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1. EDO00050 Set Salinity ppt ES35 save this setup to non volatile memory in the ADCP CK2. first gt column is treated as a comment and is ignored by the VmDas software NOTE This file is best viewed with a fixed point font e g courier Modified Last 12August2003 Restore factory default settings in the ADCP crl set the data collection baud rate to 38400 bps no parity one stop bit 8 data bits NOTE VmDas sends baud rate change command after all other commands in this file so that it is not made permanent by a CK command cb611 Set for narrowband single ping profile mode NP fifty NN 16 meter bins NS 8 meter blanking distance NF WPO NNO50 NPO00001 NS1600 NFO0800 DISABLE single ping bottom track BP Set maximum bottom search depth to 1200 meters BX BPOO00 BX12000 output velocity correlation echo intensity percent good ND111100000 One and a half seconds between bottom and water pings TP000150 Three seconds between ensembles Since VmDas uses manual pinging TE is ignored by the ADCP You must set the time between ensemble in the VmDas Communication options TE00000150 Set to calculate speed of sound no depth sensor external synchro heading Sensor no pitch or roll being used no salinity sensor use internal transducer temperature sensor EZ1020001 Output beam data rotations are done in software EX00000 Set transducer misalignment hundredths of degrees CHECK THIS EA04500 Set transducer depth decimeters CHECK THIS
3. Default_calcofi ini then click OPEN 4 Control gt Go to start data collection A pair of text boxes display The one on the left is the dialog between VMDAS and the ADCP The one on the right is the dialog between VMDAS and the GPS and Ashtech The dialogs should scroll by then the windows disappear and there should be 2 small green squares in the lower right Green for ENS ADCP acquisition and green for NAV the navigation streams Shutdown 5 Control gt Stop to stop data collection 6 File gt Exit to quit VMDAS Ashtech Startup This section describes how to run the Ashtech Checker 1 Start ASHCHECK double click the icon on the desktop 2 Green is good The time heading value and an OK status will display on a green background if the program thinks the Ashtech is good 3 Red is bad The time and heading value display but may be incorrect and a status message RESET Ashtech appears Try rebooting the Ashtech depress the red button on the Ashtech and if good values don t appear in about 5 mins power cycle the Ashtech NOTE You do not have to exit ASHCHECK or stop VMDAS when you reboot the Ashtech Shutdown 4 Click the Exit button to quit CONTACT INFO Teri Chereskin 858 534 6368 tchereskinQucsd edu Sharon Escher 858 822 4965 sescher ucsd edu BASIC SETUP This section gives instructions on how to setup the New Horizon Ocean Surveyor 75 kHz for CalCOFI ADCP data collect
4. NEW HORIZON CALCOFI ADCP MANUAL March 2006 ADCP computer ADCP Ashtech This section gives instructions on how to power up the ADCP Ashtech and ADCP com puter 1 In the computer room in the New Horizon upper lab port side check that the com puter labeled ADCP aft rack middle is on green power light and that the Ocean Sur veyor ADCP deck unit is on aft rack bottom white toggle 1 ON The Ashtech is in the same rack above the computer It should be on green lights flashing I believe the As tron unit same shelf is its power supply 2 In the upper lab there is a monitor and keyboard that is used for all the upper lab computers via a KVM switch On the keyboard hit CNTRL twice to get the KVM menu to display on the monitor Use the arrow keys lt return gt to select the ADCP com puter 3 Set the computer time SIO CALCOFI setup person does this during the port call Prior to the cruise check the computer date and time Set the computer to GMT The computer clock will drift a bit during the cruise That is OK we will correct the clock drift in post processing VmDas Startup This section gives instructions on how to run VmDas assuming the usual files are in place The SIO CALCOFI setup person should verify the files during the port call 1 Start VmDas double click the icon on the desktop 2 File gt Collect Data 3 Options gt Load gt Choose INI file choose C CalCOFI AutoADCP
5. S port gets written to the NIR files It should have GGA and optionally VTG messages but nothing else the GPS heading port gets written to the N2R files It should also have a GGA message if one is available the attitude heading and tilts message and any quality messages that are relevant For instance a Seapath should have PSXN 20 for attitude and PSXN 22 for quality NOTES 1 until a VmDAS bug is fixed if you have a POSMV you should output BOTH PRDID and PASHR messages Then someone can use PRDID if they want but the qual ity information is still there for later PRDID has no quality indicator 2 Keep the number of extra messages to a minimum VmDAS can choke if it has too many serial messages The LOG files get really big and can stop data acquisition ADCP Setup TAB Options gt Edit Data Options gt ADCP Setup 1 Choose the text file to use under ADCP setup from file os75_nb16 txt DEEP OCEAN loaded via Default_calcofi ini lower precision mode This is the preferred mode for CalCOFI Since the cruise is in the open ocean and the sci entists on board are interested in currents as deep as possible use narrowband pings with 16 meter bins Deepest profiles might be to 800m but with lower vertical resolution 2 Set time between Ensembles We recommend loading a new ini file when you change configs the ini file loads the correct text file AND changes the time between ensembles automatically Oth
6. erwise you have to do 2 things manually in the gui load the text file and change the time between ensembles Change the gui Ensemble Time so it is consistent with your instrument s frequency 2 sec for NH OS75 This is done to maximize the number of pings that go in the water The RDI default settings are conservative i e they are designed so you won t have ruined data but you do have fewer pings per average NOTE Ensemble Time here refers specifically to the bottom of the ADCP Setup Tab and it refers to the seconds between ensemble where an ensemble is usually just one watertrack ping or might be a pair of pings one bottomtrack ping and one watertrack ping This setting DOES NOT have anything to do with the averaging of the data later It is important to remember to change the Ensemble Time to match the ping pattern The computer actually tells the instrument when to ping the ADCP doesn t figure that out for itself If it s too small you may have interference If it s too large you waste the op portunity to ping Recording TAB Options gt Edit Data Options gt Recording Data should record to the directory C ADCPDATA primary CN secondary It s probably easiest to have the data always end up in the same directory and choose a new deployment name to use this name will be part of the VMDAS file names Then af ter the cruise you can stop logging and use a file browser to move the data to a different director
7. ion We use a pair of files Default_calcofi ini and OS75_NB16 txt and the best way to confirm that the files have not been modified on the computer between cruises is to do a diff between the files on the computer and those archived on the USB drive CalCOFI ini and txt files are in the directory C CalCOFI AutoADCP We use files because the VMDAS manual is unclear on some critical points the files save out configuration between cruises Load the files the ini file knows to load the txt file The following tour of the VMDAS gui entries is meant to document how our ini file con figures VMDAS Each heading below describes the entries within a tab in the VMDAS setup screens Documenting them here provides a checklist for normal operation TOUR OF VMDAS TABS 1 Start VMDAS double click the icon 2 File gt Collect Data 3 Options gt Load gt Choose INI file choose Default_calcofi ini for the default setting 4 Options gt Edit Data Options gt see following sections Communications TAB Options gt Edit Data Options gt Communications Sets up com ports for ADCP GPS and Ashtech ADCP is on COM 1 I think GPS is on COM2 and Ashtech is on COM3 Hardware setup 1 gyro is going into the deck unit as a synchro feed 2 pcode or other reliable GPS as a serial feed 3 GPS heading device such as ADU POSMV or Seapath as a serial feed Presently the New Horizon has an ADUS the GP
8. y For CalCOFI data we choose calcofi Max size 2 5Mb We use 5Mb or they re too large to load easily You choose whether there is a dual output directory but don t write to a networked disk it tends to cause problems Transform TAB Heading Source choose ADCP compass gyro better for reliability Tilt source We choose to set the tilts manually to zero DO NOT ENABLE heading correction because we want the txt file to have precedence see p 56 in the VMDAS user manual EV set to 0 FA fixed transducer misalignment There should be only one EA command in use but it can be in one of two places If you are using a text file there is an EA command which we set to match the NH alignment EA045 In that case the EA command in the gui should be zero AND head ing correction should not be enabled VmDAS will use the value from the text file DO NOT ENABLE tilt correction None of these things should change between cruises Averaging TAB 60 seconds for STA short time averages The standard for ADCPs is 5 minutes or 300 seconds for LTA ENABLE reference layer bins 3 10 is fine Data Screening TAB not needed User Exits TAB not needed Simulated Inputs TAB not needed OS75_NB16 TXT ADCP Command File for use with VmDas software ADCP type 75 Khz Ocean Surveyor Setup name default Setup type Low resolution long range profile narrowband NOTE Any line beginning with a semicolon in the
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