background image

9

Overshoot

Undershoot

Correct

Analog Output Signal

Input Optical Signal

Figure 5 — Detector Time Constant Acceleration Adjustment

Note

If you are operating the Model 1815-C with a High-Power detector and
with the signal acceleration turned off, then no adjustment to the
ACCEL ADJ is required.

Note

Acceleration can only be used with High-Power (thermopile) detec-
tors.  If acceleration is used with other detectors, erroneous readings
can result.

2.4.6  Analog Output

The Model 1815-C provides a 0 to 2 volt BNC analog output for signal monitor-
ing.  The signal reflects actual power measured by being equal to the digital
display value.  Thus, if the digital display indicates 1.560, then the analog
output voltage will be 1.560 volts.

Summary of Contents for 1815-C

Page 1: ...Model 1815 C Optical Power Meter OPERATOR MANUAL...

Page 2: ......

Page 3: ...anty This warranty does not apply to defects resulting from modification or misuse of any product or part This warranty also does not apply to fuses batteries or damage from battery leakage This warra...

Page 4: ...r EN55011 Group 1 Class A EN50082 1 IMMUNITY Electrostatic Discharge per IEC 1000 4 2 severity level 3 Radiated Emission Immunity per IEC 1000 4 3 severity level 2 Fast Burst Transients per IEC 1000 4...

Page 5: ...Using the System 5 2 4 1 Battery Installation Replacement 6 2 4 2 Power Up 6 2 4 3 Detector Connection and Setup 6 2 4 4 Setting the Detector Calibration Factor 7 2 4 4 1 Setting the Calibration Facto...

Page 6: ...2 Performance Verification 14 4 2 1 Environmental Conditions 14 4 2 2 Recommended Test Equipment 14 4 2 3 Initial Conditions 15 4 2 4 Verification Procedures 15 4 3 Troubleshooting Guide 17 Section 5...

Page 7: ...iagram 10 Figure 7 Model 1815 C Range Switch Positions 15 List of Tables Table 1 Model 1815 C Compatible Detectors 2 Table 2 Model 1815 C Controls 3 Table 3 SETUP DIP Switch Functions 5 Table 4 SETUP...

Page 8: ...able to this instrument Warning The American National Safety Institute ANSI states that a shock hazard exists when probes or sensors are exposed to voltage levels greaterthen42VDCor42VpeakAC Donotexce...

Page 9: ...pe C degrees Centigrade DC direct current F degrees Fahrenheit Hz hertz cycles per second I V current to voltage converter kHz kilohertz k kiloOhm mA milliamp mV millivolt nA nanoamp nF nanofarad nm n...

Page 10: ...5 Digit LCD Sample Rate 2 5 Hz Range Switch 6 positions one per decade of gain Operating Environment 70 RH Noncondensing 18 C 28 C 65 F 82 F Storage Environment 90 RH Noncondensing Compatible Detector...

Page 11: ...the calibration factor in the following way Display Noise Floor specified noise floor calibration factor mantissa Voltage Amplification High Power Detectors Range Switch Position 3 4 5 6 High Power Fu...

Page 12: ...floor is greater than specified see Section 3 3 2 Quantum Detector Tempera ture Effects 6 ACCEL ADJ fully clockwise worst case Detector Responsivity Limits Detector in Use Allowed Responsivities Allo...

Page 13: ...xii...

Page 14: ...FP3 FH1 818T 10 818T 30 818T 150 818T 150X 818T 300 High Power Low Power W mW W W W W W mW mW mW W W W kW 20 200 2 2 200 20 nW nW LOW POWER HIGH POWER LOW POWER W ATTN CAL ADJ CAL POWER ZERO ON 1 OFF...

Page 15: ...del 1815 C Optical Power Meter Refer to Figure 1 for where each accessoryfitswithintheModel1815 COpticalPowerMeterfamilytree For moreinformation pleaserefertotheNewportCatalog Table1 Model1815 CCompat...

Page 16: ...The front and rear panels of the Model 1815 C are shown in Figures 2 and 3 respectively ThefollowingtablegivesashortdescriptionofeachModel 1815 Ccontrol Table2 Model1815 CControls Control Description...

Page 17: ...Adj Reqd See Manual Cal Factor Exp Low Power Low Power w Attn High Power INPUT 1 0 ANALOG OUTPUT ACCEL ADJ DIP Switch Input BNC Connector Acceleration Time Constant Adjust Output BNC Connector SETUP...

Page 18: ...h Thefollowingtableidentifiesthefunc tioneachSETUPswitchpositionperforms Table3 SETUPDIPSwitchFunctions SETUPSwitch SwitchPosition Description 1 2 SelectsforLow Power semiconduc tor detector 1 0 orHig...

Page 19: ...themeter Thedigitaldisplayshouldlightindicatingthatthemeteris operating IftheBATannounciatorislit replacethebatteries SeeSection 2 4 1 2 4 3 Detector Connection and Setup Connect the detector to the I...

Page 20: ...ed ddofthefullcalibrationfactor valued ddE d Themantissaisthemostfrequentcalibrationadjustment madewhenmakingmeasurementsatvariouswavelengths Tosettheman tissa usethefollowingprocedure 1 Pressthefront...

Page 21: ...econdtimeconstant theACCELADJ potentiometerisadjustedatthefactoryforthisvalue However becausethe actualtimeconstantisnotexactly1secondforallthesmallerthermopiles it mayberequiredtooptimizetheaccelerat...

Page 22: ...no adjustment to the ACCELADJisrequired Note AccelerationcanonlybeusedwithHigh Power thermopile detec tors Ifaccelerationisusedwithotherdetectors erroneousreadings canresult 2 4 6 Analog Output The Mo...

Page 23: ...ordiskthermopiles voltagemeasurement DetectorsignalsareintroducedtotheModel1815 CbywayofaBNCinput connector A bank of DIP switches found on the back of the Model 1815 C configurestheamplifieraseithera...

Page 24: ...ion Low Powerdetectors aresignificantlyaffectedbytemperature Atlonger wavelengths thesequantumdetectorstypicallylosesensitivitywithincreasing temperature Howeverthedetectordarkcurrentincreasesexponent...

Page 25: ...Powerdiskthermopiledetectors whichisnotcomingfromthesource andturningoffroomandotherlights Note Changes in ambient light levels can occur from such factors as turning room lights on or off or by movin...

Page 26: ...easurementwas made WavelengthCalibration Any CheckthattheCalibration Factorforthemeasure mentwavelengthis properlyset LowBatteryPower Any Checkthatmeterisnot indicatinglowBAT DetectorSaturation Low Po...

Page 27: ...ion Note If the instrument does not meet specifications and it is still under warranty lessthan12monthssincedateofshipment contactyour local Newport Corporation representative or the factory to deter...

Page 28: ...gapreciselysetablecurrentsourcesuchasthe KeithleyInstrumentsModel220andapreciselysetableVoltageSourcesuchas theHewlett Packard8904A FunctionGenerator W W kW W W mW W nW nW mW W W W 2 200 20 20 200 2 m...

Page 29: ...htoposition3 thehighestgainpositioninthe voltage mode See Figure 7 3 PresstheCALbuttonandadjustCALADJuntilthedisplayindicates 1 00andthenreleasetheCALbutton 4 With a shorted input use the ZERO knob to...

Page 30: ...hissection pleaseseeSection5fordetails onreturningyourentiresystemtoNewportforservice Table10 Symptom FaultTroubleshootingGuide Symptom PossibleFault Correction Blankdisplay PowerswitchOFF TurnswitchO...

Page 31: ...anbatteries see Section2 4 1 Itscalibrationaccuracyiswarrantedforaperiodof1year After 1year theunitshouldbereturnedtoNewportCorporationforrecalibration Toobtaininformationconcerningfactoryservice cont...

Page 32: ..._________________________________________ Company ______________________________________________________________________________ Address _______________________________________________________________...

Page 33: ...20...

Page 34: ...en certified compliant with ISO 9001 by the British Standards Institution P N 19571 01 Rev F IN 03923 1 00 Printed in the USA Newport Corporation Worldwide Headquarters 1791 Deere Avenue Irvine CA 926...

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