Introduction - IAI SP-20000C-USB User Manual

SP-20000M-USB / SP-20000C-USB

Introduction

EMVA 1288
With regard to signal to noise ratio in this manual, specifications measured by EMVA 1288 are used
together with specifications by a traditional measurement method.
EMVA 1288 is a more complete measurement that considers multiple noise sources, including random
noise, pattern noise, and shading. Additionally, EMVA 1288 incorporates temporal variances in pixel
output by capturing 100 frames of data and computing the RMS variations over the captured frames.
Because of the comprehensive nature of the noise analysis and the additional consideration for RMS
variances over time, EMVA 1288 SNR measurements are inherently lower than the traditional SNR
measurements given by manufacturers. However, the comprehensive nature combined with rigid test
parameters, means that all manufacturers' are measuring their products equally and EMVA 1288 tested
parameters can be compared among different manufacturers' products.
In order to learn more about EMVA 1288, please visit http://www.emva.org
Interface
The SP-20000-USB employs a USB 3.0 interface and is in the process of being certified for compliance
with the USB3 Vision standard. USB3 Vision is a new standard interface for machine vision applications
being developed and managed by the AIA (Automated Imaging Association). USB3 Vision uses USB 3.0
ports that will soon be standard on most PCs (with Windows 7 service pack and Windows 8 native support
expected soon). Components from different manufacturers will easily communicate with each other.
TM
USB3 Vision also supports the GenICam standard which is managed by the EMVA (European Machine
Vision Association). The purpose of the GenICam standard is to provide a common program interface for
various machine vision cameras. By using GenICam, cameras from different manufacturers can
seamlessly connect in one platform.
The maximum transfer speed of USB 3.0 is specified at 5.0 Gbps, however effective bandwidth is reduced
by a number of factors including pixel format conversions and the physical interface components used.
The USB3 Vision standard specifies a bandwidth of 2.8 Gbps or greater. Maximum cable length for passive
cables is five meters, but this can be made longer using active cables.
As for the USB connector, SP-20000-USB uses a Micro B connector which complies with USB3.0. This
connector has an additional 5-pin plug "stacked" on the side of a standard USB 2.0 Micro B connector.
However, USB 2.0 cannot be used with the SP-20000-USB.
Power supply
Although the USB 3.0 interface is capable of supporting both data and power, the power supplied through
the interface is not sufficient to operate the camera. A separate power supply unit must be connected to
the 12-pin connector.
Computer used for SP-20000-USB series
It is necessary to use a PC equippped with a USB 3.0 interface. It is also recommended to use a PC
equipped with slots of better than PC Express 2.0 x 8. Please note that the SP-20000-USB may not work
properly depending on the chipset used in the PC.
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