 v Radar Signal Auto Scale HAR Manual Auto m 1 2 3 4 5 6 7 8 9 a ee Se e E EE E ae he Seth Sra eee ret Eu LT 25 m 0 Stacking F7 100 v m Auto cycle Delay s F8 2 15m Enable GPS data capture F1 35 m ACQUIRE F4 55m mags PAUSE F5 95m Lat 4915 5476 Long 12304 4450 135m Satellites 05 115m 155m GPS Fix valid GPS Message ok 175m 195 5 GPS Single Read F12 215m 235 m BH wm All the modes of acquisition are now ready to be used If the Manual Mode is used a Create Select Location pop up will appear to describe the Location Similarly to the Create Select Line pop up a Location has a system name given name and description T3 Create Select Location Source File Parent Line ri Documents and Settings Laurent Desktop test
27. e and passes through the hysteresis window you specify You configure the trigger level slope and hysteresis with niScope Configure Hysteresis Trigger Digital Configures the oscilloscope for digital triggering A digital trigger occurs when the trigger signal has the the specified slope You configure the trigger slope with niScope Configure Digital Trigger Window Configures the oscilloscope for window triggering A window trigger occurs when the trigger signal enters or leaves the window defined by the values you specify with the Low Window Level High Window Level and Window Mode parameters You configure the window with niScope Configure Window Trigger trigger delay Pass the length of time you want the digitizer to wait after it detects the trigger before it marks the Reference Position Units Seconds reference position When the oscilloscope detects a trigger it waits the length of time you specify with the Trigger Delay parameter of niScope Configure Trigger Source and marks this spot as the Reference This parameter sets where this Reference is positioned in a record as a IceRadar2 0 Manual 25 out of 31 percentage of the total record For instance a value of 25 0 means 25 of the acquired data will be pretrigger samples and 75 will be posttrigger samples Units Percentage Valid Range 0 0 100 0 trigger level Pass the voltage threshold you want the oscilloscope to use for edge triggering The oscilloscope t
28. fset The following table shows the valid vertical offset for each range on the NI 5132 5133 Input Range Maximum Signal Swing ae Vertical Offset Range Plus Offset pum Must Be Below vertical coupling The NI 5132 5133 has software selectable AC DC and GND coupling Select AC coupling if the input signal has a DC component that you want to reject provided you are not concerned about low frequency flatness A DC input adjustment is available if you do IceRadar2 0 Manual 23 out of 31 not want to enable AC coupling Ground coupling internally connects the input to the local ground Channel Channel Max Input Frequency 20 maximum input frequency Specify the bandwidth of the channel expressed as the frequency at which the input circuitry attenuates the input signal by 3 dB The NI 5132 5133 has a software selectable 20 MHz noise filter that limits the bandwidth of the signal path The filter is intended to reduce noise when the input signal content is 20 MHz or less Units Hertz Valid Values 20Mhz 50Mhz no filtering If the signal is not noisy EM noise the no filtering option is recommended as the 20Mhz filter somewhat attenuates the air waves in the upper part of its spectrum Horizontal Horizontal sample rate 100M 5 record length 512 sample rate Specify the sampling rate for the acquisition Units Hertz Samples Second Valid Range The combination of sampling rate and min record length must a
29. functionality is accessed 2 2 1 Hardware Settings Shortcuts ctrl 1 IceRadar2 0 Manual 5 out of 31 The Hardware Settings window gives access to all the important digitizer hardware parameters Once these settings are done they should normally not changed very often Anytime a hardware setting is changed committing the settings is required via the Commit Setting F10 button If not commit is done the application will pop a message box Navigate Pg up down Info Application Hardware Settings Channel Trigger Selection Specific Parameters Input Frequency SOM Type Edge v Trigger Level 0 035 Siope Slope Source Channel 0 v Hysteresis 9 000 Vertical Negative Vertical Range v 0 400 Common Parameters Not all parameters apply to all trigger types Entering 3 Vertical Offset 0 0000 Trigger Delay 0 0000 Window Low Level 0 00 5 Tm dus vertical coupling Jj Ground Ref Position 9 9 10 Window High Level 0 00 Leaving Horizontal Keep cst in given Line sample rate 100M Trigger Modifier None v Trigger Coupling 9 DC record length 256 o Channel Name s Commit Settings F10 CLEAR HW F6 10M Actual Sample Rate 1000 Actual Record Length NI USB 5133 at Dev2 sn n a Virtual Device Change Digitizer Unit Check GPS Mode F2 GPS Serial Port Change GPS Unit 2 2 2 User Inputs Shortcuts ctrl 2 The User Inputs window allows the user to input
30. he Change Detected footer will appear Only a Manual Poll F1 will produce a reading If this is the case the GPS Disabled Static Mode must be activated that is Static Mode disabled It is explained at the end of the section detailing Potentiallssues with the GPS connection IceRadar2 0 Manual 11 out of 31 Potential issues with GPS connection piesa EIE e GPS String GPS Data Cluster Details Tabbing F4 then Left Right arrows Manual Pall F1 lt Init Poll Clear readings F12 C STOP esc Clear Error del C error Out X 1 1073807253 I5A Read in VISA Readwrite vi gt Core i gt GPS_Poll_ GGA vi gt Poll Check vi gt GPSConnectioncheck vi GPS Fix valid REM r GPS Message OK RENI It is possible that the Test GPS Reading returns and error like on the example above This can happen when the GPS is left turned OFF for a long period of time or when its current geographical location is significantly different from the last location the GPS was operating at If this is the case Stop the Test GPS Reading utility exit IceRadar and launch SiRFDemo P SiRFDemo SiRFDemo is an utility provided by the GPS chip manufacturing company This product is View Action Navigation Poll Window Serial Port Baud Rate 57600 Random m Virtual Serial Port Data Piping Create Virtual Serial Port Pott Protocol NMEA z Aux Data
31. ined in the next section 7 223 Device Manager File Action View Help Note on GPS port selection E F Selecting the GPS only requires to pick the right serial port used by the USB serial driver If the port 2 gy ec s Batteries X Computer See Disk drives a Display adapters 4 DVDICO ROM drives eta Human InterFace Devices ic IDE ATA ATAPI controllers Imaging devices cu Keyboards Ly Mice and other pointing devices Modems EL Monitors 231 Multi port serial adapters 88 Wetwork adapters is not known click Check Ports Alternatively the devmgmt msc command can be run from the DOS prompt This will open the Device Manager and Will show the Prolific USB to Serial Comm Port in the Ports COM amp LPT section that is used by the GPS In the example below the GPS is operating via virtual serial port 4 Note that if no GPS is connected to the computer the Prolific device will not appear LER ERR E E ERES ERES Digitizer 8 PCMCIA adapters JU Ports COM amp LPT If the Digitizer device is properly connected to the P NN computer it will show with its serial number JJ Digi One SP Port 1 COMZ 2 ECP Printer Port LPT1 E Prolific LISE En Serial Comm Pork COIT m Processors Sae Smart card readers Sound video and game controllers System devices Universal Serial Bus controllers H IceRadar2 0 Manual 8 out of 31 13 Select Digitizer EJ Select Device
32. later 2 1 Main Menu Description 2 1 1 Navigate Info Application Shortcuts alt to activate arrows to scroll left right and down a submenu then Enter to select Navigate Navigate Pg up down Info Application Hardware Settings Ctril 1 User Inputs Ctrlt 2 Daka View Ctrl 3 This menu gives accces to the three main views available in the application Hardware Settings User Inputs and Data View Shortcuts PageUp and PageDown can be used to go from page to page Alternatively ctrl 1 ctrl 2 ctrl 3 give direct access to the corresponding page Info Navigate Pg updown Info Application Show Digitizer Help CErl D JZ Show Context Help Ctri H 21 4 IceRadar 10 0 BSI This menu gives access to the various helps available in the application Show Digitizer Help provides all the hardware information relating to the digitizer This is a very comprehensive Help that describes all the digitizer hardware settings and the way the digitizer works It is a general purpose discussion and does not directly describe the IceRadar application Most of the relevant information is found in the Device NI 5132 5133 section and in the Fundamentals section of the NI High Speed Digitizers Help IceRadar2 0 Manual 4 out of 31 Shortcuts ctrl D g NI High Speed Digitizers Help aaz r Hide Locate ptions Contents Index Search Favorites NATIONAL NI High Speed Digitizers Help INST
33. llow the scope to sample at a valid sampling rate for the acquisition type specified in NI Scope Configure Acquisition and not require more memory than the onboard memory module allows record length Pass the minimum number of points you require in the record for each channel Call niScope Actual Record Length after the acquisition has been initiated to obtain the actual record length used Valid Values 1 available onboard memory Trigger IceRadar2 0 Manual 24 out of 31 Trigger Selection Specific Parameters ES Type Edge v Trigger Level 0 005 t i Slope vi Hysteresis Source Channel 0 y 0 000 Negative PT PE ea PNE Not all parameters apply to all trigger types Entering Trigger Delay 10 0000m Window Low Level 0 00 Window Mode Ref Position 9 5 10 Window High Level 0 00 Leaving Trigger Modifier Auto gt Trigger Coupling Trigger type Pass the type of trigger you want the oscilloscope to use and then call the appropriate VI to completely configure the trigger Valid Values Edge Configures the oscilloscope for edge triggering An edge trigger occurs when the trigger signal crosses the trigger level specified with the set trigger slope You configure the trigger level and slope with niScope Configure Edge Trigger Hysteresis Configures the oscilloscope for hysteresis triggering A hysteresis trigger occurs when the trigger signal crosses the trigger level with the specified slop
34. ound Ref Position 10 Window High Level 0 00 Leaving Horizontal Keep cst in given Line SAT sample rate 100 Trigger Modifier None Trigger Coupling 2 Dc record length 256 Name s Commit Settings F10 CLEAR HW F6 10M Actual Sample Rate 1000 Actual Record Length NI USB 5133 at Dev2 sn n a Virtual Device Change Digitizer Unit GPS Serial Port Change GPS Unit Check GPS Mode F2 Vertical IceRadar2 0 Manual 22 out of 31 Vertical Vertical Range v 0 010 Vertical Offset 0 0000 vertical coupling 3 Ground vertical range Pass the value of the input range the oscilloscope uses for the channel For example to acquire a sine wave that spans between 5 0 and 5 0 volts pass 10 0 as the value of this parameter Units Volts Valid Range Check the Hardware User s Manual for a device s list of supported vertical ranges If the specified range is not supported by a device the value will be coerced up to the next valid range vertical offset Pass the location of the center of the range that you specify with vertical range Express the value with respect to ground For example to acquire a sine wave that spans between 5 0 and 5 0 volts pass 0 as the value or for a sine wave that spans between 0 0 and 10 0 volts pass 5 0 as the value and set Vertical Range to 10 0 volts Units Volts Valid Values NI USB 5132 5133 Vertical Of
35. riggers when the trigger signal passes through the threshold you specify with this parameter and has the slope you specify with the Trigger Slope parameter Units volts Valid Range The values of the Vertical Range and Vertical Offset parameters in niScope Configure Vertical determine the valid range for the Trigger Level on the channel you use as the Trigger Source parameter in niScope Configure Trigger Source The value you pass for this parameter must meet the following conditions Trigger Level lt Vertical Range 2 Vertical Offset Trigger Level gt Vertical Range 2 Vertical Offset Notes 1 This parameter only affects instrument behavior when you select a channel or the external trigger input as the Trigger Source You cannot configure the trigger level that the oscilloscope uses for other trigger sources hysteresis Pass the voltage threshold you want the oscilloscope to use for edge triggering The oscilloscope triggers when the trigger signal passes through the threshold you specify with this parameter and has the slope you specify with the Trigger Slope parameter Units volts Valid Range The values of the Vertical Range and Vertical Offset parameters in niScope Configure Vertical determine the valid range for the Trigger Level on the channel you use as the Trigger Source parameter in niScope Configure Trigger Source The value you pass for this parameter must meet the following conditions Trigger Level lt
36. the Wave Parameters notably the wave T3 IceRadar 2 0 GJ Navigate Pg up down Info Application User Inputs Open Create New File Crtl F1 Create Select Line Ctrl F2 v Show tip strips 3 GPs timestamp UTC wave speed in ice m s Free on v0 _ Lat N 1 70E 8 T Free on vo Long W SUS ELE step Selected file size 0 Fix_Quality Num Sat Dilution Alt as m Geoid Heigh m GPS Fix valid mE GPS Message ok IceRadar2 0 Manual 6 out of 31 velocity in air the wave velocity in ice and the antenna spacing Note that the wave parameters are not saved to file This windows also is used to set which data file is going to be used and which data Line is being acquired Next the user can select two volumes or hard drives present on the system to check their size comparatively to the data file This is important for solid state HD equipped laptops like the eeePC because drive capacity is significantly smaller than today s rotating drives Finally this window also provides the user with the full GPS reading parsed from the GAA NMEA message Check tCtr F4 Free v 0 i 2 2 3 Data View Shortcuts ctrl 3 T3 IceRadar 2 0 Mavigate Info Application v v Browse ctri F10 Approx Horiz Scale m div 87 9 Digitizer Horizontal Span Equivalent Ice Depth m la Triggers received 1 391 Radar Signal VW lt 10 0mV Data Save Mode F9
37. to monitor for a trigger Channel name Pass the channel name you want to configure Valid Values 0 n 1 n is the number of channels on the NI SCOPE device Trigger window mode trigger slope All these descriptions can be found in the Digitizer Help File Trigger Modifier Configures the device to automatically complete an acquisition if a trigger has not been received None Normal triggering Auto Trigger Auto trigger acquisition if no trigger arrives Clear Hardware Settings CLEAR HY Fe CLEAR HW releases all the acquisition settings from the hardware COMMIT SETTINGS have to be done before starting a new acquire once a CLEAR HW is sent Commit Settings Commit Settings F10 COMMIT CHANGES commit to hardware all the acquisition settings so once the hardware runs all the settings are already uploaded actual record length Actual number of points the digitizer acquires for each channel The value is equal to or greater than the minimum number of points you specify with a horizontal configuration function actual sample rate Returns the effective sample rate in samples per second of the acquired waveform using the current configuration IceRadar2 0 Manual 28 out of 31 3 2 User Inputs Details E Navigate Pg up down Info Application User Inputs Open Create New File Crtl F1 Create Select Line Ctrl F2 v Show tip strips 4 TS zu si me GPS
38. uto for hours at a time we are still running Windows after all Future releases of National Instruments USB Digitizers will likely include more advanced hardware capabilities which can be implemented in future versions of IceRadar Enable GPS data capture Shortcut F1 If selected the GPS data will be saved with the radar data GPS Single Read Check GPS by reading position once Shortcut F12 Performs one GPS read No data saving are associated with this action Radar Signal Auto Scale Auto Scale Radargram ShowLine2DProfile Retrieve all data in a Line and plot radargrams data with color scaling versus time generating a 2D color plot Browse Shorcut ctr F10 Enables the Location drop down and acquired data browsing When Browse is enables no acquisition can be performed Similarly acquisition must no be running for this control to be accessible Location Shorcut ctrl F12 IceRadar2 0 Manual 31 out of 31 When Browse box is selected this drop down allows the user to select a Location and display its radargram All datagrams in a Line must have been retrieved first on the waterfall plot for being accessible Color Scale Color scale for the waterfall plot Make sure Interpolate Color remains selected in the color scale Approx Horiz Scale m div Single radargram plot scale This gives an approximation on the depth equivalent time read on the plot Digitizer Horizontal Span Equivalent Ice Depth m Single rad
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