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ENVI CsScintrex ENVI Cs Cesium Magnetometer

OPERATION MANUAL SCINTREX

ENVI Cs Manual - part # 790700 Revision 2

ENVI CsManual - part # 790700 Revision 2

Rev Description of change ECO Date of issue App

1 Initial Release 5820 May 18, 2012 RL

2 Remove Product Structure 5837 June 8, 2012 RL

ENVI CsScintrex ENVI Cs Cesium Magnetometer

Operation Manual


SCINTREX LIMITED

World-wide web: http://www.scintrexltd.com

Copyright © SCINTREX Limited 2012. All rights reserved.No part of this publication may be reproduced, stored in a retrieval system or transmitted, in any form, or by any means, electronic, mechanical, photo-copying, recording, or otherwise, without prior consent from SCINTREX Limited.

Document Part No. 790700 Revision 2Printed and bound in Canada

HEAD OFFICESCINTREX Limited222 Snidercroft Road, Unit #1Concord, OntarioCanada, L4K 2K1tel: (905) 669-2280fax: (905) 669-6403e-mail: [email protected]


Table of Contents

2nd

2

2nd Draft

Getting StartedUnderstanding Instrument Basics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Unpacking the Instrument . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Assembling your ENVI Cs. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Assembling your ENVI Cs - Hands Free Total Field Configuration. . . . . . . . . . .Assembling your ENVI Cs - Horizontal Pole Total Field Configuration . . . . . . . .Assembling your ENVI Cs in gradient configuration . . . . . . . . . . . . . . . . . . . . . .

Operating the ENVI Cs for the first time . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Powering up the ENVI Cs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .ENVI Cs Batteries . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Charging the batteries. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Overview of the Console and Keypad. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Turning the ENVI Cs Console On . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Activating the MAG application . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Turning the ENVI Cs Console Off . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Turning the ENVI Cs Sensor On . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Setting Up Your InstrumentWorking with the Display and Menus . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Info screen . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Operating the ENVI Cs in the FieldInitializing your magnetometer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Using GPS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Using the GPS receiver. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Initializing your GPS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Taking a measurement. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Taking a Measurement - Numeric Screen without GPS navigation . . . . . . . . . .Taking a Measurement - Numeric Screen with GPS navigation . . . . . . . . . . . . .Taking a Measurement - Measure(Graphic) Screen. . . . . . . . . . . . . . . . . . . . . .

Saving your data. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Transferring your data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Trouble-shooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Appendix A: Scintrex ENVI Cs UtilitiesMap Registration Program. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Registering your map . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Entering waypoints . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Mag Setup Utilities Program . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

. . . 1-1 . . 1-1 . . 1-6 . . 1-8 . 1-15 . 1-20 . 1-24 . 1-25 . 1-25 . 1-26 . 1-28 . 1-29 . 1-30 . 1-31 . 1-32

. . 2-2 . 2-10

. . 3-2 . . 3-3 . . 3-4 . . 3-5 . . 3-8 . . 3-9 . 3-10 . 3-18 . 3-19 . 3-20 . 3-21

. . A-1. . . A-2 . . A-5. . . A-8

vENVI Cs Manual - part # 790700 Revision 2

Table of Contents

2nd

2

2nd Draft

Installing a new version of the Cesium Mag application . . . . . . . . . . . . . . . . . . .

Appendix B: TheorySystem Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Theory of optical pumping. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Operating hemispheres. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Appendix C: ENVI Cs Accessories ListENVI Cs Parts List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ENVI Cs Gradiometer Parts List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

. . A-9

. . . B-1

. . . B-2

. . . B-3

. . . C-5 . . C-7

viENVI Cs Manual - part # 790700 Revision 2

Startup

1 Getting Started

Understanding Instrument BasicsThis chapter gives an overview of the basic components, interfaces and procedures that you should become familiar with prior to taking magnetic measurements with your ENVI Cs.

Unpacking the InstrumentThe ENVI Cs is packed in a padded case (with the battery disconnected to comply with transport safety regulations) in order to protect the instrument during shipment.

1-1ENVI Cs Manual - part # 790700 Revision 2

Getting Started

Figure 1-1 - ENVI Cs in Shipping Case

Important:

During shipment, the battery must be disconnected. When you receive your ENVI Cs, the console battery is fully charged and connected.

Removing the Instrument from its Case

a. Pull up the tab of the link lock.b. Repeat step a. for the other link locks.c. Open the ENVI Cs transportation case by

lifting the cover.d. Remove the ENVI Cs from its transportation

case and visually inspect for any damage that may have occurred during transportation.


1-2

Understanding Instrument Basics

Startup

Important:

If there is any evidence of physical damage to the product or if parts are missing, immediately contact Scintrex Limited. All claims for shipping related damage are to be directed to the insurance carrier.Damage due to shipping or missing items should be reported to Scintrex within 30 days of receiving the product.


Getting Started

Checking that all the parts are present

Before you assemble the ENVI Cs for the first time, please verify that you have all the parts you will need:

Fig. 1-2 Fig. 1-3

Fig. 1-4 Fig. 1-5

ENVI Cs Backpack Qty 1 Figure 1-2Staff Segment Assembly Qty 1 Figure 1-3

and GPS Antenna Mounting Pole (14") Qty 1Sensor Cable Assembly 790550 Qty 1 Figure 1-4GPS Antenna 790542 Qty 1 Figure 1-5


1-4


Startup

Fig. 1-6 Fig. 1-7

Fig. 1-8

ENVI Cs DAP Console and accessoriesQty 1 Figure 1-6Joiners and accessories 790013 Qty 1 Figure 1-7ENVI Cs Electronics 790015 Qty 1 Figure 1-8For a complete list of ENVI Cs parts please refer to “ENVI Cs Parts List” on page C-5 and “ENVI Cs Gradiometer Parts List” on page C-7.


Getting Started

Assembling your ENVI CsThere are several configurations for the ENVI Cs. The following captions illustrates the hands-free standard (or vertical pole) total field configuration and the horizontal pole (or sweep mode) total field configuration.

Fig. 1-9 ENVI Cs Vertical Pole Total Field Configurations


1-6


Startup

Fig. 1-10 ENVI Cs Horizontal Pole Total Field Configuration


Getting Started

Assembling your ENVI Cs - Hands Free Total Field Configuration

1. Insert a long staff section and a short staff section on the backpack, as illustrated below.

Fig. 1-11 Long and short staff sections

2. Mount the sensor head to the end of the staff, as illustrated in the steps below...

..


1-8


Startup


Getting Started


1-10


Startup

Fig. 1-12 Sensor head mounting stepsAn alternate sensor mounting method is illustrated below.

Fig. 1-13 Sensor Clamp Head

Note:

The cross-clamp sensor mounting method as illustrated in figure 1-11 is better as it allows more degrees of freedom for the rotation of the sensor head.


Getting Started

3. Attach the GPS antenna to the back-pack, as illustrated below.

Fig. 1-14 Assembling the GPS antenna

4. Connect the sensor electronics to the Back-Pack coaxial connector, as illustrated below:

Fig. 1-15 Connecting sensor electronics to back-pack


1-12


Startup

5. Connect the sensor head to sensor electronics, as illustrated below:

Fig. 1-16 Connecting sensor electronics to sensor head

Note:

The sensor cable can be attached to the back-pack frame with the supplied velcro straps.

6. Connect the cable between the sensor and the ENVI Cs Console. Connect the cable to the Serial port on the console and to the COM1 port on the backpack.

Fig. 1-17 Close-up of the back-pack connectors


Getting Started

7. Connect the GPS antenna to the USB connector on the console.

8. Attach the console to the appropriate straps located on the back-pack.

Figure 1-18- Close-up of Console attached to Back-packThe final assembled system should resemble the following:

Figure 1-19 - The ENVI Cs system - Hands-Free Configuration


1-14


Startup

Assembling your ENVI Cs - Horizontal Pole Total Field Configuration

The steps to assemble your ENVI Cs in the horizontal pole total field configuration are identical to the hands-free total field configuration with the exception that your sensor head will no longer be mounted on the back-pack but at the end of the sensor staff. The ENVI Cs comes with six sections: four long sections and two short sections. The sensor staff consists of two long sections and one short section. A short section is used for the GPS antenna, as per the hands-free configuration.The following supplemental steps are to be followed for the horizontal pole total field configuration:

1. Assemble the sensor staff by connecting the staff sections.

2. Attach the short rotating pole bracket (the rotating pole has a hole in it and two parts that can rotate free from each other) to the Back-Pack by using a 7/16” or 11mm wrench, by first loosening the nuts as illustrated below:

Fig. 1-20 Assembling the rotating pole bracket


Getting Started

3. Insert the rotating pole in the bracket and attach the short rotating pole bracket to the Back-Pack bracket by using a the linch pin, as illustrated below:

Fig. 1-21 Inserting the rotating pole

4. Insert a cross clamp in the rotating pole, as illustrated below:

Fig. 1-22 Cross-clamp inserted in rotating pole


1-16


Startup

5. Slide the Carry Strap Mounting Clamp onto the front end of a long staff.

Fig. 1-23 Carry Strap Mounting Clamp

6. Attach the sensor cable using the white clamps that have been provided.

Fig. 1-24 Sensor cable clamped to the staff

Note:

The sensor cable can be coiled around the battery mounting bracket and then attached to the back-pack frame with the supplied velcro straps.


Getting Started

7. Attach the shoulder strap to Carry Strap Mounting Clamp assembled in Step 2

Figure 1-25 Close-up of Carry Strap Mounting Clamps

8. Attach the carry strap to the back-pack straps as illustrated below:.

Figure 1-26 Close-up of carry strap attached to Back-pack

9. Insert the back end of the sensor staff in the cross clamp attached to short rotating pole attached to the Back-Pack.


1-18


Startup

The final assembled system should resemble the following:

Figure 1-27 The ENVI Cs system -Standard Configuration


Getting Started

Assembling your ENVI Cs in gradient configurationThe steps to assemble the gradient configuration are identical to those described in the section entitled “Assembling your ENVI Cs - Horizontal Pole Total Field Configuration” on page 1-15. Furthermore, the sensor head and sensor electronics must also be assembled and connected as per “Assembling your ENVI Cs - Hands Free Total Field Configuration” on page 1-8.

1. First you must change the bracket on the lower part of the back-pack to the bracket type illustrated below:

Fig. 1-28 Assembling the horizontal gradient bracketYou will assemble two identical systems and join them with the staff joiners as illustrated in the steps below:

Figure 1-29 - Steps to assemble the horizontal gradient configuration


1-20


Startup

Note:

The gradient pole system is attached to the back-pack by snapping it into place on the horizontal gradient bracket.

Note:

You can configure the gradient as either a horizontal or vertical gradient. For the vertical gradient configuration, please ensure that the staff section with a nib is used for the front center cross staff, and that a cross clamp with a groove is used to fasten the vertical pole holding the two sensors, as illustrated below:

Figure 1-30 - Cross Staff with Nib


Getting Started

Important:

Do not forget to set the number of sensors to 2. Furthermore, the sensors electronics and sensor head serial numbers must match.

Your complete gradiometer system should resemble one of the following captions:

Figure 1-31 - 0.5 m Horizontal Gradient Configuration


1-22


Startup

Figure 1-32 - 0.5 m Vertical Gradient Configuration


Getting Started

Operating the ENVI Cs for the first time

When starting up the ENVI Cs for the first time, or after it has been turned off for an extended period of time, you should observe the following:

1. Powering up the ENVI Cs -On initial power up of the ENVI Cs, the cesium sensor will require a warm up period during which time the sensor will draw more power from the power supply, in order to reach its operating temperature. Please see “Powering up the ENVI Cs” on page 1-25 for the necessary steps.

Note:

The warm-up time of the cesium lamp heater is 15 minutes @ 20°C. It will be longer in colder weather.

2. Familiarization period -If this is your first use of the instrument, this is a good time to become familiar with the keypad and software. We suggest that you examine each menu carefully.

3. Setting up the instrument for field operations - After completing the previous steps, you are ready to set up your ENVI Cs for field use.


1-24


Startup

Powering up the ENVI CsThe ENVI Cs is powered by the 24V external battery back-pack.The instrument is also supplied with a free standing battery charger which allows the battery back-pack to be charged off-line.

Figure 1-33 - Location of External Battery Pack Connectors

ENVI Cs BatteriesThe ENVI Cs uses four rechargeable sealed Lead-Acid Batteries located in battery bags that are attached to the back-pack.

Figure 1-34 - Location of the batteries


Getting Started

These batteries have the following specifications:• Operating temperature range: -20°C to 50°C• Storage temperature range: -20°C to 60°C. For long periods it is

recommended to store below 25°C• Charging temperature: 0°C to 45°C• Nominal voltage: 24V• Nominal Capacity 5.0AhWith four fully charged batteries the ENVI Cs will operate for approximately 7 to 8 hours @ 25°C without the need for recharging. As the operating temperature drops, the battery capacity is reduced.

Warning:

In order to prevent battery damage, do not completely discharge batteries when doing field work or storing the instrument.

Charging the batteries1. Disconnect the batteries.

Connect both batteries to the charger and connect the charger to an AC supply, as illustrated below.

Figure 1-35 - Charging batteries


1-26


Startup

Important:

Important: An amber light will appear on the charger when the batteries are connected to the charger. To properly charge the batteries, charge them for at least 8 hours even after the charger shows a green light.


Getting Started

Overview of the Console and KeypadThe following picture shows the front panel of the instrument. It comprises a display for viewing menus and results; keypad for entering parameters and recording data; an active tab for scrolling between menus, USB dataport for a memory stick and GPS receiver, and a serial RS232 interface to connect the magnetic sensor and electronics.

Figure 1-36 - Close Up of the ENVI Cs Console and Keypad


1-28


Startup

Turning the ENVI Cs Console On

TTo power the console, press the power key on the front panel of the console for three seconds. The following screen will then appear:

To turn the mag power on, press and hold for 5 seconds the Red ON/OFF button located on the back-pack. This same power button will also charge the main console power. Look for the green/red light to turn on the console.

Figure 1-37 - Location of the ON/OFF Power button


Getting Started

Activating the MAG applicationThe activation of the MAG application is done in two steps:

F3 Step 1: On the ENVI Cs console, press Shift F3 twice. The screen will then turn white.Step 2: Click on the launch bar (located on the bottom right hand part of the console, underneath the ENTER key), and press the HotKey2Event application, the white screen will then disappear.

F1

Step 3: Press Shift F1 only once and the first time only to activate the MAG application. The following screen will then appear.

To exit the MAG application, press the EXIT button on the screen by either using your pen stylus or your finger. The MAG application will request a confirmation.


1-30


Startup

Note:

Follow Step #2 to activate the MAG application again. Step #1 should only be done after a console reset.

Note:

Do not press Shift F1 several times as this will activate a new MAG application every time. Check for additonal MAG applications on the launch bar.

Turning the ENVI Cs Console Off

To turn off the power the on console, press the blue button and then the power button on the ENVI Cs console.

Important:

The charger must be disconnected from the ENVI Cs console before you can turn it off.


Getting Started

Turning the ENVI Cs Sensor OnTo turn the power on the cesium sensor press the blue SENSOR ON/OFF key for 3-4 seconds. The sensor light on the sensor electronics will turn on indicating the sensor is on.

Figure 1-38 - Location of the Sensor ON/OFF button

Note:

The warm-up time of the cesium lamp heater is approximately 15 minutes at an ambient air temperature of 20°C. It will be longer in colder weather.


1-32

Setup

2 Setting Up Your Instrument

As indicated in the previous chapter, before you can initiate a magnetometer survey, you must be aware of the parameters that can be adjusted in your ENVI Cs. They include:• Survey grid parameters• Field and instrument parameters• Read, cycling and base station options• GPS setup.This chapter describes changes that you make to your system using the Setup screen.


Setting Up Your Instrument

Working with the Display and MenusThe ENVI Cs display is a LCD touchscreen and colour display with adjustable LED backlighting. Typically, each screen has a screen title, data entry or setup area, selectable options and navigation options.

F1 The F1:TAB key allows you to navigate between the screens.

Note:

Use your stylus pen or finger to go to specific entry fields in each screen, or to navigate between the screens. You can also use the key to navigate between fields on any given menu.

The MAIN Screen

Note:

The top of the screen bar will indicate the programmable key functions F1 to F6 that are available for each page.


2-2

Setup

To increase or decrease the contrast, press and holdthe blue button and the + (to increase) and - key (to decrease) the contrast.

Important:

To perform a reset, press and hold the space bar, folder key and the enter key for at least 15 seconds. This should only be done if the system fails.

Note:

The F2:ResetMAG button is temporarily unavailable.

F4The F4: Backup key is used to archive your data from the ENVI Cs’s RAM memory to its Compact Flash memory, or if the USB stick is in place, to transfer data from the Compact Flash memory to the USB stick.

F6 The F6:Measure key is used to initiate or stop a measurement of the magnetic field in different modes of operation.

The Setup Screen



Note:

Use the right-hand scroll bar to view the bottom part of the screen.

Survey OptionsUsing your stylus pen, bring the cursor within survey name field and click in the field.You can also use the key to navigate between fields on any given menu. Use the console keyboard to enter the values in any given field.

Repeat the process for the Operator Name.

Station Designation OptionsThe Station Designation Options are used when in presence of a grid with cut lines, e.g. when GPS navigation is not required.


2-4

Setup

Note:

The station designation option is disabled if the GPS field is enabled.

Line/X The line number is either denoted as +/- or NSEW. You can increase or decrease your line number using the + or - keys.

Station/Y The station number is either denoted as +/- or NSEW. You can increase or decrease your station number using the + or - keys.

Station Increment The Station Increment allows you to automatically increment the station value without having to introduce your new station value after every reading. For this function to be enabled, you must click on the Auto box.

Note:

The station increment will be automatically applied to your first station. As an example, with a start station of 0 and a station increment of 25, you will have to reset your starting station to -25 if you want to start from station 0.

Line Increment Along with the station incrementation function, you can also introduce a line increment. To increment the line, you must use the + or - to change the line number. The value will be changed according to the line increment value entered.



Parameter OptionsThe Parameter Options enable the user to configure the magnetometer survey. This is the most important sub-screen of the ENVI Cs and particular care must be taken to fully understand each parameter.

Mode of OperationThe mode of operation can be either Search/Base or Stop and Go. The Search/Base mode is an auto-repeat mode insofar that the ENVI Cs takes measurements continuously. The Stop and Go mode, as its name implies allows the user to stop at discreet stations to take measurements.

Note:

The mapping function can be used in Search or Stop and Go modes. It is pointless in the Base Station mode as your ENVI Cs would then be stationary.

To select the mode of operation, use your stylus pen to the pull-down arrow located on the right-hand side of the field. By clicking on the arrow, the selections will appear. Click the desired setting. Use the console keyboard to enter the values in any given field.

Rate (#/sec)The ENVI Cs retains its accuracy of 0.01 nT even at a sampling Rate of 10 samples per second. Therefore, unless you specifically want to sample at a lower rate, we recommend you leave this parameter as is at 10. You can change it in much the same manner as the Mode of Operation.

Note:

The default rate of sampling is 10 times per second.


2-6

Setup

Field (nTesla)The Field Value is used as a filter value in the bandwidth calculation. Normally this would be the average magnetic field value in your area.

Base Field (nTesla)The Base Field value is used as a datum that will be subtracted from the base station values. If used in conjunction with the field value, they should be set to the same value.

BandWidth (Hz) The Bandwidth is related to the filter applied to the larmor precession signal.

Sensor Sep (m)The Sensor Separation is the distance between your sensors when your ENVI Cs is configured as a gradiometer.

# of SensorsThe ENVI Cs can accommodate up to 4 simultaneous sensors. Only 2 sensors can be accommodated at the present time.

Note:

In the gradient mode, the number of sensors will be set to 2. In the total field mode, the number of sensors must be 1.

To use the GPS receiver, you must enable the GPS by clicking on the GPS box.

Note:

When the GPS is enabled, you will notice that the station designation field is disabled.



Should you wish to use a background map to enhance your navigation, you can create a base map and plot your waypoints which will most likely be the Start and End points of your survey line. For this , you need to register your map. Please refer to the next section for more details.

After you have begun to acquire data, Scintrex recommends that you back up your data to the Compact Flash memory of the ENVI Cs. The simplest way is to enable the Auto Data Backup. Data will automatically backed up after every measure/stop key action.

F5Press the F5: SaveSF key to save your settings. In this manner, you will not have to repeat your setup the next time you power up your ENVI Cs console or if you suffer a battery power loss on the ENVI Cs console. If you do not save your settings, then the deafult settings wil take place upon the next power up.

Opening a data fileOnce you have pressed the F3 key ,the following screen will appear:


2-8

Setup

Note:

You can choose the suggested file name or any other file name.



Info screenThe Info screen provides you with ready diagnostics of your complete system, as well as the ability to recall your data.The parameters and functions that are displayed are as follows:• Flash memory capacity• RAM capacity• Operating system version• ENVI Cs software version• Short user guide• Recalling text files• Graphically recalling data

To access the Info screen:

F1Press the F1:TAB key until the following screen is displayed, or use the stylus pen to click on the TAB folder.

As previously mentioned, the User Guide is similar to a summary version of the operation manual. Each screen is explained in as much detail as space allows.


2-10

Setup

The User Guide is accessed by clicking on the User Guide button with your stylus pen.The following screen will be displayed:

The Quick User Guide for the SetUp menu is accessed by clicking on the Setup button with your stylus pen.

The following screen will be displayed:



The Quick User Guide for the GPS menu is accessed by clicking on the GPS button with your stylus pen.The following screen will be displayed:

Retrieving Data

The Quick User Guide for the Retreiving Data menu is accessed by clicking on the Retreiving Data button with your stylus pen.The following screen will be displayed:


2-12

Setup

The Quick User Guide for the Measure Numeric menu is accessed by clicking on the Measure Numeric button with your stylus pen.The following screen will be displayed:

The Quick User Guide for the Hot Keys menu is accessed by clicking on the Hot Keys button with your stylus pen.The following screen will be displayed:



The Quick User Guide for the New Operating System menu is accessed by clicking on the New Operating System button with your stylus pen.The following screen will be displayed:

The Quick User Guide for the Measure Graphic menu is accessed by clicking on the Measure Graphic button with your stylus pen.The following screen will be displayed:


2-14

Setup

The Quick User Guide for the Mouse Functions menu is accessed by clicking on the Different Mouse Functions button with your stylus pen.The following screen will be displayed:

The Quick User Guide for the Map Registry menu is accessed by clicking on the Map Registry button with your stylus pen.The following screen will be displayed:



To return to the Info screen, click on the red X symbol in the upper-right corner of your screen with your stylus pen. The following screen will appear:

The Recall Text File allows you to edit a text file using the Microsoft Word TM text editor.

To access the Recall Text File function, click on the Recall Text File button with your stylus pen. The following screen will be displayed:


2-16

Setup

The Recall Text File function allows you to edit a text file using the Microsoft Word TM text editor. Click on File by using your stylus pen and you will edit the text file as you do in Microsoft Word TM text editor.To return to the Info screen, click on the red X symbol in the upper-right corner of your screen with your stylus pen. The following screen will appear:

The Graphic Recall button allows you to recall and plot on your console screen any previously stored data profile.



To access the Graphic Recall function, click on the Graphic Recall button with your stylus pen. The following screen will be displayed:

To access a data file, click on the Open File button with your stylus pen. The following screen will be displayed:

Click on the OK button to access the file.


2-18

Setup

Note:

You can also choose what you want to plot by using the Graph pull down menu: either the H1, H2 or noise profile. Furthermore, you can vary the scale by using the Scale pull down menu.




2-20

Operations

3 Operating the ENVI Cs in the Field

By now you have familiarized yourself with the Setup of your ENVI Cs and have set the instrument parameters accordingly. This chapter reviews the basic steps required to carry out a field survey. Basic survey steps include:• Initialize your magnetometer• Initialize your GPS• Initiate the reading• Recall your data• Dump your data


Operating the ENVI Cs in the Field

Initializing your magnetometerF2

Turn the sensor ON by using the sensor ON/OFF switch. Please also refer to “Turning the ENVI Cs Sensor On” on page 1-32. In the Setup Screen, pressthe F2:InitMag button to initialize your magnetometer.

Important:

During the initialization process, the message “Initializing mag 1+2” will appear in the top right corner of the screen. This will last 2 to 3 seconds. Once your magnetometer has been initialized, the message “Done” will appear.You are now ready to carry out measurements with your magnetometer and GPS.


3-2

Using GPS

Operations

Using GPSIf you decide not to use the GPS feature, please proceed to “Taking a measurement” on page 3-8

If your are using the GPS assisted navigational facilities, you must first initialize your GPS before you can take a measurement.

Important: The GPS receiver is not recommended for high resolution surveys. Furthermore, the GPS receiver operates only in the WGS-84 Ellipsod.



Using the GPS receiverTo use the GPS, you must first connect the antenna to the USB port of the ENVI Cs console.Then mount the antenna on the GPS mounting pole or sensor pole (position at opposite end to the sensor to avoid magnetic interference) as illustrated below:

Figure 3-1 - Mounting the GPS antenna


3-4

Using GPS

Operations

Initializing your GPSTo access the GPS setup screen:

F1Press the F1: TAB key until the GPS screen is displayed.

Note:

The dX, dY and dZ parameters are the deviations in meters between the WGS84 Geoid and your local Geoid. Enter the parameters to match your local map by using the console keyboard.

Important:

Reminder: The GPS receiver operates only in the WGS-84 Ellipsoid.

F2

Using the mouse control to move the cursor, pressthe F2:InitGPS button. You will see the message “Acquiring GPS Lock” appear in upper left-hand corner of the screen.

F3

Once Lock has been acquired, click on the F3:SyncGPS button to synchronise the console’s internal clock with GPS time. The message GPS



Sync will appear in the upper left-hand corner of the screen and an hour glass will appear in the centre of the screen.

Note:

At this point, you will notice that your GPS is slowly acquiring a GPS signal and that the number of satellites is increasing. Furthermore, the real-time clock in your ENVI Cs is now synchronised with the GPS clock and you will notice that the time that is displayed is UTC (Coordinated Universal Time).

.


3-6

Using GPS

Operations

Important:

F5You must press the F5:MarkGrid button in order for the GPS coordinates to be transferred to the Survey Setup screen.

Alternatively, you can also click on the Map box and the following screen

will appear giving your location on the globe.

Now you are ready to take a magnetometer measurement.



Taking a measurementNote:

If the values that are displayed are 0 or 99999.99, your sensor orientation is wrong, i.e. you are in a sensor dead zone. Please refer to Appendix B “Theory” for an explanation of dead zones and active zones.

Two screens for data acquisition are available:

1. Measure(Numeric) screen - shows the numeric value of the magnetic field as it is being acquired. If you are using GPS and have registered your map, the map will appear on the screen.

2. Measure(Graphic) screen - allows the operator to view the magnetic field values in graphical form as it is acquired at 10 samples per second

Note:

During a measurement, you will only have access to the Measure(Numeric) and Measure(Graphic) screens.

Important:

You must open a data file prior to taking a measurement, otherwise your data will not be stored.

The crossed filing cabinet icon that may appear in the Measure (Numeric) or Measure (Graphic) screens indicates that you have not opened a file to store your data. Please refer to “Opening a data file” on page 2-8 for the proper procedures to open a data file.


3-8

Taking a measurement

Operations

Important:

You will have to power up your sensor before you can take a measurement. Please refer to “Turning the ENVI Cs Sensor On” on page 1-32 for instructions on how to power up your sensor.

Taking a Measurement - Numeric Screen without GPS navigation

If you wish to use the GPS navigation functions, skip the following section and proceed immediately to “Taking a Measurement - Numeric Screen with GPS navigation” on page 3-10.

Note:

Both the GPS and Map Navigate functions in the “Working with the Display and Menus” on page 2-2should be disabled for the present section.

F1 To access the Measure(Numeric) screen, press the F1:TAB key, until you access the following screen:



F6 To initiate a reading, press the F6:Measure key, your readings will appear on the screen.

Note:

You will notice that the magnetic field values (H1 and /or H2) will vary.

Taking a Measurement - Numeric Screen with GPS navigation

In order to take measurements with GPS navigation you must enable the GPS

and Map Navigate functions in the Setup screen, please refer to “Working

with the Display and Menus” on page 2-2 if you are unsure on how to

proceed. Furthermore, you must register your map. Please refer to “Map

Registration Program” on page A-1 for further instructions on map

registration.

F1 To access the Measure(Numeric) screen, press the F1:TAB key until you access the following screen:


3-10


Operations

Note:

As you have enabled the Map Navigate function, and have registered your map, you will notice that your map appears in the background. This example contains waypoints (in blue) which were created during the map registration process.

Entering notesYou can also enter notes that will be recorded along with your data.To enter notes, press the F2:NOTE keyF2 . The following sub screen will appear:



To choose pre-defined notes, click on the pull down arrow in the Pre/Def box, as illustrated below:

For instance, to choose “Base Line” as your pre-defined note, click on “Base Line” with your stylues pen, as illustrated below:


3-12


Operations

To record the note in your data file, click on the Record NoteRecord Note tab.

Saving your bitmapYou can also save your existing bitmap in the ENVI Cs memory for future use.To save your Bitmap, click on the Save BitmapSave BMP tab. The following sub screen will appear:



Important:

The Bitmap should be saved in the DiskOnChip/CMag/WP directory, as illustrated below. Enter the name of the file using the console keyboard.


3-14


Operations

Setting a course - Numeric Screen with GPS navigationOnce you have imported your Bitmap with the waypoints, you will want to trace your survey or course lines as you navigate on the ground.TF3 o trace your lines, press the F3:NAVSET key. The following sub-screen will appear:

Here you can choose your Off-course threshold, i.e. what tolerance you will allow off your plotted course before the ENVI Cs warns you that you are off-course. Alternatively, if you are only trying to locate your anomaly, you can enable the Navigation ONLY feature, by clicking on Nav. Only, where your data will not be recorded. You can also pick what color and symbols you want for your course. You can also enable the plotting of the magnetic



values by clicking H1 Trace. To close the Navigation setup window, click on any part of the screen with your stylus pen.Once you have completed the Navigation Setup, you are ready to navigate to your next waypoint or to any other location on your map.

F5Press the F5 Wp(ON) to turn the waypoints ON. Use the right/left button (shaped like a cross) to toggle between your waypoints. Your active waypoint will be in red, as illustrated above.Press the space bar, the following screen will appear:


3-16


Operations

Acknowledge that this is your preferred course by clicking Yes. An orange line showing your track will then appear, as per the following screen:

Note:

The beginning of your course is your current GPS position.You are now ready to navigate.

Note:

F6

Once you have initiated a reading, by pressing the F6:Measure key, you will notice an arrow in the upper left-hand corner of the screen. This is the direction you must follow to stay on your course line. Furthermore, the distance to the waypoint is illustrated in the top bar. Alternatively, if you had enabled H1 trace in the Navigation setup, you would see the magnetic data appear as a profile.



Taking a Measurement - Measure(Graphic) ScreenF1 To access the Measure(Graphic) screen, press the

F1:TAB key until the following screen appears:

F6 To initiate a reading, press the F6:Measure key, your magnetic data will appear:

Note:

H1 denotes the magnetic field of the first sensor, H2 the second sensor and H2-H1 the gradient.


3-18

Saving your data

Operations

Saving your dataAfter you have begun to acquire data, Scintrex recommends that you back up

your data to the Compact Flash memory of the ENVI Cs.

F4To back-up the data from the RAM memory of the ENVI Cs to its Compact Flash memory, press the F4:BACKUP key. You will notice a message “Backup finished”. Your data is now stored in C: drive of the ENVI Cs’s Compact Flash memory.

Note:

You can back up your data as frequently as you like. A better procedure is to enable Auto Data Backup. Please refer to paragraph “Parameter Options” on page 2-6.

Once you are done with the survey, you can transfer the data from the Compact Flash memory to the USB data stick supplied with your ENVI Cs or any other USB data stick.

Note:

The USB data stick is handled as any other portable storage media and appears as a separate drive called Hard Disk in your console’s file directory.



Transferring your dataOnce you have stored your data on the USB memory stick you will want to download the data to your PC. The ENVI Cs enables you to transfer data via a standard USB port.

Insert a USB stick in the USB port of the console.

Important:

Disconnect the MAG connector from the RS-232 port.

F4

Press the F4:Backup key to store the contents of your backup folder (compact flash), i.e. all the data files to your USB stick. The message “Transferring data” will appear in the upper left-hand corner of the screen as the files are being copied to your USB stick. Once your data has been transferred, the message “Transfer finished” will appear.


3-20

Trouble-shooting

Operations

Trouble-shootingDespite the fact that your ENVI Cs is a very reliable instrument, there can be circumstances where problems may occur. The following table lists some of these problems and their suggested solution. However, please do not hesitate to contact your nearest Scintrex office.

Problem Possible cause Possible solution

ENVI Cs will not power up. No

screen

System is booting up. Wait 25 to 30 seconds for power up.

Sensor problems: Field does not

change, Noisy field, no signal at all. A red light can be

seen on the sensor electronics

Sensor needs to warm up.

Wait at least 15 minutes for sensor electronics temperature to stabilize.Check S1 / S2 cable/plug connections.

Sensor problems: Field does not

change, Noisy field, no signal at all. A

red light cannot be seen on the sensor

electronics

Sensor is not turned on.

Press sensor power switch for 4 to 5 seconds.

Battery capacity not to specification.

Batteries have been charged

Battery are faulty or cold.

Consider low ambient temperature.Keep batteries under your coat.Replace the batteries.

Battery capacity not to specification.

Batteries have not been charged

Batteries are depleted. Charge the batteries.Charge 2 hours more once the green light on the charger comes on.

GPS problems:- No signal- Can’t synchronize

Antenna is obstructed.PPS Pulse is received.

Remove obstructions from antenna.Check that the PPS Pulse is properly received by the ENVI Cs.



Topographical maps, waypoints, map registration

problems

Improper parameters. Please make sure that you are using the proper datums, xyz offsets and ENVI Cs setup.

My data file is lost You never created a data file in the first place.You never backed up your data file.

You must open a data file prior to taking a measurement.You must backup the file to the flash card prior to powering down the unit or changing the batteries.


3-22

Utilities

A Scintrex ENVI Cs Utilities

Map Registration Program

The GPS Registration Program allows the user to create WayPoint files, create Map Info files and Map files.Before you start the GPS Map Registration program you must obtain a graphic file (preferably in *.bmp format) of the area you want to survey. This will serve as a background in the Numeric screen, see “Taking a Measurement - Numeric Screen with GPS navigation” on page 3-16.

Important:

You must know the position, either in UTM or LAT/LONG of at least three points on your graphic file in order to properly register the map. Please note that blank maps can be registered as long as you know these three positions.

You will then create waypoints which you will walk towards on the ground. These are most commonly the beginning and end points of your survey lines.Once you have created your waypoints, you will calibrate your map and save it. The Map Registration program will then create the WayPoint file, the Map Info file and the map file all of which are necessary for GPS assisted magnetometry.

A-1ENVI Cs Manual - part # 790700 Revision 2

Registering your map

Click on the MapRegister.exe icon. The following screen will appear.


A-2


Utilities

Click on Map, New Bitmap (or F2) to open your graphic map. The following screen will appear:

Important:

Maximum recommended bitmap size is less than 1mb.


You will choose the map you want to use by clickingon the file name with your cursor, as illustrated below:

As an example, refer to the following file:


A-4


Utilities

You will notice that the map has UTM Northing and Easting coordinates.

Entering waypointsClick on the Calibrate icon, you will see three points appear on your map, as illustrated below:

Use your mouse to move the waypoints to known locations.


Click on Calibrate, Set Mark Coordinates to enter the coordinates of the waypoints, as illustrated below:

Note:

You can choose either UTM or LAT/LONG coordinates for your waypoints.Once you have entered the waypoint coordinates, click on the Save icon and exit. You will notice that you have now created three types of files: *.wpt, *.txt and *.bmp. These will be used in the GPS setup in the Setup screen of your ENVI Cs.

Hint:

Transfer these files to your USB Key. You will then transfer them to the Compact Flash memory in your ENVI Cs.


A-6


Utilities

Retrieving your GPS registration filesTo retrieve your GPS Registration files from your USB memory stick, insert the USB key in the USB A data port. Using your mouse control, move the cursor to the Desktop icon and click on the icon. The following screen will appear:

DESKTOP ICON

You will now retrieve your GPS Registration files much like you would do on a PC. When you copy them to your ENVI Cs, they are automatically copied into the Compact Flash memory.


Mag Setup Utilities ProgramThe Mag Setup Utilities program allows you to set up all ENVI Cs parameters. Following the setup of all the parameters, a file called cmag.ini will be created. This file needs to be transferred to ENVI Cs and stored under the /Storage Card/cmag directory. Upon power up of ENVI Cs this file will be read and all parameters will be set accordingly.

Locate your Utilities directory in the ENVI Cs installation CD-ROM, and double-click on the Mag Utilities setup program icon, and the following screen will appear. Notice that all menus resemble the menus of ENVI Cs.


A-8

Mag Setup Utilities Program

Utilities

Installing a new version of the Cesium Mag application

The future versions of the ENVI Cs application will be provided in the self extracting file form. The file name is: CesiumMag_PPC.ARMV4.CAB

To update your previous version of ENVI Cs please follow the steps below.

Note:

To transfer the new cab file from your PC, use your USB Memory key (provided) or the Active Sync connection. (USB or Ethernet).

1 After ENVI Cs power up, the Cesium Mag application will load automatically. Terminate the application by Exiting from Main page.

2 Use Windows Explorer to navigate within NavMag.

3 Go to the Storage Card Folder

4 Go to the Startup Folder

5 Delete the CesiumMag folder

6 Copy the new version of the Cesium Mag utility “CesiumMag_PPC.ARMV4.CAB” to the same path where the Windows folder is (NOT INSIDE OF IT)

7 Double click on CesiumMag cab file.

8 When prompted where to install, point to the \Storage Card \ Startup folder.

9 After install you should have Cesium Mag folder in the Storage Card \ Startup folder.

10 If provided (in the storage card\OS_/aPP), Run SctCopy.exe application. This will copy all of the files for your OR Open this CesiumMag folder and copy all contents to \StorageCard\Startup\ADSCopy folder overwriting the previous files.

11 Reboot the system and new Application version will be running.



A-10

Theory

B Theory

System OverviewAs shown below, the ENVI Cs sensor consists of a sensor head with cable and sensor electronics.

Figure B-1 ENVI Cs Sensor Head and ElectronicsThe sensor head has an electrodeless discharge lamp (containing cesium vapor) and absorption cell. Electrical heaters bring the lamp and the cell to optimum operating temperatures with control and driving circuits located in the electronics console. Heating currents are supplied to the sensor head through the interconnecting cable.

B-1ENVI Cs Manual - part # 790700 Revision 2

When operating, an RF oscillator in the electronics console provides RF power to a lamp exciter in the sensor head and the radio frequency (RF) field produces a corresponding resonant optical radiation (light). The light radiating from the cesium lamp is collimated by a lens. The light propagates in the direction of the sensor optical axis and passes through an interference filter which selects only the cesium D1 spectral line. The light is subsequently polarized in a split, right/left hand circular polarizer before it is allowed to optically excite cesium vapor in the absorption cell.

Theory of optical pumpingThe narrow bandwidth resonant light causes momentary alignment (polarization) of the atomic magnetic moments to the direction of the ambient magnetic field. The resonant light "optically pumps" the cesium atoms to a higher energy state. (Note that the polarizing light beam has to be oriented in the general direction of the ambient field to be effective.)Large numbers of cesium atoms can be polarized by optical pumping and then induced to precess coherently in phase around the ambient field by means of a small magnetic field, H1. This small magnetic field is transverse to the ambient field and alternating at the Larmor frequency. The H1 field is produced by a coil in the ENVI Cs. The coil is coaxial with the sensor optical axis and wound around the absorption cell. Polarized resonant light perpendicular to the ambient magnetic field detects the precession. This light is alternately more or less absorbed, depending on the instantaneous orientation of the polarization.In the ENVI Cs, this probing light is the perpendicular component of the resonant light beam. If the modulation of through-the-absorption-cell transmitted light is detected with the photosensitive detector, and the resulting Larmor signal is sufficiently amplified and phase-shifted before being fed back to the H1 coil, then a closed loop self-oscillating circuit results.The resonance occurs at the Larmor frequency, which in weak fields, e.g. the Earth's magnetic field, is precisely linear with the field in which the absorption cell is located. For the cesium 133 the proportionality constant (gyromagnetic constant) is 3.498577 Hz per nT.


B-2

System Overview

Theory

As indicated, different components of the same resonant light beam perform two functions: • the component parallel to the ambient field performs the optical pumping• the perpendicular component detects the coherent precession. Therefore, no pumping is taking place if the light beam (the optical axis) is perpendicular to the ambient field (the equatorial orientation) and consequently the sensor is not operating. Equally, no light modulation is taking place if the light beam is parallel with the ambient field (the polar orientation) and consequently the sensor is not operating. The second reason for the sensor not operating in the polar orientation is that the H1 field, being parallel to the ambient field, can not induce precession of the magnetic polarization.

Operating hemispheresThe plane perpendicular to the ambient field divides the sensor operating zones into two hemispheres - northern and southern operating hemisphere. In the northern operating hemisphere the sensor light beam, which propagates in the direction of the optical axis, Figure B-2, forms an angle from 0° to 90° with the direction of the ambient field. In this hemisphere, the phase shift of the Larmor signal amplifier required for the self-oscillation at the peak of the resonance is -90°.


Figure B-2 Northern Operating HemisphereIn the southern operating hemisphere the light beam forms an angle from 90° to 180° with the ambient field direction, Figure B-3. There, the phase shift of the Larmor signal amplifier required for the self-oscillation at the peak of resonance is +90°. Thus the phase change of 180° is required to make the sensor operational when the operating hemisphere is changed.


B-4

System Overview

Theory

Figure B-3 Southern Operating Hemisphere



B-6

Accessories

C ENVI Cs Accessories List

C-1ENVI Cs Manual - part # 790700 Revision 2

The following three captions detail the components that are part of the Joiners and Accessories parts kit p/n 790013.


C-2

Accessories



C-4

ENVI Cs Parts List

Accessories

ENVI Cs Parts ListPart Number Description Qty009112 1/4” 6/32 Phillips Screw 2200252 2Gb USB Stick 1281102 #6 Lockwasher 2601230 24” TNC to TNC Cable 1790013 Horizontal/Vertical Pole Kit 1790015 ENVI Cs Magnetometer 1790017 ENVI Cs DAP Console 1790025 Spare Parts Kit; consisting of: 1

281155 .281 SS Flat Washer 2281221 Nylon Flat Washer 3283767 Quick Release Pin 2320950 Pliable Vinyl Cap 2512012 Quick Fuse 3512098 Fast Acting Mini Fuse 4540171 Velstrap Fastener 4600595 Hook and Loop Cable Tie 1600596 Hook and Loop Strap 5600600 Hook and Loop Cable Tie 1600668 Nylon Hose Clamp 4872153 2” Long Clamp Screw 3512098 Fast Acting Mini Fuse 4

790030 Backpack Assembly; consisting of: 1280061 1/4-20 3/8 Hex Bolt 4280604 1/4-20 3/4 Hex Bolt 2281155 .281 SS Flat Washer 6


Part Number Description Qty283767 Quick Release Pin 1320950 Pliable Vinyl Cap 2600596 Hook and Loop Strap 2790024 Frame Plate 1790230 Tube Support 1790237 Battery Support Strap 1790400 Back Segment 1790407 Battery Frame 1790550 Power & RS232 Cable 1790560 Battery 2872402 Modified Backpack 1872412 14” Staff Segment 1

790035 Transit Case 1790040 External Power Supply 1790542 GPS Antenna Assembly 1790561 Charger 1790700 ENVI Cs Operation Manual 1861234 QC Tool Software 1


C-6

ENVI Cs Gradiometer Parts List

Accessories

ENVI Cs Gradiometer Parts ListIn addition to all the components listed above, the ENVI Cs Gradiometer comprises the following parts:Part Number Description Qty009112 1/4” 6/32 Phillips Screw 2280153 1/4” 8/32 Phillips Screw 3281102 #6 Lockwasher 2281103 #8 Lockwasher 3600596 Hook and Loop Strap 2601229 12” TNC to TNC Cable 1790014 Grad Staff Kit 1790015 ENVI Cs Magnetometer 1790214 Z Bracket 1790560 Battery 1



C-8

Index

2nd

2

2nd Draft

AAssembling the ENVI Cs - Hands-Free Configuration 1-8 to 1-14Assembling the ENVI Cs - Standard Configuration 1-15 to 1-19Assembling the ENVI Cs in Gradient configuration 1-20 to 1-23

BBackup Key 2-3Bandwidth 2-7Base field 2-7

CCesium Mag application

installing A-9Console

overview 1-28

DData

reading 3-18saving 3-19

EENVI Cs

display 2-2familiarization period 1-24main measurement screen 2-2setting up 2-1turning on 1-29turning on sensor 1-32

FField 2-7

GGPS

initializing 3-5


Index

2nd

2

2nd Draft

navigation 3-15setting a course 3-15

GPS receiver 3-4Gradiometer

parts list C-7

IIncrement

line 2-5station 2-5

Info screen 2-10 to 2-19Initializing

GPS 3-5magnetometer 3-2

Installing Cesium Mag application A-9

KKeypad

overview 1-28Keys

backup 2-3measure/stop 2-3Save Settings 2-8TAB 2-2

LLarmour frequency B-2Line Increment 2-5Line Number 2-5

MMag Utilities Program A-8Measure/Stop Key 2-3

NNavigating 3-15


Index

2nd

2

2nd Draft

Numberline 2-5station 2-5

Number of sensors 2-7

OOperating hemisphere B-3Operating the ENVI Cs for the first time 1-24Operation

mode 2-6Optically pumped magnetometer B-2Options

parameter 2-6station designation 2-4

PParameter Options 2-6Parameters

# of sensors 2-7bandwidth 2-7base field 2-7field 2-7mode of operation 2-6sampling rate 2-6sensor sep 2-7

Parts list C-5

QQuick User Guide 2-11

GPS 2-12Hot Keys 2-13Map Registry 2-15Measure Graphic 2-14Measure Numeric 2-13Mouse Functions 2-15New Operating System 2-14


Index

2nd

2

2nd Draft

Retrieving Data 2-12setup 2-11

RRecall Text File 2-16

SSampling rate 2-6Save Settings Key 2-8Saving your data 3-19Screens

info 2-10 to 2-19Sensor separation 2-7Setting a course 3-15Spare parts list C-7Station Designation Options 2-4Station Increment 2-5Station Number 2-5

TTAB Key 2-2Taking a measurement 3-8Theory

larmour frequency B-2operating hemisphere B-3optically pumped magnetometer B-2

Trouble-shooting 3-21 to 3-22Turning the ENVI Cs On 1-29Turning the ENVI Cs Sensor On 1-32


SCINTREX

Head Office222 Snidercroft RoadUnit #1Concord, OntarioCanada, L4K 2K1tel: (905) 669-2280fax: (905) [email protected]

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