PLEASE NOTE: Our software has been tested to work on a PC using Pro Versions of Windows software.  We have not tested on home level versions.  It has not been tested for Mac compatibility. (Please refer to the equipment's specification page to confirm which version of Windows Software your equipment/ILT software revision is compatible with.  If you experience any difficulty with your instrumentation or software, please email for assistance.)


NEW DataLight II Software Suite for Windows 7, Windows 8 and Windows 10
(ZIP File - Click on link to download)

File Name:

(NOTE: FTDI drivers should be saved in one of the following locations:  "C:\Program Files" or "C:\Program Files (x86)" \International Light Technologies \ "ILT5000" or "ILT1000" software suite \ FTDI Driver \ CDM V2.12.00 WHQL Certified.exe. Please use the ILT provided drivers.)

The new and improved DataLight II software suite includes all software and firmware needed to run any version ILT1000 and ILT5000. Both the DataLight II software and DataLight II Firmware upgrades are located in the zip file. DataLight II includes our all new “Meter” app designed to maintain the look and feel of the Industry Standard ILT1700 Research Radiometer. Also included are Trend, Bar, Datalog. CLI (CLI will run also run on MAC) and our new pre-release experimental Flash Application version for measurement of flashes as brief as 20 µsec (i.e. with a 200 µsec flash you receive 10 samples/flash.)

NOTE: Users will need to perform a firmware upgrade included in the download.


MD5, SHA-1, SHA-256 Verification Checksums for DataLight II Software:
MD5, SHA-1, and SHA-256 checksum values are used to verify the data integrity of a downloaded file by comparing it to the checksum value of the original file. Linux/UNIX and Mac devices have this capability built-in; for Windows, several free utilities are available on the web to help you determine the checksum value of your downloaded files.

For file:
FILESIZE: 10,782,461
MD5: 69bd4fbaea84cb07d63188e532990680
SHA1: 6f5f6b7c278bfcd9e849973b9e8f44b745eb83fc
SHA-256: 4ddddf5d24a4976033d19a3fb07f12d7798a9d91e01f4747bd773d7af4c71426



NEW ILT1000/ILT5000 Virtual Instrument Drivers (ZIP File - Click on link to download)

LabView Virtual Instrument Drivers to be used with the ILT1000/ILT5000 API. See Command and Control Manual for configuration.


DataLight Software Suite for Windows XP (ZIP File - Click on link to download)

DataLight is the original version of ILT1000 software designed to run on XP. Before using DataLight, new customers will need to do a firmware change to assure compatibility. Both the DataLight software and DataLight Firmware are located in the supplied zip file. DataLight includes Trend, Bar, Datalog, and CLI (CLI will run also run on MAC). DataLight does not include the “Meter” app and is not compatible with ILT5000 units.


Original Labview Virtual Instrument Drivers (RS-232 only)

LabVIEW® Virtual Instrument drivers for International Light IL1400 and IL1700 Radiometers. Can be used with or without the full-version of LabVIEW®


ILT1700 / ILT1400 USB Data Logging Software

Program that allows the end-user to perform data-acquisition with USB equipped ILT1700 and ILT1400 Radiometers. Requires USB equipped ILT1700 or ILT1400, LabView and either the ILT1700 32-bit or 64-bit USB Drivers


ILT1700/IL1700 Software Connection Troubleshooting Guide (PDF)

PDF guide to help troubleshoot problems connecting your ILT1700 or IL1700 to a PC via USB or RS232 connections.


SpectrILight Tools Analysis Pak v.1.0 Irradiance

Please Note: This is NOT the new SpectrILight III Spectral Analysis/Spectrometer Control Software. This is a separate Excel spreadsheet analysis package that requires data export from the RPS900/ILT900 spectrometer control software. This came standard with all RPS900/ILT900 spectrometers prior to the SpectrILight III software.

SpectriLight Tools is a powerful Excel® app that accepts 1 nm resolution input files and calculates all standard spectral parameters such as lux, scotopic intensity, UVA, B, C, VIS, PAR including Einsteins, Chromaticity, Dominant and Complementary wavelength, Color Purity, CCT, CRI, Solar Simulator and more.


ILT1000 Apps v2.3.3 (ZIP File) Obsolete - see DataLight and DataLight II (above)


Links to Light Calculator ZIP Files

Beam Intensity Measurement Range Calculator (.zip file - extract and run the .exe file)

Exposure value (EV) / Lux Converter (.zip file - extract and run the .exe file)

Foot Candle / Lux Converter (.zip file - extract and run the .exe file)

Inverse Square Law of Light Calculator (.zip file - extract and run the .exe file)

QNDS/Attenuator-Self-Calibration-Calculator (.zip file - extract and run the .exe file)

Lux/Foot-candles to Total Lumens Converter (.zip file - extract and run the .exe file)

Watts/m2 or W/cm2 to Total Watts Converter (.zip file - extract and run the .exe file)

µMoles (µEinsteins) / Lux Converter (.zip file - extract and run the .exe file) - DOWNLOAD NOT AVAILABLE AT THIS TIME