Introduction
5
1 INTRODUCTION
LED-Panel is the ideal measurement device to determine shutter and shooting time lag,
autofocus time, burst frame rate, exposure times and the rolling shutter speed of digital imaging
devices.
Extremely precise measurements with accuracy better than one millisecond are possible with
this device. It meets all the requirements of the ISO 15781 standard, which describes the
measurement of shooting time lag, shutter release time lag, shooting rate and start-up time.
The LED-Panel has an interface which can be controlled from a computer. Using a standard
USB port, the different operation modes of the LED-Panel can be selected. Shutter and
shooting time lag through adjusting the LED frequency can be activated as well as the display
refresh mode and the continuous mode for exposure time and frame rate measurements.
Of course the rolling shutter mode with its 10 LED rows moving simultaneously can also be
selected through the command line interface. When connected via USB, the maximum speed is
already suitable for most applications at 5 kHz (200 μs). If you deactivate the USB connection
and control the LED-Panel directly at the front panel, you can go up to 50 kHz operation.
Therefore, you have the choice of whether to operate the device in USB or non-USB mode. Via
USB each mode can be triggered individually and the direction of the LED sequence can be
changed.
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 to any future user.
1.1 Intended use
LED-Panel V4 is designed to perform timing measurements on digital cameras. With iQ-LED-
Panel V4 measurements according to ISO 15739 can beperformed.
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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 device has a maximum error < 0.06%.
•
An accuracy of better than one millisecond enables extremely precise measurements.
•
When controlling LED-Panel over USB interface the maximum speed is limited to 200
μs (5 kHz) due to controller limitations.
•
Software based analysis included in LED-Panel software is only available for LED-
Panel V4.
