THORLABS PM320E User manual

Thorlabs Instrumentation
Optical Power and Energy Meter
PM320E
Operation Manual
2016

Copyright © 2016 Thorlabs GmbH
Version:
Date:
Item No.:
2.1
10-Mar-2016
M0009-510-618

Foreword
Contents 4
1General Information 5
51.1 Safety 61.2 Ordering Codes and Accessories
2Getting Started 7
72.1 Parts List 72.2 Preparation 82.3 Operating Elements 82.3.1 Front Panel 92.3.2 Rear Panel 102.3.3 Main Displays
3Operating Instruction 12
123.1 Sensor Independent Settings and Operation 123.1.1 Navigating the Menus 123.1.2 System Settings 133.1.3 Readout Configuration 143.1.4 Range Setting 143.1.5 Relative Power Measurement 153.1.6 Setting an Attenuation Factor 153.1.7 Trigger Input 163.2 Photodiode Power Sensor Operation 163.2.1 Wavelength Correction 173.2.2 Dark Current Adjustment 173.2.3 Bandwidth Setting 183.3 Thermal Power Sensor Operation 183.3.1 Zeroing 183.3.2 Wavelength Correction 183.3.3 Readout Acceleration 193.3.4 Custom Thermal Elements 203.4 Pyroelectric Energy Sensor Operation 203.4.1 Trigger Level 203.4.2 Wavelength Correction 203.4.3 Display Features 213.4.4 Custom Pyroelectric Sensors 223.5 Power Measurement Using Photo Diodes 223.5.1 Photodiode Polarity 223.5.2 Setting the Photodiode Responsivity 223.5.3 Bias

233.6 Statistics Mode 233.7 Chart Mode (Power Sensors) 243.8 Histogram Mode (Energy Sensors) 243.9 System Configuration 243.10Analog Output 253.11Miscellaneous Analog Output
4Remote Operation 26
264.1 Connecting a Computer 264.2 PM320E Utility Software
5Command Reference 28
285.1 Common IEEE488.2 Commands 305.2 Measurement Commands 345.3 Device Setup Commands 425.4 Sensor Commands 435.5 MISC-Output Commands 475.6 Device Status Commands 495.7 General System Commands 515.8 Status Reporting 525.9 Error Reporting
6Measurement Considerations 54
546.1 Choosing the Right Sensor 546.2 Reducing Noise for High Accuracy Measurements 546.3 Power Measurement of Pulsed Signals 556.4 Line Width of Light Sources 556.5 Temperature Effects on Thermal Sensors 556.6 Ambient and Stray Light 556.7 Back Reflection 566.8 Beam Diameter vs. Active Sensor Area 566.9 Fiber Based Measurements
7Maintenance and Service 57
577.1 Line Voltage Setting 587.2 Exchange Mains Fuses 597.3 Firmware Update 607.4 Troubleshooting
8 Appendix 61
618.1 Technical Data 638.2 Pin Assignment of the Sensor Connector 648.3 Certifications and Compliances 658.4 Warranty 668.5 Copyright and Exclusion of Reliability

678.6 Thorlabs 'End of Life' Policy 688.7 Thorlabs Worldwide Contacts

© 2016 Thorlabs GmbH
We aim to develop and produce the best solution for your application
in the field of optical measurement technique. To help us to live up to
your expectations and improve our products permanently we need
your ideas and suggestions. Therefore, please let us know about
possible criticism or ideas. We and our international partners are
looking forward to hearing from you.
Thorlabs GmbH
Warning
Sections marked by this symbol explain dangers that might result in
personal injury or death. Always read the associated information
carefully, before performing the indicated procedure.
Please read these advices carefully!
This manual also contains "NOTES" and "HINTS" written in this form.
Attention
Paragraphs preceeded by this symbol explain hazards that could
damage the instrument and the connected equipment or may cause
loss of data.
Note
4

© 2016 Thorlabs GmbH
1 General Information
5
1 General Information
The PM320E Benchtop Optical Power and Energy Meter is designed to measure the optical
power of laser light or other monochromatic or near monochromatic light sources and the
energy of pulsed light sources.
The dual channel design and compatibility to all Thorlabs “C-Series” Photodiode, Thermal,
Pyroelectric sensors as well as common Photodiode detectors, thermopiles and pyroelctric
elements, combined with afast USB device interface open awide range of applications in
Manufacturing, Quality Control, Quality Assurance, and R&D.
The provided software, including drivers and applications for LabVIEW and Cmakes it easy to
integrate the instrument in test and measurement systems.
1.1 Safety
Attention
All statements regarding safety of operation and technical data in this instruction manual
will only apply when the unit is operated correctly as it was designed for.
Prior to applying power to the PM320E, make sure that the protective conductor of the 3
conductor mains power cord is correctly connected to the protective earth ground
contact of the socket outlet! Improper grounding can cause electric shock resulting in
damage to your health or even death!
Also make sure that the line voltage setting of the fuse holder at the rear panel agrees
with your local supply and that the corresponding fuses are inserted. If not, please
change the line voltage setting (see section Line Voltage Setting)and the mains fuses
(see section Exchange Mains Fuses).
The PM320E must not be operated in explosion endangered environments!
Do not remove covers! Do not obstruct the air ventilation slots in the housing!
Do not open the cabinet, there are no parts serviceable by the operator inside!
Refer servicing to qualified personnel!
Only with written consent from Thorlabs may changes to single components be made or
components not supplied by Thorlabs be used.
This precision device is only serviceable if properly packed into the complete original
packaging. If necessary, ask for areplacement package prior to return.
Attention
The following statement applies to the products covered in this manual, unless
otherwise specified herein. The statement for other products will appear in the
accompanying documentation.
This equipment has been tested and found to comply with the limits for aClass Bdigital
device, pursuant to part 15 of the FCC Rules and meets all requirements of the Canadian
Interference-Causing Equipment Standard ICES-003 for digital apparatus. These limits
are designed to provide reasonable protection against harmful interference when the
equipment is operated in acommercial environment. This equipment generates, uses,
and can radiate radio frequency energy and, if not installed and used in accordance with
the instruction manual, may cause harmful interference to radio communications.
Operation of this equipment in aresidential area is likely to cause harmful interference in
which case the user will be required to correct the interference at his own expense.

© 2016 Thorlabs GmbH6
PM320E
Thorlabs is not responsible for any radio television interference caused by modifications
of this equipment or the substitution or attachment of connecting cables and equipment
other than those specified by Thorlabs.The correction of interference caused by such
unauthorized modification, substitution or attachment will be the responsibility of the
user.
The use of shielded cables is required when connecting sensor, photodiode and control
inputs and outputs of this equipment to any and all optional peripheral or host devices.
Failure to do so may violate FCC and ICES rules.
Attention
Mobile telephones, cellular phones or other radio transmitters are not to be used within
the range of three meters of this unit since the electromagnetic field intensity may then
exceed the maximum allowed disturbance values according to IEC 61326-1.
This product has been tested and found to comply with the limits according to
IEC 61326-1 for using connection cables shorter than 3meters (9.8 feet).
Vous pouvez trouver les traductions françaises des paragraphes ayant trait àla sécurité
d'utilisation de ce produit sur le lien suivant:
http://www.thorlabs.com/thorcat/19300/PM320E-CSADocument(Français).pdf
Vous pouvez aussi simplement scanner le code QR
1.2 Ordering Codes and Accessories
Ordering Code
Description
PM320E
Dual Channel Benchtop Power and Energy Meter
Please visit our homepage http://www.thorlabs.com for various power and energy sensors, and
accessories like fiber adapters, posts and post-holders, data sheets and further information.

© 2016 Thorlabs GmbH
2 Getting Started
7
2 Getting Started
2.1 Parts List
Inspect the shipping container for damage.
If the shipping container seems to be damaged, keep it until you have inspected the contents
and you have inspected the PM320E mechanically and electrically.
Verify that you have received the following items within the package:
1. 1 PM320E
2. 1 Power cord, connector according to ordering country
3. 2 Replacement mains fuses
4. 1 USB cable
5. 1 Operation manual
6. 1 CD "Applications and Driver"
2.2 Preparation
Attention
Prior to switching on your PM320E please check if the line voltage setting (see voltage
selector at the rear panel) corresponds to your mains voltage and make sure the correct
fuses are inserted!
Therefore please see sections Line Voltage Setting and Exchange Mains Fuses.
Turn the unit on by pressing the power switch.
After switching on the unit, the graphics display will show the device status and then jump to the
dual channel screen.
The PM320E is immediately ready to use after turning on. The rated accuracy is reached,
however, after awarming-up time of approx. 10 minutes.
If required, connect the chassis ground via the banana connector jack to ground potential of the
external optical setup.

© 2016 Thorlabs GmbH8
PM320E
2.3 Operating Elements
2.3.1 Front Panel
1
Display
2
Control Knob
3
Power Switch
4
Soft Keys
5
6
7
Display Selector CH1
8
Photo Diode Input CH1
9
Photo Diode Input CH2
10
Display Selector CH2