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THORLABS PM100D User Manual

THORLABS PM100D
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6.4 PM100D SCPI Commands
the first response followed by the complete second response. To avoid this, do not
send a query command without reading the response. When you cannot avoid this
situation, send a device clear before sending the second query command.
SCPI Command Terminators
A command string sent to the power/energy meter must terminate with a <new line>
character. The IEEE-488 EOI (end-or-identify) message is interpreted as a <new
line> character and can be used to terminate a command string in place of a <new
line> character. A <carriage return>
followed by a <new line> is also accepted. Command string termination will always
reset the current SCPI command path to the root level.
IEEE-488.2 Common Commands
The IEEE-488.2 standard defines a set of common commands that perform functions
like reset, self-test, and status operations. Common commands always begin with an
asterisk ( * ), are four to five characters in length, and may include one or more
parameters. The command keyword is separated from the first parameter by a blank
space. Use a semicolon ( ; ) to separate multiple commands as shown below:
"*RST; *CLS; *ESE 32; *OPC?"
SCPI Parameter Types
The SCPI language defines several different data formats to be used in program
messages and response messages.
Numeric Parameters Commands that require numeric parameters will accept all
commonly used decimal representations of numbers including optional signs, decimal
points, and scientific notation.
Special values for numeric parameters like MINimum, MAXimum, and DEFault are
also accepted. You can also send engineering unit suffixes with numeric parameters
(e.g., M, K, or u). If only specific numeric values are accepted, the power/energy meter
will automatically round the input numeric parameters. The following command uses
a numeric parameter:
POWer:REFerence {MINimum|MAXimum|DEFault|<numeric_value>[W]}
Discrete Parameters Discrete parameters are used to program settings that have a
limited number of values (like W, DBM). They can have a short form and a long form
just like command keywords. You can mix upper- and lower-case letters. Query
responses will always return the short form in all upper-case letters. The following
command uses discrete parameters:
POW:UNIT {W|DBM}
Boolean Parameters Boolean parameters represent a single binary condition that is
either true or false. For a false condition, the power/energy meter will accept “OFF” or
0”. For a true condition, the meter will accept “ON” or “1”. When you query a boolean
setting, the instrument will always return “0” or “1”. The following command uses a
boolean parameter:
CURRent:RANGe:AUTO {OFF|0|ON|1}
String Parameters String parameters can contain virtually any set of ASCII
characters. A string must begin and end with matching quotes; either with a single
quote or with a double quote. You can include the quote delimiter as part of the string
by typing it twice without any characters in between. The following command uses a
string parameter:
DIAG:CALString <quoted string>
45

Table of Contents

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THORLABS PM100D Specifications

General IconGeneral
Data LoggingYes
Storage Temperature Range-20 °C to 70 °C
Power Accuracy±0.5% of reading
InterfaceUSB
Power SupplyUSB or AC Adapter
Display Update Rate10 Hz
Detector TypePhotodiode or Thermopile (Sensor Dependent)

Summary

General Information

Safety Precautions

General safety precautions and warnings for operating the PM100D meter.

Ordering Codes and Accessories

Lists all available order codes for the PM100D and compatible accessories.

Getting Started

Unpacking the Device

Instructions for inspecting and verifying the contents of the PM100D package.

Initial Preparation

Steps to prepare the PM100D for initial use, including connecting sensors and power.

Physical Overview

Front Panel Description

Detailed description of the PM100D's front panel controls and display elements.

Side Panel Description

Description of the connectors and controls located on the side of the PM100D.

Bottom and Rear Panel Features

Details the bottom mounting thread and rear view features of the PM100D.

Display Options Overview

Overview of the different display modes and screens available on the PM100D.

Operating the PM100D

Connecting a Power or Energy Sensor

Details how to connect Thorlabs C-Series sensors to the PM100D for power and energy measurements.

Navigating the PM100D Menus

Explains how to use the navigation keys and soft buttons to interact with the PM100D menu system.

System Settings Configuration

Configuration options for language, backlight, brightness, LCD contrast, sound, and shutdown.

Numeric Display Measurement Setup

How to configure the main display, sub-displays, and bar-graph for power/energy readings.

Range Control for Measurements

Explains how to select manual or auto ranges for power and energy measurements.

Wavelength Correction for Accuracy

How to set the operating wavelength for accurate spectral response measurements.

Readout Configuration Options

Setting units, min/max monitor, and other display parameters for measurements.

Sensor Zeroing Procedure

Procedure for zeroing the sensor to compensate for dark current or thermal effects.

Attenuation and Gain Factor Settings

Setting attenuation or gain factors for accurate power/energy calculations.

Light Intensity Measurement Setup

Measuring power or energy density by setting the incident beam diameter.

Min/Max Monitor and Relative Measurements

Using min/max tracking and relative mode for power/energy drift and offset adjustments.

Sensor Temperature and Frequency Measurement

Displaying sensor temperature and measuring frequency/repetition rate of light sources.

Photodiode Sensor Operation

Information on using photodiode sensors, including bandwidth settings and calibration.

Thermal Power Sensor Operation

Overview of thermal sensors, their operation, and the readout acceleration feature.

Pyroelectric Energy Sensor Operation

Information on pyroelectric sensors for pulse energy, including trigger level settings.

Pyroelectric Measurement Features

Calculating average power, measuring repetition rate, area calculation, and using custom pyro sensors.

Measurement Display Options

Information on using different measurement display modes like statistics and needle.

Statistics Display Usage

How to access and interpret the statistical data collected during measurements.

Needle Display Mode

Using the needle display mode for laser tuning support and viewing power values.

Analog Output Functionality

Details on the amplified output signals and their voltage range calculations.

Tuning Sound and SD Card Usage

Enabling tuning sound for laser adjustment and managing data logging with SD cards.

Battery Charging Procedure

Information on recharging the PM100D's LiPo battery via AC adapter or USB.

Measurement Considerations

Choosing the Right Sensor

Guide to selecting the appropriate sensor based on light source and application requirements.

Reducing Measurement Noise

Techniques to minimize noise from grounding, cables, temperature, and ambient light.

Pulsed Signal Measurement Guidelines

Guidelines for accurately measuring pulsed signals with thermal and photodiode sensors.

Light Source Line Width Impact

Understanding the impact of light source line width on measurements and how to compensate.

Thermal Sensor Effects on Readings

How temperature differences and airflow affect thermal sensor readings.

Ambient and Stray Light Minimization

Minimizing measurement errors caused by ambient or stray light through zeroing and shielding.

Back Reflection and Beam Diameter

Avoiding back reflection and optimizing beam diameter for sensor measurements.

Fiber Based Measurement Practices

Best practices for measuring optical power from fibers using various Thorlabs sensors.

Pyroelectric Energy Measurement

Key parameters for choosing pyroelectric sensors and measuring pulse energy.

Computer Interface

PM100D Utility Software Overview

Overview of the utility software for remote operation, visualization, and data logging.

Utility Software Front Panel

Description of the PM100D Utility Software's front panel elements and data display.

Utility Software Display and Controls

Details on sub-displays, bargraph, statistics, data logging, and control buttons in the utility software.

Utility Software Functions

Explains various functions like display configuration, logging, reset, and setup saving in the utility software.

Firmware Update

Firmware Update Procedure

Steps to update the PM100D firmware using the DFU wizard.

Instrument Drivers

Driver Installation

Instructions for installing the PM100D USB drivers, requiring administrator privileges.

Instrument Driver Example

A LabVIEW example demonstrating how to use instrument drivers for measurement tasks.

SCPI Commands

Introduction to SCPI Language

Overview of SCPI language, its hierarchical structure, and command format.

Command Syntax and Separators

Details on command syntax, parameter types, and separators like colons and semicolons.

IEEE488.2 Common Commands

Explanation of standard common commands like *CLS, *RST, *TST?, *WAI.

Common Command Summary

A table summarizing common SCPI commands and their mnemonics and descriptions.

SCPI Command Reference

Detailed reference for specific SCPI commands like *IDN?, *OPC?, *RST, *TST?.

System Subsystem Commands

Commands for controlling system settings like beeper, error handling, date/time, and line frequency.

Status Subsystem Commands

Commands for managing status registers, event conditions, and filters.

Display Subsystem Commands

Commands to control display brightness and contrast.

Calibration Subsystem Commands

Command for retrieving calibration string information.

Sense Subsystem Commands

Commands for setting averaging rate, attenuation, zeroing, beam diameter, and wavelength.

Sense Power/Energy Commands

Commands for setting photodiode, thermopile, pyro-detector response, and current/energy ranges.

Sense Voltage/Frequency Commands

Commands for setting voltage, frequency ranges, and trigger level for energy mode.

Input Subsystem Commands

Commands for configuring photodiode filters, thermopile accelerator, and sensor adapter types.

Measurement Commands

Commands for initiating, configuring, measuring, fetching, and reading data.

LabVIEW SCPI Example

Demonstrates using SCPI commands with LabVIEW for instrument communication.

LabVIEW Example Details

Explanation of LabVIEW VIs for averaging rate, readout config, error log, and sensor information.

LabVIEW Block Diagrams

Visual representation of LabVIEW VIs for instrument setup, data acquisition, and measurement.

LabVIEW VI Descriptions

Detailed description of each LabVIEW VI used in the SCPI example.

Maintenance and Repair

Maintenance Procedures

Guidance on protecting the PM100D from damage and cleaning the unit.

Troubleshooting Common Issues

Common issues and solutions for the PM100D, including unit not working or negative readings.

Appendix

Warranty Information

Details the 24-month warranty terms and conditions for the PM100D unit.

Certifications and Compliances

Lists the certifications and standards the PM100D complies with, including EMC and safety standards.

Technical Data Specifications

Comprehensive technical specifications for the PM100D, including detector compatibility, display, and inputs.

Technical Data Details

Further technical specifications covering voltage inputs, analog outputs, memory, and accessories.

Technical Data Tables

Tables detailing performance specifications for current, voltage, and thermal sensor inputs.

Sensor Connector Pin Assignment

Diagram and description of the pin configuration for connecting custom sensors.

End of Life Policy (WEEE)

Thorlabs' policy for returning end-of-life electrical and electronic equipment.

Ecological Background

Information on the environmental impact of WEEE and the importance of recycling.

Thorlabs Addresses

Contact information and locations for Thorlabs offices and sales support worldwide.

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