v
2.4
Menu Level Functions ............................................................................ 14
2.4.1
Menu Access and Movement ..................................................... 14
2.4.2
Data Store .................................................................................... 16
2.4.3
Meter Configuration ................................................................... 17
2.4.4
Auto Cal ....................................................................................... 18
2.4.5
Attenuator ................................................................................... 19
2.4.6
User Calibration .......................................................................... 19
2.4.7
DC Sampling ................................................................................ 20
2.4.8
Trigger Output ............................................................................ 20
2.4.9
Trigger Input ............................................................................... 21
2.4.10 Bar Graph .................................................................................... 22
2.4.11 Tone ............................................................................................. 22
2.4.12 Detector Switch Position ............................................................ 22
2.4.13 Remote Setup .............................................................................. 22
2.4.14 General Information Functions .................................................. 23
2.5 Connecting AC Power .................................................................................... 23
2.6 Detector Connection and Setup .................................................................... 24
2.7 Power Up ........................................................................................................ 25
2.8 Performing Basic Measurements .................................................................. 25
2.8.1
Making DC Power Measurements .............................................. 25
2.8.2
Making Peak-to-Peak Power Measurements ............................. 25
2.8.3
Making Pulse Energy Measurements ........................................ 26
2.8.4
Making a Signal Integration Measurement ................................ 26
2.8.5
Measuring a Laser Pulse Energy with a Thermopile Detector .. 26
2.8.6
Using the Model 2835-C as an Exposure Controller ................. 27
Section 3 - Principles of Operation
3.1
Introduction ............................................................................................ 29
3.2
Analog Signal Flow .................................................................................. 29
3.3
Digitized Signal Flow ............................................................................... 30
3.4
Typical Detector Signals ......................................................................... 31
3.5
Thermopile Detector Signals ................................................................. 32
3.6
Pulse Energy Detector Signals ............................................................... 32
3.7
Peak-to-Peak (Photodiode) Detector Signals ........................................ 33
3.8
Integration of Detector Signals .............................................................. 34
3.9
Analog Output ......................................................................................... 35
3.10 Measurement Considerations ................................................................ 36
3.10.1 Detector Calibration and Accuracy ........................................... 36
3.10.2 Quantum Detector Temperature Effects .................................. 36
3.10.3 Thermopile Detector Temperature Effects .............................. 37
3.10.4 Energy Detector Temperature Effects ...................................... 37
3.10.5 Ambient and Stray Light ............................................................ 37
3.10.6 Common Measurement Errors .................................................. 38
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