Texas Instruments OPT8241-CDK-EVM Manuale utente

OPT8241 CDK Evaluation Module

Quick Start Guide

Literature Number: SBOU156B

October 2015–Revised February 2017

2SBOU156B–October 2015–Revised February 2017

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Table of Contents

Contents

1 Overview............................................................................................................................. 5

2 CDK Contents...................................................................................................................... 5

3 Safety................................................................................................................................. 7

4 Power Supply ...................................................................................................................... 9

5 Top-Level Specifications Of The EVM..................................................................................... 9

6 System Requirements........................................................................................................... 9

7 Software Setup................................................................................................................... 10

8 Hardware Setup.................................................................................................................. 10

9 Launching the Software ...................................................................................................... 11

10 Basic Troubleshooting........................................................................................................ 12

11 Related Documentation from Texas Instruments.................................................................... 12

12 If You Need Assistance....................................................................................................... 12

Revision History.......................................................................................................................... 12

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SBOU156B–October 2015–Revised February 2017

List of Figures

1 Components of EVM ........................................................................................................ 5

2 Explanatory Label............................................................................................................ 7

3 Manufacturer Label.......................................................................................................... 7

4 Serial Numbers............................................................................................................... 8

5 Certification Label............................................................................................................ 8

6 Hot To Touch................................................................................................................. 8

7 Streaming Enabled......................................................................................................... 11

List of Tables

1 Contents of CDK............................................................................................................. 5

2 EVM Specification ........................................................................................................... 9

3 Laser Illumination Profile.................................................................................................... 9

4 States of Board............................................................................................................. 12

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OPT8241 Evaluation Module

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All other trademarks are the property of their respective owners.

Quick Start Guide

SBOU156B–October 2015–Revised February 2017

OPT8241 Evaluation Module

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Overview

SBOU156B–October 2015–Revised February 2017

OPT8241 Evaluation Module

1 Overview

The OPT8241-CDK-EVM is the official evaluation module for the second-generation 3D Time-of-Flight

(3D-ToF) sensor from Texas Instruments. This document describes the kit contents and the basic setup of

the EVM hardware and software. The EVM showcases the high-performance QVGA resolution 3D Time-

of-Flight sensor OPT8241 with its companion Time-of-Flight Controller OPT9221. Figure 1 highlights the

important components of the EVM.

Figure 1. Components of EVM

2 CDK Contents

Table 1 lists the CDK contents.

Table 1. Contents of CDK

Content Description Number of Pieces

Board Assembly (Sensor Board +

Illumination Board + Tripod Mount) The sensor board houses the sensor and the TFC.

Illumination boards with Lasers and mounted diffusers for IR

illumination 1

USB cable Micro-USB cable for connecting the EVM to the PCM 1

Quick Start Guide This document 1

CDK Contents

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OPT8241 Evaluation Module

Table 1. Contents of CDK (continued)

Content Description Number of Pieces

Third-party brochure Metrilus calibration suite brochure 1

Complies with US FDA performance standards for laser products except for deviations pursuant to Laser

Notice No. 50, dated June 24, 2007.

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Safety

SBOU156B–October 2015–Revised February 2017

OPT8241 Evaluation Module

3 Safety

This Laser Device is designed at Class 1 during normal operation. While the OPT8241-CDK-EVM

development boards meet the Class 1 classification requirements under EN/IEC60825-1 2007, users are

advised to take the necessary safety caution when using the OPT8241-CDK-EVM. First, examine the

board for any damage before the board is powered. Check that the diffusers and diffuser mounts are

properly secured on the laser diodes. If there is any damage, stop operating by removing power from the

CDK immediately. Opening the laser diffuser assembly may lead to hazardous radiation exposure. Any

kind of circuit modification to the board or use of software or firmware other than the recommended EVM

tools and firmware provided by TI may lead to violation of class 1 safety limits. Due to the small size and

unsuitability for labeling, laser safety related labels are included herein, rather than on the product.

WARNING

Use of controls or adjustments or performance of procedures other

than those specified herein may result in hazardous radiation

exposure.

This is a class A product as defined by standard EN 61326-1:2013. This product is not intended to be

used in domestic establishments and also in establishments that are directly connected to a low-voltage

power-supply network that supplies buildings used for domestic purposes. In a domestic environment this

product may cause radio interference in which case the user may be required to take adequate measures.

There is no scheduled maintenance required for the OPT8241-CDK-EVM; any servicing and maintenance

of this EVM shall be performed only by trained Texas Instruments or TI-appointed trained personnel. Any

modification or significant damage to the CDK could potentially cause the CDK to operate outside of the

EN/IEC60825 2007 Class 1 classification limits.

Figure 2. Explanatory Label

For reference and future support, user should keep a record of the revision and serial number by entering

the information in the following location:

Figure 3. Manufacturer Label

Safety

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OPT8241 Evaluation Module

The revision and the serial numbers are located on the boards here:

Figure 4. Serial Numbers

Figure 5. Certification Label

Figure 6. Hot To Touch

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Power Supply

SBOU156B–October 2015–Revised February 2017

OPT8241 Evaluation Module

4 Power Supply

The recommended power adapter is EMSA050300-P5RP-SZ. Note that the recommended power adapter

is not included in the kit. The power adapter must be bought separately or an equivalent adapter should

be used.

External Power Supply Requirements:

• Nom Output Voltage — 5 VDC

• Max Output Current — 3 A

• Efficiency Level — V

NOTE: TI recommends using an external power supply that complies with applicable regional safety

standards such as (by example) UL, CSA, VDE, CCC, PSE, and so forth.

5 Top-Level Specifications Of The EVM

The top-level specifications of the EVM are listed in Table 2.

Table 2. EVM Specification

Item Value (Typical)

External power supply requirements 3 A at 5 V

Pixel resolution 320 × 240

Field of View 87° Diagonal. 74 (H) x 59 (V)

Maximum average optical output power 1.5 W

Connectivity USB 2.0

Operating Conditions 0°C to 40°C (Ambient)

The details of the laser illumination are listed in Table 3.

Table 3. Laser Illumination Profile

Item Value (Typical)

Wavelength 850 nm

Peak Optical Output 10 W

Pulse train width 18 µs–28 ms

Pulse repetition frequency 12-MHz to 80-MHz square wave at 50% duty cycle.

Laser Beam Divergence 80° at 90% power relative to the center

Laser Beam Shape Circular

Transverse Beam Mode Diffused

6 System Requirements

The system requirements are as follows:

1. Microsoft®Windows®7 / Ubuntu 14.04 64 bit PC

2. 2GB RAM

3. Minimum of 500MB free space

Software Setup

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OPT8241 Evaluation Module

7 Software Setup

Implement the following steps to setup the software:

1. Download the software for the appropriate platform from the TI website

here:http://www.ti.com/tool/opt8241-cdk-evm

2. Installation of the software:

• Windows - Install the software by running the downloaded executable.

• Ubuntu – The following dependencies must be installed before installing the Voxel Viewer

software.

– libusb ≥libusb-1.0

– ibudev

3. The default installation directory is “C:\Program Files\Texas Instruments\Voxel Viewer-0.x.y.z” on

Windows. On Ubuntu, the name of the executable is voxelviewer.

8 Hardware Setup

The hardware setup is shown in the following steps:

1. Ensure that the software setup is complete.

2. Verify that the EVM is in a fully-assembled state, as shown in Figure 1.

3. Ensure that the power switch on the board (SW2) is in the off position (to the left).

4. Verify that there is not apparent damage to the EVM and the laser diffuser assembly is in good shape.

This step is important to avoid accidental exposure to hazardous radiation.

5. Connect the recommended power supply.

6. Connect the board to the PC using the micro-USB cable provided.

7. Throw the power switch on the board (SW2) to on position (to the right).

8. Check that the master LED is green and the chipset LED is blue in color.

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