Ossila T2005 User manual

enabling materials science Ossila.com
LED MEASUREMENT
SYSTEM
USER MANUAL
Manual version: 3.0.A
Product code: T2005
Product Version: 3.0
Software version: 3.0

LED Measurement System User Manual
Ossila.com 1 Ossila Limited © 2022
Contents
1. Overview .......................................................................................................................................................2
2. EU Declaration of Conformity.....................................................................................................................3
3. Safety.............................................................................................................................................................6
3.1 Use of Equipment.......................................................................................................................................................... 6
3.2 Hazard Icons .................................................................................................................................................................. 6
3.3 General Hazards ............................................................................................................................................................ 6
3.4 Power Cord Safety......................................................................................................................................................... 6
3.5 Servicing ......................................................................................................................................................................... 7
3.6 Health and Safety –Servicing....................................................................................................................................... 7
4. Requirements...............................................................................................................................................8
5. Unpacking.....................................................................................................................................................8
5.1 Packing List..................................................................................................................................................................... 8
5.2 Damage Inspection........................................................................................................................................................ 8
6. Specifications................................................................................................................................................9
7. System Components..................................................................................................................................10
8. Installation..................................................................................................................................................11
9. Operation....................................................................................................................................................11
9.1 Measurement Types.................................................................................................................................................... 11
9.2 Quick Start Guide......................................................................................................................................................... 13
9.3 Software Settings......................................................................................................................................................... 13
10. Test Device..................................................................................................................................................21
10.1 Taking a Measurement ............................................................................................................................................... 21
11. Troubleshooting.........................................................................................................................................23
11.1 Installation and Setup ................................................................................................................................................. 23
11.2 Error Messages and Warnings ................................................................................................................................... 24
12. Related Products........................................................................................................................................25
12.1 Related Consumables ................................................................................................................................................. 25
12.2 Related Equipment...................................................................................................................................................... 25

LED Measurement System User Manual
Ossila.com 2 Ossila Limited © 2022
1. Overview
The Ossila LED Measurement System is a low-cost solution for reliable current-voltage-luminance
measurements of light emitting diodes. The system is controlled by specially designed software
which can perform multiple IVL measurements and measure the current, luminance, and
efficiency over long periods of time.

LED Measurement System User Manual
Ossila.com 3 Ossila Limited © 2022
2. EU Declaration of Conformity (DoC)
We
Company Name: Ossila BV
Postal Address: Biopartner 3 building, Galileiweg 8
Postcode: 2333 BD Leiden
Country: The Netherlands
Telephone number: [phone]
Email Address: [e-mail]
declare that the DoC is issued under our sole responsibility and
belongs to the following product:
Product: Ossila LED Measurement System (T2005A3/T2005B3/T2005C3/T2005E3)
Serial number: T2005A3-xxxx, T2005B3-xxxx, T2005C3-xxxx, T2005E3-xxxx
Object of declaration:
Ossila LED Measurement System (T2005A3/T2005B3/T2005C3/T2003E3)
The object of declaration described above is in conformity with the
relevant Union harmonisation legislation:
EMC Directive 2014/30/EU
RoHS Directive 2011/65/EU
Signed:
Name: Dr James Kingsley
Place: Leiden
Date: 16/11/2021

LED Measurement System User Manual
Ossila.com 4 Ossila Limited © 2022
Декларация за съответствие на ЕС
Производител: Ossila BV, Biopartner 3 building, Galileiweg 8, 2333 BD Leiden, NL.
Декларира с цялата си отговорност, че посоченото оборудване съответства на приложимото законодателство на
ЕС за хармонизиране, посочено на предходната(-ите) страница(-и) на настоящия документ.
[Čeština] Prohlášení o shodě EU
Výrobce: Ossila BV, Biopartner 3 building, Galileiweg 8, 2333 BD Leiden, NL.
Prohlašujeme na vlastní odpovědnost, že uvedené zařízeni je v souladu s příslušnými harmonizačními předpisy EU
uvedenými na předchozích stranách tohoto dokumentu.
[Dansk] EU-overensstemme lseserklærin g
Producent: Ossila BV, Biopartner 3 building, Galileiweg 8, 2333 BD Leiden, NL.
Erklærer herved, at vi alene er ansvarlige for, at det nævnte udstyr er i overensstemmelse med den relevante EU-
harmoniseringslovgivning, der er anført på den/de foregående side(r) i dette dokument.
[Deutsch] EU-Konformitätserklärung
Hersteller: Ossila BV, Biopartner 3 building, Galileiweg 8, 2333 BD Leiden, NL.
Wir erklären in alleiniger Verantwortung, dass das aufgeführte Gerät konform mit der relevanten EU-
Harmonisierungsgesetzgebung auf den vorangegangenen Seiten dieses Dokuments ist.
[Eesti keel] ELi vastavusavaldus
Tootja: Ossila BV, Biopartner 3 building, Galileiweg 8, 2333 BD Leiden, NL.
Kinnitame oma ainuvastutusel, et loetletud seadmed on kooskõlas antud dokumendi eelmisel lehelküljel / eelmistel
lehekülgedel ära toodud asjaomaste ELi ühtlustamise õigusaktidega.
[Ελληνικά] Δήλωση πιστότητας ΕΕ
Κατασκευαστής: Ossila BV, Biopartner 3 building, Galileiweg 8, 2333 BD Leiden, NL.
Δηλώνουμε υπεύθυνα όn ο αναφερόμενος εξοπλισμός συμμορφώνεται με τη σχεnκή νομοθεσία εναρμόνισης της ΕΕ που
υπάρχει σnς προηγούμενες σελίδες του παρόντος εγγράφου.
[Español] Declaración de conformidad UE
Fabricante: Ossila BV, Biopartner 3 building, Galileiweg 8, 2333 BD Leiden, NL.
Declaramos bajo nuestra única responsabilidad que el siguiente producto se ajusta a la pertinente legislación de
armonización de la UE enumerada en las páginas anteriores de este documento.
[Français] Déclaration de conformité UE
Fabricant: Ossila BV, Biopartner 3 building, Galileiweg 8, 2333 BD Leiden, NL.
Déclarons sous notre seule responsabilité que le matériel mentionné est conforme à la législation en vigueur de l'UE
présentée sur la/les page(s) précédente(s) de ce document.
[Hrvatski] E.U izjava o sukladnosti
Proizvođač: Ossila BV, Biopartner 3 building, Galileiweg 8, 2333 BD Leiden, NL.
Izjavljujemo na vlastitu odgovornost da je navedena oprema sukladna s mjerodavnim zakonodavstvom EU-a o usklađivanju
koje je navedeno na prethodnoj(nim) stranici(ama) ovoga dokumenta.
[Italiano] Dichiarazione di conformità UE
Produttore: Ossila BV, Biopartner 3 building, Galileiweg 8, 2333 BD Leiden, NL.
Si dichiara sotto la propria personale responsabilità che l'apparecchiatura in elenco è conforme alla normativa di
armonizzazione UE rilevante indicata nelle pagine precedenti del presente documento.
[Latviešu] ES atbils tības deklarācija
Ražotājs: Ossila BV, Biopartner 3 building, Galileiweg 8, 2333 BD Leiden, NL.
Ar pilnu atbilclību paziņojam, ka uzskaitītais aprīkojums atbilst attiecīgajiem ES saskaņošanas tiesību aktiem, kas minēti
iepriekšējās šī dokumenta lapās.
[Lietuvių k.] ES atitikties deklaracija
Gamintojas: Ossila BV, Biopartner 3 building, Galileiweg 8, 2333 BD Leiden, NL,
atsakingai pareiškia, kad išvardinta įranga atitinka aktualius ES harmonizavimo teisės aktus, nurodytus ankstesniuose šio
dokumento

LED Measurement System User Manual
Ossila.com 5 Ossila Limited © 2022
[Magyar] EU-s megfelelőségi nyilatkozat
Gyártó: Ossila BV, Biopartner 3 building, Galileiweg 8, 2333 BD Leiden, NL.
Kizárólagos felelösségünk mellett kijelentjük, hogy a felsorolt eszköz megfelel az ezen dokumentum előző oldalán/oldalain
található EU-s összehangolt jogszabályok vonatkozó rendelkezéseinek.
[Nederlands] EU-Conformiteitsverklaring
Fabrikant: Ossila BV, Biopartner 3 building, Galileiweg 8, 2333 BD Leiden, NL.
Verklaart onder onze uitsluitende verantwoordelijkheid dat de vermelde apparatuur in overeenstemming is met de
relevante harmonisatiewetgeving van de EU op de vorige pagina('s) van dit document.
[Norsk] EU-samsvarserklæ ring
Produsent: Ossila BV, Biopartner 3 building, Galileiweg 8, 2333 BD Leiden, NL.
Erklærer under vårt eneansvar at utstyret oppført er i overholdelse med relevant EU-harmoniseringslavverk som står på
de(n) forrige siden(e) i dette dokumentet.
[Polski] Deklaracja zgodności Unii Europejskiej
Producent: Ossila BV, Biopartner 3 building, Galileiweg 8, 2333 BD Leiden, NL.
Oświadczamy na własną odpowiedzialność, że podane urządzenie jest zgodne ze stosownymi przepisami
harmonizacyjnymi Unii Europejskiej, które przedstawiono na poprzednich stronach niniejszego dokumentu.
[Por tuguês] Declaração de Conformidade UE
Fabricante: Ossila BV, Biopartner 3 building, Galileiweg 8, 2333 BD Leiden, NL.
Declara sob sua exclusiva responsabilidade que o equipamento indicado está em conformidade com a legislação de
harmonização relevante da UE mencionada na(s) página(s) anterior(es) deste documento.
[Română] Declaraţie de conformitate UE
Producător: Ossila BV, Biopartner 3 building, Galileiweg 8, 2333 BD Leiden, NL.
Declară pe proprie răspundere că echipamentul prezentat este în conformitate cu prevederile legislaţiei UE de armonizare
aplicabile prezentate la pagina/paginile anterioare a/ale acestui document.
[Slovensky] Vyhlásenie o zhode pre EÚ
Výrobca: Ossila BV, Biopartner 3 building, Galileiweg 8, 2333 BD Leiden, NL.
Na vlastnú zodpovednosť prehlasuje, že uvedené zariadenie je v súlade s príslušnými právnymi predpismi EÚ o
harmonizácii uvedenými na predchádzajúcich stranách tohto dokumentu.
[Slovenščina] Izjava EU o skladnosti
Proizvajalec: Ossila BV, Biopartner 3 building, Galileiweg 8, 2333 BD Leiden, NL.
s polno odgovornostjo izjavlja, da je navedena oprema skladna z veljavno uskladitveno zakonodajo EU, navedeno na
prejšnji strani/prejšnjih straneh tega dokumenta.
[Suomi] EU-vaatimustenm ukaisuusvakuutus
Valmistaja: Ossila BV, Biopartner 3 building, Galileiweg 8, 2333 BD Leiden, NL.
Vakuutamme täten olevamme yksin vastuussa siitä, että tässä asiakirjassa luetellut laitteet ovat tämän asiakirjan sivuilla
edellisillä sivuilla kuvattujen olennaisten yhdenmukaistamista koskevien EU-säädösten vaatimusten mukaisia.
[Svenska] EU-försäkran om överensstämmelse
Tillverkare: Ossila BV, Biopartner 3 building, Galileiweg 8, 2333 BD Leiden, NL.
Vi intygar härmed att den utrustning som förtecknas överensstämmer med relevanta förordningar gällande EU-
harmonisering som fmns på föregående sidor i detta dokument

LED Measurement System User Manual
Ossila.com 6 Ossila Limited © 2022
3. Safety
3.1 Use of Equipment
The Ossila LED Measurement System is designed to be used as instructed. It is intended for use
under the following conditions:
•Indoors in a laboratory environment (Pollution Degree 2)
•Altitudes up to 2000m
•Temperatures of 5°C to 40°C; maximum relative humidity of 80% up to 31°C.
The unit is supplied with a 24 VDC power adapter, in accordance with European Commission
regulations and British Standards. Use of any other electrical power cables, adaptors, or
transformers is not recommended.
3.2 Hazard Icons
The following symbols can be found at points throughout the rest of the manual. Note and read
each warning before attempting any associated operations associated with it:
Table 3.1. Hazard warning labels used in this manual.
Symbol
Associated Hazard
Electrical shock
3.3 General Hazards
Before installing or operating the Ossila LED Measurement System there are several health and
safety precautions which must be followed and executed to ensure safe installation and operation.
3.4 Power Cord Safety
Emergency power disconnect options: use the power cord as a disconnecting method
and remove from wall. To facilitate disconnect, make sure the power outlet for this cord
is readily accessible to the operator.

LED Measurement System User Manual
Ossila.com 7 Ossila Limited © 2022
3.5 Servicing
If servicing is required, please return the unit to Ossila Ltd. The warranty will be invalidated if:
•Modification or service has been carried out by anyone other than an Ossila engineer.
•The Unit has been subjected to chemical damage through improper use.
•The Unit has been operated outside the usage parameters stated in the user
documentation associated with the Unit.
•The Unit has been rendered inoperable through accident, misuse, contamination,
improper maintenance, modification, or other external causes.
3.6 Health and Safety –Servicing
Servicing should only be performed by an Ossila engineer. Any modification or alteration
may damage the equipment, cause injury, or death. It will also void your equipment’s
warranty.

LED Measurement System User Manual
Ossila.com 8 Ossila Limited © 2022
4. Requirements
Table 4.1 details the power requirements for the Ossila LED Measurement System, and the
minimum computer specifications for the Ossila LED IVL software.
Table 4.1. Ossila LED Measurement System requirements.
Power
24 VDC (supplied with the system)
Operating Systems
Windows 10 or 11 (32-bit or 64-bit)
CPU
Dual Core 2 GHz
RAM
2 GB
Available Hard Drive Space
121 MB
Monitor Resolution
1440 x 960
Connectivity
USB 2.0
Ethernet (requires DHCP)
5. Unpacking
5.1 Packing List
The standard items included with the Ossila LED Measurement System are:
•The Ossila LED Measurement System.
•24 VDC power adaptor.
•USB-B cable.
•USB memory stick pre-loaded with the user manual, USB drivers, QC data, and software
installer.
•Resistor test device.
5.2 Damage Inspection
Examine the components for evidence of shipping damage. If damage has occurred, please
contact Ossila directly for further action. The shipping packaging will come with a shock indicator
to show if there has been any mishandling of the package during transportation.

LED Measurement System User Manual
Ossila.com 9 Ossila Limited © 2022
6. Specifications
The Ossila LED Measurement System specifications are shown in Table 6.1.
Table 6.1. Ossila LED Measurement System specifications.
Voltage range
±10 mV to ±10 V
Voltage accuracy
±10 mV offset
Voltage resolution
170 μV
Current range
±10 nA to ±200 mA (5 ranges)
Current accuracy
±10 nA (at 20 μA range)
Current resolution
0.1 nA (at 20 μA range)
Lux range
0 to 100 klx (3 ranges)
Lux accuracy
±10%
Lux resolution
0.0144 (at 500 lx range)
Substrate Size
20 mm x 15 mm
25 mm x 25 mm
Substrate Compatibility
T2005B –S211
T2005E –S2006
Overall Dimensions
Width: 151 mm
Height: 50 mm
Depth: 300 mm

LED Measurement System User Manual
Ossila.com 10 Ossila Limited © 2022
7. System Components
The Ossila LED Measurement System is comprised of three items: the Ossila LED Measurement
System (Figure 7.1), and the Ossila LED IVL Software (Figure 7.2).
Figure 7.1. The Ossila LED Measurement System.
Figure 7.2. The Ossila LED IVL software.

LED Measurement System User Manual
Ossila.com 11 Ossila Limited © 2022
8. Installation
1. Install the Ossila LED IVL software on your PC.
I. Run the file ‘Ossila-LED-IVL-Installer-X-X-X-X.exe’ on the USB memory stick
provided.
II. Follow the on-screen instructions to install the software.
2. Connect the 24 VDC power adaptor to the power socket on the rear of the unit.
3. Connect the unit to your PC using the provided USB-B cable, or an Ethernet cable if
preferred.
I. If the unit is not detected, or driver installation fails, please refer to the SMU USB
Driver Installation Guide found on the USB memory stick.
9. Operation
9.1 Measurement Types
The Ossila LED IVL software can perform 2 different types of measurements. Each measurement
type can be selected using the tabs at the top of the window. The available measurements are:
1. Characterisation (Section 9.1.1).
2. Lifetime (Section 9.1.2).
Each measurement type requires several settings to be selected before it can be performed.
Settings that are shared between all measurements are detailed in Section 9.3. Measurement-
specific settings are detailed in Sections 0, and 9.3.4.
Note: The Ossila LED IVL software and Source Measure Unit USB drivers can also be
downloaded from ossila.com/pages/software-drivers

LED Measurement System User Manual
Ossila.com 12 Ossila Limited © 2022
9.1.1 Characterisation
Figure 9.1. Ossila LED IVL software: Characterisation tab.
The Characterisation tab is used to perform I-V measurements of LEDs, whilst measuring the
illuminance, luminance, white count, and current and power efficiencies using the built-in light
sensors.
9.1.2 Lifetime
Figure 9.2. Ossila LED IVL software: Lifetime tab.

LED Measurement System User Manual
Ossila.com 13 Ossila Limited © 2022
The Lifetime tab is used to perform long-term measurements of LEDs by holding them at a
specified voltage and periodically measuring the current of the LED and response of the light
sensors.
9.2 Quick Start Guide
1. Start the Ossila LED IVL software. The window shown in Figure 9.1 will open.
2. Choose a measurement type as described in Section 9.1.
3. Place your device in the device holder and close the lid.
4. Set the appropriate settings in the software (explained in more detail in Section 9.3).
5. Click the ‘Measure’ button.
I. For each pixel, measurements are performed using the chosen measurement
settings.
II. Data is plotted as it is measured, using a solid line for primary (left) y-axis and a
dashed line for the secondary (right) y-axis.
III. This process is repeated until all pixels have been measured.
6. If automatic saving is turned on, the measurement data and settings will then be saved.
9.3 Software Settings
There are several settings in the program which must be filled in before taking a measurement.
These are found in the column on the left of the window, as shown in Figure 9.1.
9.3.1 System Settings
Figure 9.3. System settings.
(I) System Address
•Select the COM port or IP address of the connected unit you intend to use (USB and
Ethernet connection respectively).
I. This box will be populated automatically with the addresses of any units connected
to the computer or network.
(II) Current Range
•Select the range of current values to be used for the measurement.

LED Measurement System User Manual
Ossila.com 14 Ossila Limited © 2022
I. This defines the upper limit and accuracy of current measurements that can be
performed by the unit. The values for each range are given in Table 9.1.
Table 9.1. Current range specifications of the Ossila LED Measurement System.
Maximum Current
Accuracy
Precision
Resolution
±200 mA
±500 μA
10 μA
1 μA
±20 mA
±10 μA
1 μA
100 nA
±2000 μA
±1 µA
100 nA
10 nA
±200 μA
±100 nA
10 nA
1 nA
±20 μA
±10 nA
1 nA
100 pA
(III) Lux Range
•Select the range of lux values to be used for the measurement.
I. This defines the upper limit and resolution of lux measurements that can be
performed by the unit. The values for each range are given in Table 9.2.
Table 9.2. Lux range specifications for the Ossila LED Measurement System.
Maximum Lux
Accuracy
Resolution
100 klx
±10%
1.8432 lx
5000 lx
±10%
0.1152 lx
500 lx
±10%
0.0144 lx
(IV) Sampling Rate
•Select the number of samples to be taken for each data point.
I. A higher number of samples per point will improve the accuracy and precision of
the measurement. However, this will increase the time taken for the measurement
to be performed.

LED Measurement System User Manual
Ossila.com 15 Ossila Limited © 2022
9.3.2 Device Settings
Figure 9.4. Device settings.
(I) Pixels to Measure
•Select which pixels to measure.
I. Pixel numbers are labelled on the device holder.
II. Selection boxes will be enabled and disabled based upon the device holder being
used.
(II) Pixel Area
•Set the area in cm2of each pixel of the device.
(III) Inverted Device
•Set whether the device to be measured is inverted.
I. This option should be on if the anode of your device connects to the ‘cathode’ pins
in the device holder.

LED Measurement System User Manual
Ossila.com 16 Ossila Limited © 2022
9.3.3 Characterisation Settings
Figure 9.5. Characterisation settings.
(I) Measure Luminance
•Set whether measurements of the device’s light output will be performed.
I. If set to ‘Off’, the system will not check that the lid is closed before measuring.
(II) Start Voltage
•Set the voltage in volts at which to start the current-voltage measurement.
I. This can be set between -10 V and +10 V.
(III) End Voltage
•Set the voltage in volts at which to end the current-voltage measurement.
I. This can be set between -10 V and +10 V.
(IV) Voltage Increment
•Set the step size in volts for changing the voltage during current-voltage measurement.
(V) Voltage Settle Time
•Set the time in seconds between applying a voltage and measuring the current.
I. The minimum value is dependant on the selected lux range: 0 s for 100 klx, 0.05 s
for 5000 lx, and 0.4 s for 500 lx.
(VI) Hysteresis I-V
•This option performs a reverse current-voltage measurement after the forward current-
voltage measurement has completed.
I. This reverses the set start and end voltages and uses the same voltage increment
and settle time as the forward measurement.

LED Measurement System User Manual
Ossila.com 17 Ossila Limited © 2022
9.3.4 Lifetime Settings
Figure 9.6. Lifetime settings.
(I) Duration
•Set the total duration in hours for the lifetime measurement.
(II) Interval
•Set the time interval in minutes between performing repeat measurements of the device.
(III) Hold Voltage
•Set the voltage that all pixels will be held at between measurements.
I. This can be set between -10 V and +10 V.
(IV) Primary Axis Units
•Set which property is plotted on the primary (left) y-axis.
(V) Secondary Axis Units
•Set which property is plotted on the secondary (right) y-axis.
9.3.5 Saving and Loading Settings
Figure 9.7. Controls for saving and loading settings profiles.
(I) Save Settings
•Saves the current settings as a profile that can be loaded quickly for use at another time.
•When clicked, you will be prompted to name the settings profile.

LED Measurement System User Manual
Ossila.com 18 Ossila Limited © 2022
I. If the name is already in use, you will be asked if you wish to overwrite the previous
profile.
II. The name cannot contain the characters: \ / : * ? “ < > |
•The settings profile will be added to the drop-down box using the given profile name.
(II) Settings Profiles
•Select a saved settings profile from the drop-down box.
I. The settings fields will be populated with the saved values from the selected
profile.
•Settings profiles can be deleted by selecting the profile and then clicking the red ‘delete’
icon next to the drop-down box.
9.3.6 Measurement Controls
Figure 9.8. Controls to start and stop the measurement.
(I) Measure
•Clicking this button will start the measurement using the chosen settings.
•This button cannot be clicked if the software has not detected a unit
(II) Abort
•Stops a measurement that is currently in progress.
9.3.7 Plot Controls
(I) Plot Display Controls
By default, the axes of the plot will automatically scale to display all the data within it. The view can
be controlled manually using the following mouse controls:
•Left/Middle click and drag –pan the axes.
•Right click and drag –scale the axes (left-right for x-axis, up-down for y-axis).
•Scroll wheel –scale the axes centred on the cursor location.
A specific axis can be controlled by using these controls on the axis labels. The axes can be reset
by clicking the “Reset View” button shown in Figure 9.9.

LED Measurement System User Manual
Ossila.com 19 Ossila Limited © 2022
(II) Axis Selection
In the characterisation tab the data plotted on the primary and secondary y-axes can be selected
using the drop-down boxes beneath the axes. Axes cannot be changed whilst a measurement is
being performed.
Figure 9.9. Controls for the plot.
(III) Show Primary Axis
•Controls whether the data plotted on the primary (left) y-axis is displayed.
(IV) Show Secondary Axis
•Controls whether the data plotted on the secondary (right) y-axis is displayed.
9.3.8 Saving Data
Figure 9.10.Settings and controls for saving data.
(I) Save After Measurement
•The program allows for data to be saved automatically, as well as manually once the
measurement is complete.
I. For automatic saving, the ‘Save Directory’ and ‘Device Label’ fields must be filled in
before the measurement can start, these are detailed below.
Warning: Automatic saving can be turned off for lifetime measurements. However, manual
saving is unavailable for lifetime measurements, so you will not be able to save your data if it
is turned off.