CS-L Cesium Vapor Magnetometer Sensor OPERATION ... - Scintrex

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Table of Contents
Chapter 1 Foreword .............................................................................................1—1
Advantages of Optical Pumping.........................................................................1—2
High Sensitivity...............................................................................................1—2
Continuous Signal ..........................................................................................1—2
High Gradient Tolerance ................................................................................1—2
Low Radiated Electromagnetic Interference ..................................................1—2
Insensitivity to Motion Induced Doppler Effects..............................................1—2
Advantages of Self Oscillation ...........................................................................1—2
Fast Start-up ..................................................................................................1—3
Fast Response and Tracking .........................................................................1—3
Low Susceptibility to Electromagnetic Fields .................................................1—3
Superior Worldwide Orienting Capabilities.........................................................1—4
Chapter 2 Getting Started....................................................................................2—1
Chapter Layout...................................................................................................2—1
Understanding Instrument Basics ......................................................................2—2
Sensor Head ..................................................................................................2—2
Sensor Electronics .........................................................................................2—3
Electronic Housing .........................................................................................2—3
Hemisphere Control Switch............................................................................2—4
Chapter 3 Operating the CS-L in the Field.........................................................3—1
Setting Up the CS-L ...........................................................................................3—1
Mounting the CS-L .............................................................................................3—1
Powering Up.......................................................................................................3—2
Obtaining the Larmor Signal ..............................................................................3—3
Output Signals................................................................................................3—3
Couplers, Processors and Power Supplies....................................................3—4
Setting the Operating Hemisphere.....................................................................3—4
Manual Control...............................................................................................3—4
Electronic Control "R".....................................................................................3—4
“A” - Automatic Hemisphere Switch ...............................................................3—5
Summary............................................................................................................3—5
Operating in the Presence of Spurious Magnetic Fields ....................................3—5
Chapter 4 Orienting Your CS-L ...........................................................................4—1
Understanding the Active Zone of the CS-L.......................................................4—1
Using a Strapped Down CS-L for Surveys.........................................................4—6
Calculating the Tumble Angle ............................................................................4—7
Sensor Inclination 90° ....................................................................................4—8
Sensor Inclination 67.5° .................................................................................4—8
Sensor Inclination 47.5° ...............................................................................4—10
Sensor Inclination 22.5° ...............................................................................4—13
Sensor Inclination 0° ....................................................................................4—15
Recommended Survey Orientations ................................................................4—16
Comparison with the Locked Oscillator............................................................4—17
Chapter 5 Maintaining Your CS-L and Trouble-Shooting.................................5—1
Trouble-shooting ................................................................................................5—1
Chapter 6 Reference Information .......................................................................6—1
P/N 763701 Rev. 1