Quasar Wireless Interface Power Meter
Quasar Wireless Interface Power Meter


Drahtloses Leistungs- und Energiemessgerät

Mit dem Quasar-Modul können Sie Ihren Ophir Sensor nicht nur unabhängig als mobiles Messgerät für Laserleistung und -energie einsetzen, Sie können außerdem PC bzw. Laptop frei platzieren, ohne auf Verbindungskabel Rücksicht nehmen zu müssen.

  • Die drahtlose Quasar-Schnittstelle verbindet sich mit den meisten Standard-Messköpfen von Ophir und überträgt die Daten zu Ihrem PC 
  • Reichweite beträgt je nach Umgebung zwischen 10 und 30 Meter
  • Akkubetrieb mit >40 Stunden Laufzeit
  • Macht aus Ihrem PC ein vollwertiges Messgerät für Laserleistung und -energie.
  • Aufzeichnung von Leistung, Energie, Durchschnittswerten, Statistiken, Histogrammen etc.
  • Gleichzeitige Steuerung von bis zu 7 Quasar-Modulen über einen PC
StarViewer App - verwandelt Ihr Android-basiertes Smartphone in ein Laserleistungsmessgerät!


  • Yes
  • Yes
  • Yes
  • No
  • Yes
  • No
  • Bluetooth
  • No
  • Internal Battery or Charger
  • N/A
  • N/A
  • N/A
  • N/A
  • 500Hz
  • No
  • No
  • No
  • CE, UKCA, China RoHS
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How far can the Quasar really transmit data and can it go through walls?

In actual testing done at customer sites, using the high power option, there was not a place within 100 meters that we could not connect, including going through multiple walls that were made of drywall. The only time we lost transmission was when the walls were made of concrete or we had to pass through some metal doors. With normal labs and offices the signal went right through. In several cases, including a solar power scribing application where windowed doors had to be closed, we were getting a continuous connection as we walked around the spacious building into offices and labs. With the standard range option, the range should be about 1/3 of this i.e. 30 meters.

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At what frequency does the Quasar work? Might there be concerns with interference from other devices?

Quasar runs on Bluetooth, the 2.4-2.5GHz "ISM" band (ISM = Industrial, Scientific and Medical). This is the same band used by WiFi and other technologies. This frequency was chosen as it is available without restrictions around the world. Because other technologies also use it, Bluetooth has to be designed to tolerate interference from other sources. It does this by swapping between 79 channels, at 2.402GHz up to 2.480GHz (each channel is 1MHz). This type of modulation is called FHSS, Frequency Hopping Spread Spectrum. If data does not get through on one channel it retries on a different channel. Other technologies, such as WiFi, use different techniques.


This design makes Bluetooth very robust. In principle, if there is another radio transmitter nearby that is using the same 2.4-2.5GHz band AND using the same modulation scheme, interference is a possibility, but not a real likelihood. If the other transmitter is using a different band, there should not be a problem, because there is very little interference produced at other higher or lower frequencies - this is checked during qualification of these devices for CE and FCC in RF test labs.


In general, Bluetooth is in common use everywhere, by cellular phone headsets, for example, so interference is not normally a significant risk factor.

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Will my Quasar work with my Android device?

Yes, we have an Android app that you can download from the Android Market place to run your Quasar on your Android device. Search for Ophir Optronics Quasar. You need to be running Android 2.3.3 or higher.

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How do I pair the Quasar interface with my computer?

If using the Bluetooth radio USB adaptor supplied with the Quasar, the adaptor software should be installed first. Once that is complete, and the StarLab software installation is complete, you are ready to connect the Quasar. You may need to change the discovery settings on your PC to allow the Quasar to connect.

To accomplish this, go to the Bluetooth Settings on your PC and ensure you have checked "Allow Bluetooth devices to find this computer".

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Do I need to recalibrate my instrument? How often must it be recalibrated?

Unless otherwise indicated, Ophir sensors and meters should be recalibrated within 18 months after initial purchase, and then once a year after that.

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What is Ophir Statement of Volatility of Memory for Pulsar

See attached

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  • PC Software & Drivers

    This section describes various ways to interface the Ophir meter to your PC as well as the software options available.


  • StarLab

    The StarLab application together with an Ophir meter turns your PC or laptop into a full-fledged laser power/energy meter. Supports most Ophir laser power/energy sensors. Up to 8 sensors can be displayed at once on one PC. By using the Ophir COM Object, you can control the device from your own application. Supports the Ariel, Centauri, StarBright, StarLite, Juno, Juno+, Juno-RS, Nova II, Vega, Pulsar-1/2/4, Quasar, EA-1 and IPM sensor devices.

  • StarViewer - Quasar
    StarViewer turns your Android based smartphone into a portable Ophir laser power/energy measurement monitor. It works with Ophir Thermopile and Photodiode based sensors that are attached to a Quasar. StarViewer works also with Ariel and Juno.
  • Firmware - Quasar

    Embedded Software for Quasar Interface

    Latest Quasar firmware (version 1.25)

    Use StarLab to upgrade the firmware of your device. Press Here for step-by-step instructions.


Wireless Laser Measurements with Ophir’s Quasar Wireless Laser Measurements with Ophir’s Quasar
StarLab 3.0: Introduction and First Steps StarLab 3.0: Introduction and First Steps StarLab 3.0: Introduction and First Steps

This video explains the various items on the StarLab screen, and shows you how to perform basic laser measurements.
Part 1 of a series of video segments teaching you how to use StarLab.

StarLab 3.0: Second Steps StarLab 3.0: Second Steps StarLab 3.0: Second Steps

Sometimes we want to not only get a reading, but perform additional processing on the reading. This video shows you how to use various functions in StarLab, such as Averaging, Scale Factor, Normalize, Density, etc.

Laser Measurement PC Interfaces Laser Measurement PC Interfaces Laser Measurement PC Interfaces

If all your laser measurement work involves a laptop or a PC, rather than a stand-alone meter, one of Ophir’s direct-to-PC interfaces could be an ideal solution. These are full-fledged Laser Power and Energy meters, but instead of having a separate on-board display, the PC becomes your display. In this video you will learn about the range of PC Interfaces available from Ophir.

The Ophir Quasar is a Bluetooth interface that enables you to connect a laser sensor to a PC, or to an Android smartphone or tablet, without cables.
In this short video, you’ll learn what it can do and how to get started using it.


Tutorials and Articles

QUASAR Laser power measurement through the air

One of the inconveniences in the measurement of laser power and energy is what to do with the cables connecting the display to the sensor. These cables are of a limited flexibility and they clutter the workspace where the measurement is to be done. Sometimes, due to their stiffness, a motion of the cable moves the sensors and misaligns the set up.


Yield Improvement by Online Measurement and Analysis of Laser Energy Using Ophir’s Quasar

The Quasar wireless Bluetooth laser power and energy measurement interface allows quick and trouble free installation of complex measurement systems in an existing manufacturing environment, with a minimum of cable laying and disturbance to the facility’s operations.

This was demonstrated in a project undertaken recently, and is a typical example of what of multi-user systems see in the field.


Since introducing the first mobile phone power meter app we have been getting a lot of questions about it. Here are some of the more frequent ones:

Ophir Power/Energy Meter Calibration Procedure and Traceability/Error Analysis

This document discusses the interpretation and basis for stated measurement accuracy of Ophir Laser Power/Energy meters.
1. General Discussion
2. Combination of Errors and Total Error
3. Analysis of Power and Energy Calibration Errors
4. Detailed Analysis of Power and Energy Calibration Errors


Laser Measurements in Materials Processing: How and When They Absolutely, Positively Must Be Made

19th century British physicist and engineer William Thomson, 1st Baron Kelvin, was the first to say, “If you can’t measure it, you can’t improve it.” When applying this principle to improving laser-based processes, there are a variety of parameters that must be measured. Given the continuously rising power of laser systems in material processing, the requirements for measurement systems are more challenging than ever. Which technologies are available to measure high-power lasers? How often should they be measured? What measurements should be tracked? When this data is collected, what should be done with it? Weiterlesen...

How do I know what range, or scale, to set my power/energy meter to? And what happens if I go over range?

Each given range represents one level of gain of an internal amplifier. The electronics, as always, have a limited Dynamic Range. If the measured signal is too low, in other words near the bottom of the range, then it may be lost in the noise and the reading will be inaccurate and noisy. If it’s too high – there may be saturation issues. To give an instrument a usefully wide dynamic range, multiple scales or ranges are used. Switching from range to range can be automatic (“Autorange”), or manual. Autoranging simply starts automatically at the least sensitive range and works its way down the ranges, sampling the signal as it goes, till it finds a range at which the signal is properly detected. Note, by the way, that only in POWER mode is Autoranging available. If we are working in Single Shot Energy mode, there is no Autoranging – simply because when we are measuring a single pulse, the instrument has no opportunity to work its way down the ranges as in Power mode.


5 Situations Where Laser Performance Measurement is Necessary

Measuring the performance of a laser has possible for a number of years and is accomplished with a variety of techniques. These electronic laser measurement solutions give the laser user more relevant, time-based data that shows trends in laser performance rather than single data points. While these solutions have provided laser users with the ability to present data in a simple and easy to understand manner, the application of the data still seems to be unclear to many laser users. Weiterlesen...

Power and Energy Meters: From Sensors to PC

From the time of its invention, more than 30 years ago, the laser power meter was generally comprised of two parts: a measurement sensor and a display meter. It was always considered better to have such an arrangement with a cable connecting the two because of the hazardous nature of the laser beam. As the display of the results is separated from the measurement sensor, so are the eyes of the operator separated from the laser beam. Weiterlesen...


Customers that purchase the above items also consider the following items. Ophir-Spiricon meters and sensors include a standard manufacturers warranty for one year. Add a one year Extended Warranty to your meter or sensor, which includes one recalibration.
  • Replacement battery pack

    Battery Pack for Nova II, Vega and Quasar


    Replacement battery pack for Nova II, Vega and Quasar

  • N Polarity Power Supply/Charger

    Power Supply/Charger for Centauri, Vega, Nova II, LaserStar, Nova, EA-1, Pulsar, Quasar, 6K-W, 120K-W and fan cooled sensors (1 unit supplied with these products)