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VLF Data Acquisition Software User Manual
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1. Narrowband Timing Number 9 CORE ia HH MM SS HH MM SS Preyioud Next add Delete Start fo fo fo Feriod jo fo fo F Use this channel s timing for all chanrels End fo fo fo Curation f0 0 fo Sample Walk Through of a Simple Acquisition This tutorial will walk through the steps necessary for the following BROADBAND e Setup 2 continuous broadband channels acquiring from 3 30 to 3 00 23 5 hours of the day e We want the continuous broadband files to be split into 30 minutes segments e The broadband data will be filtered with a cutoff of 12500Hz e The broadband data will be sampled at 100kHz NARROWBAND f e Setup 2 synoptic narrowband channels acquiring data the first 5 minutes of each day starting at 0 00 and ending at 12 05 e The narrowband data will be filtered with a cutoff of 200Hz e The narrowband data will be from the NLK transmitter mixed down from 24800 Hz e The narrowband will be sampled at 50Hz e The narrowband data amplitude will be scaled by a calibration factor of 5 e We will run the synoptic cleanup batch file for the narrowband data e The narrowband data will be FTPed to vlf europe stanford edu at 23 30 1 Setup the necessary hardware a Install a 200kHz NIDAQ ADC card in the PCI slot of the computer b Install the NIDAQ software and properly assign the ADC card to be device number 1 using the NIDAQ software Contact Eddie Kim for a copy of the NIDAQ software c Attach the line rec
2. Previc Next Add Delete stt 3 fo f0 Period ofofo I Use this channel s timing for all channel End fofo Duration 0 fo fo NARROWBAND The software supports multiple channels of Narrowband data acquisition To add a channel simply click on the add button in the Select Narrowband Channel section The save data to disk checkbox if unchecked will delete the data on the harddrive after it has been FTPed The FTP data check box will FTP data using the specified FTP setting which can be selected from the pull down menu The synoptic clean up checkbox if checked will run the synopticCleanup bat file after every synoptic acquisition The Do Low Res check box will create a matlab file containing 1 Hz data in addition to the regular settings of this channel The spheric channel check box indicates if the channel is used for spheric detection The MSK modulated check box if checked will remove the phase modulation in the signal For each channel the user must specify which ADC card to acquire data from Also the user must specify which of the 2 channels usually north south or east west on the ADC card to acquire from For each channel the user can specify the Sample frequency that data will be acquired at The 100kHz data will be decimated down to this frequency For each channel the user can specify a filter setting to be used from the filter settings created in the filter GUI For each channel the user m
3. at 13 30 fo pz Delote directoies after 20 days Previous Next Add Delete a Enter vlf europe stanford edu under Host IP Address b Enter 21 under Host Port Number c Enter the ftp username under username d Enter the ftp password under password e Check FTP file f Enter 23 30 00 under FTP file starting at g Enter 3 30 00 under end at This will give 4 hours to FTP the files h Enter vlf europe for FTP name i Click OK 15 Click OK on the FTP Setting Dialogue 16 Click OK on the Communications Settings dialogue box 17 Click on Data Processing Data Processing Create Modify Filter Settings 0K FFT Settings Cancel Superposed Epoch 18 Click Create Modify Filter Settings Create Modify Filter Settings Filter number fi a Unique filter name EMS Hz Cancel Number of taps fi Cutoff fiequency fa H Sample frequency Hz Decimate to fi Hz Filter From Fie CAMpDAQ iters bb_fiter 250 Remove Previous Newt Add Delete a Click Add b Enter NB200 under Unique Filter Name c Click on Filter from File Open Ea xi Look n 5 fles amp Fae Pe 4 bb_fiterL 2500 cat My Recent Documents My Documents z Ki My Computes K File name fib flie dal Meera Fies oftype crea Places TP Opens read only d Navigate to the Filter directory and select the file nb_filter dat e Click OK
4. filter file simply contains the filter coefficients of a filter these filter files can be created through matlab Sample filter files are included on the filter folder For each filter setting the user should specify a filter name Create Modify Filter Settings Filter number fo OK Unique filter name 5000 Hz Carpal Number of taps fo Cutoff frequency f0 Hz Sample frequency 0 Hz Decimate to fi Hz Remove Next Add Delete BROADBAND The software supports multiple channels of Broadband data acquisition To add a channel simply click on the add button in the Select Broadband Channel section The save data to disk checkbox if unchecked will delete the data on the harddrive after it has been FTPed The FTP data check box will FTP data using the specified FTP setting which can be selected from the pull down menu Note that FTPing of broadband data is not recommended because of the size of the files The synoptic clean up checkbox if checked will run the synopticCleanup bat file after every synoptic acquisition The user may edit synopticCleanup bat file to do anything For each channel the user must specify which ADC card to acquire data from Also the user must specify which of the 2 channels usually north south or east west on the ADC card to acquire from For each channel the user can specify the sample rate that data will be acquired at The 100kHz data will be decimated down to this sample ra
5. to select the filter file f Click Add g Enter BB12500 under Unique Filter Name h Click on Filter from File i Navigate to the Filter directory and select the file bbfilter_1250 dat j Click OK to select the filter file k Click OK on the Create Modify Filter Settings GUI 19 Click OK on the Data Processing GUI 20 Click on the Broadband Settings button a Click on Add in the Select Broadband Channel section b Click save data to hard drive c Select 100kHz for sample frequency d Select BB12500 for primary filter e Select ADC1 for A D card f Select 1 for A D channel number g Click on Add in the Set Acquisition Timing section h Select Continuous radio button 1 Enter 03 30 00 for Start J Enter 03 00 00 for End k Enter 00 30 00 for Period 1 Enter 00 30 00 for Duration m Click on Add in the Select Broadband Channel section n Click save data to hard drive 0 Select 100kHz for sample frequency p Select BB12500 for primary filter q Select ADC1 for A D card r Select 2 for A D channel number s Click on Add in the Set Acquisition Timing section t Select Continuous radio button u Enter 03 30 00 for Start v Enter 03 00 00 for End w Enter 00 30 00 for Period x Enter 00 30 00 for Duration y Click OK Broadband Acquisition Settings Heal Time Proce
6. Calibration Factor 1 Select 50Hz for sample frequency j Select NB200 for primary filter k Select ADC1 for A D card 1 Select 1 for A D channel number m Click on Add in the Set Acquisition Timing section n Select Synoptic radio button o Enter 00 00 00 for Start p Enter 13 00 00 for End q Enter 00 05 00 for Duration r Enter 01 00 00 for Period s Click on Add in the Select Narrowband Channel section t Click save data to hard drive u Click FTP data v Click Synoptic Cleanup w Enter NLK under Channel Name x Enter 24800 for Center Frequency y Enter 5 for Calibration Factor Zz Select 50Hz for sample frequency aa Select NB200 for primary filter bb Select ADC1 for A D card cc Select 2 for A D channel number dd Click on Add in the Set Acquisition Timing section ee Select Synoptic radio button ff Enter 00 00 00 for Start gg Enter 13 00 00 for End hh Enter 00 05 00 for Duration ii Enter 01 00 00 for Period jj Click OK 23 Click OK for Narrowband Settings GUI 24 Click Save on the main dialogue 25 Click Exit on the main dialogue 26 Restart the computer The software should startup automatically at the start of the computer and the data acquisition will begin
7. Stanford When narrowband data acquired it will create matlab filename according to the new filename format XXYYMMDDHHMMSSZZZ_ACCT mat XX Station ID from Station Information Dialogue Box YY Year MM Month DD Day HH Hour MM Minute SS Second ZZZ Transmitter Callsign A zero based index of the ADC card that was used CC zero based index of the software channel number that was used T Amplitude Phase or Lo High Resolution A corresponds to Lo resolution 1hz sampling rate amplitude B corresponds to Lo resolution 1hz sampling rate phase C corresponds to high resolution amplitude D corresponds to high resolution phase Broadband files are named according to the following convention XXYYMMDDHHMMSS_ACC mat XX Station ID from Station Information Dialogue Box YY Year MM Month DD Day HH Hour MM Minute SS Second A zero based index of the ADC card that was used CC zero based index of the software channel number that was used Station Information Station name Stanford Station ID st Cancel Contact Edward Kim Address ctrl enter for new line Phone number 951 4401537 Email edward kim stanfor Last visil March 8 2005 Installa ion date March 8 2005 URL ar stanford 2du viF Stanford Tesi Site Description HARDWARE INFORMATION This is where the user can enter the hardware setup of this station Note that the user can enter multiple Preamp serial numbers by simply c
8. Very Low Frequency Data Acquisition Software User Manual Robert Moore Edward Kim Revised 6 March 2005 Table of Contents Introduction 3 Installing the Software 4 Overview of the Software 5 13 Sample Walk Through of a Simple Acquisition 14 25 Introduction VLF DAQ stands for Very Low Frequency Data Acquisition It is a data acquisition software designed for capturing and processing broadband and narrowband VLF signals It works in conjunction with a TrueTime GPS receiver and 1 or more ADC cards in the PCI slot Though many different hardware configurations are possible with the software the most common setup is illustrated below North South Receiver GPS Receiver DAQ T ina RP anaivor The line receiver gets VLF signals from 2 antennas There is usually one antenna in the North South orientation and another in the East West orientation These signals are sent to a 200kHz ADC card attached to the PCI slot of the computer The ADC will capture data from each of the 2 antennas at 100kHz each The signal from the GPS is fed into the ADC card The VLF DAQ software controls precisely when the system should acquire broadband and narrowband data Upon data acquisition various user specified signal processing can be performed on the data The data is then converted to MATLAB format and may be sent to another computer via FTP The VLF DAQ is designed to be robust even when multiple channels of synoptic b
9. ample c HAILSoftware hftp_get exe c HAILSoftware hftp_get cfg DAQ_SoftwarePackage c VLF_DAQ dailyCleanup bat will copy e DAQ_SoftwarePackage dailyCleanup bat of the server computer into c dailyCleanup bat of the remote computer IMPORTANT NOTE The drive letter that the remote computer FTPs into must be the same drive that contains DAQ_SoftwarePackage In hail stanford edu all incoming FTPs are directed to the E Thus we must place the DAQ SoftwarePackage directory in the E After all the program files are copied the batch file has the following line c HAILSoftware hftp_get exe c HAILSoftware hftp_get cfg DAQ_SoftwarePackage c WLF_DAQ DownloadNewSoftware bat This line should be included in the batch file only for the FIRST installation of the software package Any subsequent updated of the software should not contain this line This line will update the DownloadNewSoftware bat file that is run on the remote computer anytime update new software is called from the Communicator The new DownloadNewSoftware bat file found in DAQ_ SoftwarePackage directory will instruct the remote computer to look for DownloadNewSoftwareNext bat file in c WLF_DAQ from now on instead of c HAILSoftare Thus in subsequent updates of the software the remote computer will look in the VLF_DAQ directory for DownloadNewSoftwareNext bat file instead of the HAILSoftware Directory The rest of the lines will download the filter fi
10. e These include the station name installation date GPS latitude GPS longitude GPS date GPS time and GPS quality In the area entitled Next Acquisition the start and end time of the next acquisition is displayed Below there is a progress bar which fills up as the acquisition is completed Below the progress bar the general status of the software is displayed Any errors are also displayed in this area as well PASSWORD A password is required to enable any buttons on the DAQ software This is to prevent unauthorized changes to the software settings SAVE Any changes that are made to the software settings must be followed by a click on the save button in order for changes to take effect Additionally the software must be restarted for the saved changes to take effect RESTORE SETTINGS This button restores the software settings to the last saved values EXIT This button will close out any current data acquisitions and end the program STATION INFORMATION This is where the user can specify the various characteristics of the station that the software is installed at With the exception of StationID and Station name the fields in this GUI do not directly affect the data acquisition It should be used as reference when studying data acquired Station name indicates the directory that the files will be FTPed to For example if Stanford is entered as Station Name the files will be FTPed to the a directory called
11. ect 200kHz f Click OK 9 Click on Serial Settings COM port il Baud rate 9600 Cancel Byte size E Buffer size 2048 Parity NONE x Stop bits if Motorola GPS system should use the following settings Baud rate 9600 Byte size 8 Buffer size 2048 Parity None Stop bits 1 Click OK 9 Click on Antenna Settings and enter as much information as you can about the antenna setup A copy of all this data is saved in the settings file which is important to consult when studying your acquired data Antenna Properties Number of antennas A Antenna impedance as Cancel Wire gauge e Wire length 1 turn he Number of turns oOo Latitude a Area of 1 turn rs Longitude je Antenna height e Altitude i Antenna base lengta Anan beams Antenna shape Antenna descriptior 10 Click OK on the Antenna Settings Dialogue Box 11 Click OK on the Hardware information dialogue box 12 Click Communication Settings OK FIP Settings __ Cancel Network Settings IV Have Internet Access 13 Check Have Internet Access 14 Click FTP Settings FTP Settings FTP Setting Number jo FTP Name Host IP Address vlreurcpe stanfor Usemame hai cece Host Port Number 2 Password 5x Host Data Ditectory WLFTEST a ss S FTP file upon file completion i Coweta IV FTP file starting at 23 30 o F Delete bin fileupon successtu FTP end
12. eiver to the ADC card d Attach the GPS receiver to the ADC card Contact Morris Cohen for instructions on how to do steps c and d 2 On the computer install the software package 3 Make sure SPYSWEEPER and NORTON ANTIVIRUS scheduled scans are disabled 4 Run the VLF_DAQ_console_only exe This allows the user to change settings or the software without fear of data being acquired while settings are being changed 5 Enter the password in the password box Stanford University LF DAQ Sate ea O estore Settings 6 Click on Station Information and enter as much information as you can about the site A copy of all this data is saved in the settings file which is important to consult when studying your acquired data Station Information Ee Edward Kim 951 440 1537 edward kint stanfor aroma ae March 8 2005 ar stanford 2du Stanford Test 7 Click OK on the Station Information Dialogue Box 8 Click on Hardware information and enter as much information as you can about the hardware setup of the site Hardware Information a Click on ADC Settings ADC Information A D card number pooo E Unique card name fapci Cancel Device number i Card SN rs Card type ae Previous Next Add Delete b Click Add c Type in ADC1 for Unique Card Name d Type in 1 for Device Number e Under Card type sel
13. h the server computer The server computer controls the remote computer via the Communicator software We can for example get the status of the remote computer view and change the settings of the remote computer restart the remote computer and command the remote computer to FTP select data We can also update the software of the remote computer When we want to view the software settings of the remote computer the remote computer sends the software settings to the server computer via FTP For this reason a user name and password of the server s FTP is required We may have multiple server computers controlling remote computer In this case we simply click the add button to add the information for more server computers Real Time Communications Settings Connection index number fo OK Unique connection name Cancel IP address Port number i 0 User name Password e DATA PROCESSING The data processing GUI contains sub GUIs that are pertinent to the signal processing that is done on the raw data after it has been acquired Data Processing Create Modify Filter Settings OK FFT Settings Cancel Superposed Epoch CREATE MODIFY FILTER SETTINGS After data is acquired we would like it to be filtered This is done through the filter GUI To add a filter simply click on the Add button then click on the Filter from File A dialogue in which the user can select a filter file will be brought up The
14. isabled on the remote computer 2 In C HAILSoftware hftp cfg of the remote computer edit the variables in hftp cfg file to the ftp settings on the server computer In general the variables should already be assigned correctly 3 In C HAILSoftware Listener ini of the remote computer edit the IP address and the port number to the IP address of the server computer and the port number that the Communicator exe software is listening to Again this probably does not to be changed 4 In the server computer make sure that the computer contains the correct DownloadNewSoftwareNext bat file The correct batch file can be found in the software package under the manuals_and_examples directory The remote computer must download this batch file when step 7 is executed For the first install of this software the remote computer will look somewhere in c HAILSoftware for the DownloadNewSoftwareNext bat file For example if the remote computer is in Taylor the Taylor computer will look in C HAILSoftwareDownloads Taylor HAILSoftware of the remote computer for the batch file Thus it is imperative that this batch file is placed in this directory We should make sure that DownloadNewSoftwareNext bat contains the correct commands The first line mkdir c WLF_DAQ creates the directory on the remote computer in which the software will be installed to The next set of lines download the necessary files into the install directory For ex
15. les and create the necessary directories for the program to run correctly 5 Run Demodulator exe on the remote computer 6 Run Communicator exe on the server computer A connection should be established between the 2 computers on the Communicator software 7 On the server computer make sure the connected remote computer is checked and then select Download New Software from the pull down menu and then click administrator send 8 The remote computer will download DownloadNewSoftwareNext bat file from somewhere in the c HAILSoftware directory After the file has been downloaded DownloadNewSoftwareNext bat file will be executed on the remote computer The new software will then be installed on the remote computer under c WLF_DAQ LOCAL INSTALL PROCEEDURE HAIL Software NOT required In the case that HAILSoftware is not installed on the remote computer or the internet is not accessible in the remote computer we must install the software locally using a CD with the software on it 1 Make sure Spysweeper is disabled on the remote computer 2 Make a directory preferably c VLF_DAQ where the software should be installed into This directory should not have any spaces 3 Copy the entire contents of the CD into the install directory 4 Run VLF_DAQ exe The startup folder will be updated the first time the software is run Overview of the Software MAIN GUI The main GUI consists of various status indicator and b
16. licking on the add button and then using next and prev to navigate ADC Card can simply be the model name of the ADC card Again the fields in this GUI do not directly affect the data acquisition They are for informative purposes only The only exception is the pull down menu in which the user may select the type of GPS sytem Motorola or TrueTime that the system is hooked upto Hardware Information C ADC Card Il a Settings Cancel Computer SN GPS SN Motorola Line Receiver SN Preamp SN sd Preamp Cards SN a 3 jo A neH Add Del Description Antenna Settinas Serial Settings ANTENNA SETTINGS The user can enter various information about the antenna setup by clicking on the Antenna Settings button The fields in this GUI do not directly affect the data acquisition It should be used as reference when studying data acquired Antenna Properties Number of antennas 2 Antenna impedance sd Cancel Wire gauge ae Wire length 1 turn oOo Number of tums f Latitude Ss Area of 1 tum Longitude Antenna height wl Altitude i Ant base length inochi asia Antenna bearings Antenna shape Antenna description SERIAL SETTINGS Serial Port Settings COM port Baud rate a00 Cancel Byte size isi Buffer size 2048 Parity NONE ha Stop bits These are settings that the GPS system uses to communicate to the computer thr
17. ough the serial port Motorola GPS system should use the following settings Baud rate 9600 Byte size 8 Buffer size 2048 Parity None Stop bits 1 Truetime GPS system should use the following settings Baud rate 9600 Byte size 7 Buffer size 2048 Parity even Stop bits 1 ADC SETTINGS Most important in the hardware information GUI is the ADC sub GUI For each ADC card installed in the computer the user should enter information of the card The Device number assigned to the ADC card can be found on the NIDAQ configuration utility ADC Information A D card number jo Unique card name aD C1 Cancel gt Device number ft Card SN Card type Previous Next Add Delete COMMUNICATIONS SETTINGS The information in this GUI is important for any features in the software that make use of the Internet It is important that the Have Internet Access box is checked if internet is available and not checked if it is not available If this box is not checked any features requiring internet connectivity will be disabled OK Network Satins IV Have Internet Access FTP SETTINGS We would like to FTP data particularly narrowband data to a remote site after it is acquired and processed To do this the user must add a FTP setting in this GUI We will call the computer that we would like to FTP data to the FTP computer For each FTP computer the user must enter the FTP computer
18. roadband continuous broadband and narrowband are being run simultaneously Because different users may want to use the software for different applications the software was built with scalability in mind For example user defined scripts can be run after acquisition of data DAQ GPS Receiver Line Receiver North South Receiver East West Receiver Installing the Software SYSTEM REQUIREMENTS 1 Intel Pentium 4 processor PC 2 Microsoft Windows XP 3 512 MB Ram 4 10 GB Hard Drive for broadband acquisitions RECCOMENDATIONS The software is a very CPU intensive program during data acquisitions so it is recommended that all other CPU heavy programs be turned off while data is being acquired REMOTE INSTALL PROCEEDURE HAIL Software required The existing HAIL Software Demodulator exe has the ability to send software updates through the internet via the Communicator program We will use the existing Demodulator exe software located in C HAILSoftware to remotely install the VLF DAQ software Instead of updating HAILSoftware we will use a custom made DownloadNewSoftwareNext bat to install the new VLF_DAQ software We will call the computer we would like the software installed on the remote computer We will call the computer that we are installing from usually located at Stanford the server computer In general server computer will be the hail stanford edu computer in 201 1 Make sure Spysweeper is d
19. s IP address i e vlf europe stanford edu port number user name password FTP times and directory you would like the data to be FTPed to For each FTP setting the user should give a name to this setting The user must also enter the time of the day that they would like the FTP to begin and end If all the files are FTPed before the end time the FTP thread will simply close before the end time If the files are not FTPed within the allotted time frame the FTP will close and finish up the following day during the next FTP time We currently support only one FTP setting Eesen t FTP Setting Number jo FTP Name o 1 Cancel Host IP Addess Username Host Port Number fi Password t Host Data Cirectory u D FIP file upon file completion I Convert to mat 2 FT FTP file starting at 0 0 0 F Delete bin file upon successul FTP end at 0 0 0 f Delete directories after 20 days Previous New Delete NETWORK SETTINGS We can control the software over the internet without physical being at the actual computer We will call the computer we would like to control the remote computer and the computer we would like the control the remote computer from the server computer In order to have access to the remote computer we must specify settings on the controlling computer In particular we need the IP address and port number of the server computer The remote computer will then establish a connection wit
20. ssing F Send full bandwidth raw Eem F Perform FET using ee Previou j Previous Use this channel s ming forall channels 21 Click OK for Broadband Settings GUI 22 Click on the Narrowband Settings button m Select Narrowband Channel Narrowband Channel Number 0 Previous Next Add Delete Channel Name Call Sign NLK Center Frequency jas Calibration Factor 5s IV Save Datato Disk V FTP Data IV IsMSK Modulated I Do Low Res T Spheric Channel V Synoptic Cleanup G Heal lime Processing FET Setting Number zj P Send Full Bandwidth Raw Cancel Superposed Epoch Setting Number m Data Rate and Filtering Primary Filter Number Ne 200 v Secondary Filter 7 Sample Frequency 50 Hz FTP FTP Setting ty Selec A D Card A D Card Number AD C1 7 A D Channel Number a m Set Acquisition Timing Narrowband Timing Number q Previous Next Add Delete F Use this channel s timing for all channels Continuous HH MM 55 Start foo foo foo Period foo fos foo End j3 foo fo Duration 1 0 fo C Synoptic HH MM SS a Click on Add in the Select Narrowband Channel section b Click save data to hard drive c Click FTP data d Click Is MSK Modulated e Click Synoptic Cleanup f Enter NLK under Channel Name g Enter 24800 for Center Frequency h Enter 5 for
21. te For each channel the user can specify a filter setting to be used from the filter settings created in the filter GUI For each channel the user must specify the timing schedule for this channel To add a timing schedule simply click on add and enter the times Start time The time that acquisition should start End time The time that acquisition should end Period For synoptic acquisitions the period of acquisition For continuous acquisitions the length of data contained in each file Duration For synoptic acquisitions the duration of each period For continuous acquisitions the length of data contained in each file Note for continuous acquisitions the period and duration should be the same For example start time of 3 00 end time of 10 00 period of 1 hour duration of 5 minutes will acquire data for the first 5 minutes of each hour from 3 00 to 10 00 Broadband Acquisition Settings r Select Broadbend Channel 5 p eal Time Processing F Send full bandwidth raw Ok Broadband crannel number 0 F Petorm FFT using Cancel Preyiou Next Add Delete ETP I Save datato hard dive FTP data FTP Setting lt I Synoptic Cleanup m Data Rate and Filtering r Select A D Card Sample frequercy fioo kHz x A D zard faoct hd Primary filter 5000 z A D channel number fi ba r Set Acquisition Timing Continuous C Synoptic Broadband timing number fu HH MM SS HH MM SS
22. ust specify the timing schedule for this channel To add a timing schedule simply click on add and enter the times Start time The time that acquisition should start End time The time that acquisition should end Period For synoptic acquisitions the period of acquisition For continuous acquisitions the length of data contained in each file Duration For synoptic acquisitions the duration of each period For continuous acquisitions the length of data contained in each file For example start time of 3 00 end time of 10 00 period of 1 hour duration of 5 minutes will acquire data for the first 5 minutes of each hour from 3 00 to 10 00 Note The FTP pull down menu has been disabled since we do not allow multiple FTP settings un the current version Narrowband Acquisition Settings Real Time Processing OK Select Nerowband Channel F Send kull Bandwidth Haw Cancel Narrowband Channel Number 0 ancel Superposed FET Settini PAOI Next Add Delete FeR E Epoch Setting N umber Channel Name Call Sign NLK Ey Center Frequency 40000 Calibration Factor j SaveDatato Disk FTP Data I Is MSK Muuulated T Do Low Mes See FIP Setting I Spheic Channel Synoptic Cleanup FTP Data Rate and Filtering Select A D Card Primary Fiter Number 4D Cad Nonber NONE S Secondary Filter z 1 Y Sample FEENEY None s 4 D Channel Number Set Acquisition Timing icy
23. uttons which open up sub GUIS i Stanford University YLF DAQ E Station Nane Installation Date Password kaf Stanford Februay 21 2005 f Latitude Longitude Software Version Ai j 20050214 f GPS Date GPS Time GPS Quality g 02 22 0 03 53 16 4 Next Acquisition Start Time End Time fo fofo o fofo i FL I Status Error Messages E I Continuing without GPS Quality Lock f i Jis Data Processing p Hardware Information CD 0YD writina Broadband Settings Communicatior Settings About VLF DAQ Narmwband Settings Exit Restore Settings Station Name is the name of the station that the software is installed on Installation Date should be the date that the hardware was installed on the computer Latitude Longitude Software Version GPS Date GPS Time GPS Quality will be filled in by the software If a Motorola GPS system is hooked up quality is simply the number of satellites the antenna sees We require at least 3 satellites for a lock to be enabled in the Motorola system In the truetime GPS is hooked up quality says LOCKED when a GPS lock is acquired STATUS INDICATORS Upon start the software looks for GPS lock During this time no acquisitions may occur If a GPS lock cannot be found within a certain time the software will start its acquisition schedule without GPS lock At the top of the GUI there are several fields that display the status of the softwar
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