Cs-3 Manual - Scintrex

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Operating the CS-3 in the Field2-12CS-3 <strong>Manual</strong> - part # 762701 Revision 1.0
3 OrientingYour CS-3An ideal magnetometer placed in a constant field should produce a constantfrequency. A real optically pumped magnetometer, regardless of whichelement it uses for its operation (cesium, rubidium, potassium or helium), andregardless of which principle of operation it employs (self oscillating, lockedoscillator), produces a frequency which varies because:• the unavoidable sensor noise makes the frequency jitter around the correctfrequency• the output frequency is somewhat dependent on the magnetometerorientationThe later dependency gives rise to the so-called heading error. Both, themagnetometer noise and the heading error, are low due to proper design andcareful alignment of the magnetometer. Precautions should be taken that theyare sustained low by properly orienting the magnetometer sensor inside theoperating active zone.The purpose of this section is to recommend how to achieve the properorientation without restricting established survey practices.Orientation3-1CS-3 <strong>Manual</strong> - part # 762701 Revision 1.0
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Page 5 and 6: Table of ContentsTable of Contents
Page 7 and 8: ForewordForewordThe CS-3 is an opti
Page 9 and 10: High Gradient ToleranceAbsorption c
Page 11 and 12: • the interfering EM field are no
Page 13 and 14: 1 GettingStartedStartupAbout this m
Page 15 and 16: About this manualChapter LayoutThis
Page 17 and 18: Understanding Instrument BasicsUnde
Page 19 and 20: Understanding Instrument BasicsSens
Page 21 and 22: Understanding Instrument BasicsIt p
Page 23 and 24: 2 Operating theCS-3 in theFieldBy n
Page 25 and 26: Setting Up the CS-3Mounting the CS-
Page 27 and 28: Obtaining the Larmor SignalObtainin
Page 29 and 30: Setting the Operating HemisphereSet
Page 31 and 32: Setting the Operating HemisphereEle
Page 33: Operating in the Presence of Spurio
Page 37 and 38: in the southern polar orientation t
Page 39 and 40: OrientationFigure 7a - Plot of tumb
Page 41 and 42: Using a Strapped Down CS-3 for Surv
Page 43 and 44: Sensor Inclination 90°From the gra
Page 45 and 46: Figure 10 - Plot of tumble angle ve
Page 47 and 48: Figure 12 - Plot of tumble angle ve
Page 49 and 50: Sensor Inclination 22.5°The orient
Page 51 and 52: Sensor Inclination 0°The orientati
Page 53 and 54: In the overlap regions the tumble a
Page 55 and 56: Only two orientations are useful an
Page 57 and 58: 4Maintaining YourCS-3 andTrouble-sh
Page 59 and 60: Trouble-shootingThere are largespur
Page 61 and 62: Reference5 ReferenceInformationCS-3
Page 63 and 64: Instrument Parts ListInstrument Par
Page 65 and 66: Warranty and RepairConcord, Ontario
Page 67 and 68: ATheory ofOperationTheorySystem Ove
Page 69 and 70: Therefore, no pumping is taking pla
Page 71 and 72: BCS-3 BlockDiagramTheoryAs shown on
Page 73 and 74: IndexAAbsorption cellmagnetic field
Page 75: Head Office222 Snidercroft RoadConc

Cs-3 Manual - Scintrex

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