Image Engineering LG4 User manual

Image Engineering GmbH & Co. KG · Im Gleisdreieck 5 · 50169 Kerpen · Germany
T [phone] · F [phone] · www.image-engineering.com
LG4
User Manual
October 2, 2018

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CONTENT
1INTRODUCTION......................................................................................................... 3
1.1 Conformity ............................................................................................................ 3
1.2 Intended use......................................................................................................... 3
1.3 General safety information..................................................................................... 3
1.3.1 Eye safety...................................................................................................... 3
2GETTING STARTED................................................................................................... 4
2.1 Scope of delivery................................................................................................... 4
2.2 Commissioning...................................................................................................... 4
3OPERATING INSTRUCTIONS HARDWARE ............................................................... 4
3.1 Overview............................................................................................................... 4
3.2 Connecting the hardware....................................................................................... 5
3.2.1 CAN connection.............................................................................................. 5
3.3 Starting the system................................................................................................ 6
3.3.1 Power modes ................................................................................................. 6
3.3.2 PWM (Pulse Width Modulation)....................................................................... 6
3.3.3 Setting the illumination level............................................................................ 7
3.3.4 Warm-up time................................................................................................. 7
4ADDITIONAL INFORMATION..................................................................................... 7
4.1 Maintenance ......................................................................................................... 7
4.2 Storage and transport............................................................................................ 8
4.3 Disposal instructions.............................................................................................. 8
5TECHNICAL DATA SHEET......................................................................................... 8

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1 INTRODUCTION
Important information: Read the manual carefully before using the device.
Inappropriate utilization may cause damage to the device, to the DUT (device under test), and/or other
components of your setup.
Keep these instructions in a safe place and pass them on to any future user.
1.1 Conformity
We, Image Engineering GmbH & Co. KG, hereby declare that the LG4 corresponds to the essential
requirements of the following EC directive:
•Electromagnetic Compatibility - 2014/30/EU
•Photobiological safety of lamps and lamp systems - IEC 62471:2009
1.2 Intended use
The LG4 is a high intensity illuminator for transparent charts based on LED technology. The device
can be controlled over the integrated rotary knob and over the LG Software.
•Only suitable for indoor use.
•Place your system in a dry and constant tempered environment without any interfering
light.
•The optimal ambient temperature range is 22 to 26 degrees Celsius. The maximum
ambient temperature range is 18 to 28 degrees Celsius.
•The system has an internal temperature management system, if there is any error
regarding the internal temperature the system automatically turns off to avoid any
damage.
1.3 General safety information
Do not open the device without any instructions from the Image Engineering support team or when
connected to the power supply.
1.3.1 Eye safety
The LEDs used in the LG4 can be classified as belonging to the Exempt Group or Risk Group 1
according to IEC 62471:2009.

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2 GETTING STARTED
2.1 Scope of Delivery
•LG4
•Tripod handle
•Power supply
•USB cable
•Control software
•User manual
•Calibration protocol
Optional equipment:
•LG C++ API.
2.2 Commissioning
Keep all ventilation slits of the LG4 illumination unit free of foreign objects. The minimum clearance is
15 cm.
3 OPERATING INSTRUCTIONS HARDWARE
3.1 Overview
1. Hardware Overview
A. Handle

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B. Multifunctional rotary/push knob
C. Diffuser
D. Chartholder
E. Tripod support adjustment
F. Tripod support
G. Connection ports
H. Tripod connection
I. Ventilation grill
2. I/O Interface
J. Main power switch
K. USB 2.0 Type B
L. CAN in
M. CAN out
N. 24 V DC
3.2 Connecting the hardware
Connect the original 24 V DC power supply to the power socket (N) of the LG4. Never use a third-
party power supply.
3.2.1 CAN connection
If you have more than one LG4 and want to connect them over CAN (Controlled Area Network), select
the master LG4 and connect it to your PC.

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3.3 Starting the system
The powerswitch (F) is located on the upper side of the control unit.
3.3.1 Power modes
The LG4 provides two intensity modes for the illumination
•NORM: 32 kHz PWM, variable duty cycle
•LOW: 32 kHz PWM, variable duty cycle approximately 1/10 of the NORM Mode power
output
Switch between the power modes by pushing and holding the rotary knob (B)
3.3.2 PWM (Pulse Width Modulation)
The LG4 uses pulse width modulation (PWM) to control illumination levels. The high frequency of 32
kHz allows a flicker-free image acquisition for most cameras. The constant current has the benefit of a
constant correlated color temperature.
LED intensity over time at 32 kHz pulse width modulation with 50% duty cycle
0 0,01 0,02 0,03 0,04 0,05 0,06 0,07 0,08 0,09 0,1
Relative Intensity
Time [ms]
Puls Width Modulation with 32 kHz (simplified
representation)
Relative Intensity Period Time_on Time_off

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3.3.3 Setting the illumination level
Push and release the multifunctional rotary knob (B) to turn the illumination on and off. Turn (B) to set
the illumination level. Push and hold (B) to switch between the LOW and NORM power modes.
3.3.4 Warm-up time
The intensity of continuous illumination in the LOW and NORM modes is not actively stabilized. The
efficiency of LEDs correlates to their temperature. Depending on the selected illumination level and
stability of the ambient temperature, the LG4 regularly reaches a stable temperature after up to 10
minutes. The Illumination level will not fluctuate at a constant temperature.
4 ADDITIONAL INFORMATION
4.1 Maintenance
•Do not touch, scratch, or pollute the diffuser.
•If there is any dust on the diffuser, clean it with compressed air or an air blower.
0
5
10
15
20
25
30
35
060 120 180 240 300 360 420 480 540 600
90%
92%
94%
96%
98%
100%
102%
Temperature [°C]
Time [minutes]
RElative Intensity
Representative Warm Up
Relative Intensity PCB Temperature

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4.2 Storage and Transport
Store and transport the LG4 only in a suitable package, providing sufficient protection to the device.
The LG3 flight case fits the LG4 and can be ordered from Image Engineering.
4.3 Disposal Instructions
The LG4 must be adequately disposed of after the service life is over. Electrical and electromechanical
components are included in LG4. Observe your national regulations and ensure that third parties
cannot use LG4 after disposing of it.
Contact Image Engineering if assistance for disposal is required.
5 TECHNICAL DATA SHEET
See annex for the technical data sheet. It can also be downloaded from the website of Image
Engineering: https://image-engineering.de/support/downloads.