2
5.2 Setting up the PD300 and 3A-IS to display the user's chosen
wavelengths.................................................................................43
5.3 Startup Defaults...........................................................................44
5.4 Selecting Settings from the Nova Screen...............................45
5.4.1 To Set to the Laser Wavelength Being Used..........................45
5.4.2 To choose Manual or Automatic Ranging or dBm.................45
5.4.3 Operation with Filter In or Out...................................................47
5.4.4 Zoom..............................................................................................48
5.4.5 Offset .............................................................................................49
5.4.6 Tune and Powerlog.....................................................................49
5.4.7 Average and Measuring Very Low Power Measurement....50
5.5 BC20 Heads for Scanned Beams..............................................50
5.5.1 General Description....................................................................51
5.5.2 Setting up the startup defaults..................................................51
5.5.3 Measuring Scanned Beams with the BC20 ............................51
5.5.4 Spectral Response......................................................................52
5.6 Special Photodiode Heads ........................................................52
5.6.1 PD 300-BB Radiameter Head.....................................................52
5.6.2 PD300-CIE Photometer Head.....................................................53
Chapter 6 Operation with Pyroelectric and Photodiode Energy Heads
........................................................................................................54
6.1 Pyroelectric and Photodiode Energy Detector Heads..........54
6.2 Selecting Settings from the Nova Screen...............................55
6.2.1 Setting up the head to display the user's chosen
wavelengths.................................................................................55
6.2.2 Setup of Laser Pulse Length and Pulses / Sample............................56
6.3 Startup and Configuration of Defaults .....................................59
6.4 Energy, Power or Exposure Measurement.............................60
6.4.1 Energy Average Power and Frequency Measurement.........................60
6.4.2 Zoom..............................................................................................63
6.4.3 Measuring Total Energy Exposure. ..........................................63
6.4.4 Pyro Scope Adapter....................................................................64
6.5 Measuring Repeating Pulses of High Energy.........................65
6.6 Energy Log....................................................................................66
Chapter 7 Circuit Description .....................................................................67
Chapter 8 Calibration, Maintenance and Troubleshooting ...................69
8.1 Calibration of Thermopile Heads ..............................................69
8.1.1 Absorber types and Method of Calibration of Ophir Power
Meters...........................................................................................69
8.1.2 Linearity and Accuracy of Ophir Thermal Heads..............................72
8.1.3 Calibration Factor........................................................................73
8.1.4 Recalibration of Thermopil Heads Using the Nova ...........................74
8.2 Calibration of Photodiode type Heads .....................................77
8.2.1 Method of Factory Calibration ..................................................77
8.2.2 Accuracy of Calibration of PD300 and 3A-IS Heads..............78
8.2.3 Accuracy of calibration of BC20 Heads ..................................78
8.2.4 Recalibration of PD300 and 3A-IS Heads from a Known
Source of Laser Power...............................................................79
8.2.5 Recalibration of BC20 heads from a Known Source of Laser
Power ............................................................................................80
8.3 Calibration of Pyroelectric and Photodiode Energy Heads..80
8.3.1 Method of Calibration.................................................................81
8.3.2 Accuracy of Calibration .............................................................82
8.3.3 Recalibration from a Known Source of Laser Energy...........83