Point grey Grasshopper Product manual

Grasshopper®

Technical Reference Manual

Version 1.5

Revised November 26, 2010

Point Grey Research

Inc.

12051 Riverside Way •Richmond, BC •Canada •V6W 1K7 •T(604) 242-9937 •www.ptgrey.com

Point Grey Research Grasshopper Technical Reference Table of Contents

Revised 26-Nov-10

FCC Compliance Information

This equipment has been tested and found tocomply with thelimits for a Class Adigital device,

pursuant toPart 15 of the FCC Rules. Theselimits are designed toprovide reasonable

protection against harmful interference when the equipment is operated in a commercial

environment. This equipment generates, uses, and canradiateradiofrequencyenergy and, if not

installedand usedin accordance with theinstruction manual, maycause harmfulinterference to

radio communications. Operation of this equipment in a residential area is likely to cause harmful

interference in which case the user will berequired to correct the interferenceat his own

expense.

You are cautioned that any changes or modifications not expressly approved in this manual could

void your authority to operate this equipment.

Hardware Warranty

Point Grey Research

Inc. (Point Grey) warrants to the Original Purchaser that the Camera

Module provided with this package is guaranteed to be free from material and manufacturing

defects for a period of two(2) years. Should a unit fail during this period, Point Grey will, at its

option,repair or replace the damaged unit. Repaired or replaced units will be covered forthe

remainderof the originalequipment warrantyperiod. This warranty does not applyto unitsthat,

after being examined by PointGrey, have been found to havefailed due to customer abuse,

mishandling, alteration, improper installation or negligence. If the original camera module is

housed within a case, removing the case for any purpose voids this warranty.

Point Grey Research, Inc. expressly disclaims and excludes all other warranties, express, implied

and statutory, including, but without limitation, warranty of merchantability and fitness for a

particular application or purpose. In no event shall Point Grey Research, Inc. be liable to the

Original Purchaser or any third party for direct, indirect,incidental, consequential, special or

accidental damages, including without limitation damages for business interruption, loss of profits,

revenue, data or bodily injury or death.

WEEE

The symbol indicates that this product may not be treated as household

waste. Please ensure this product is properly disposed as inappropriate

waste handling of this product may cause potential hazards to the

environment and human health. For more detailed information about

recycling of this product, please contact Point Grey Research.

Trademarks

Point Grey Research, PGR, the Point Grey Research, Inc. logo, Chameleon, Digiclops,

Dragonfly, Dragonfly Express, Firefly, Flea, FlyCapture, Gazelle, Grasshopper, Ladybug, and

Triclops are trademarks or registered trademarks of Point Grey Research, Inc. in Canada and

other countries.

Point Grey Research Grasshopper Technical Reference Table of Contents

Revised 26-Nov-10

Table of Contents

Table of Contents.....................................................................................3

List of Figures ..........................................................................................5

List of Tables............................................................................................5

1Introduction......................................................................................6

1.1. Grasshopper Overview...............................................................................6

1.1.1. Image Acquisition...........................................................................6

1.1.2. Image Processing..........................................................................6

1.1.3. Camera and Device Control...........................................................7

1.1.4. Mechanics and Form Factor...........................................................7

1.2. Using This Manual......................................................................................7

1.3. Camera Specifications................................................................................8

1.3.1. Spectral Response.........................................................................9

1.3.2. Common CCD Artifacts................................................................10

1.3.3. Dual Tap Sensor Information........................................................10

1.4. System Requirements...............................................................................10

1.4.1. Laptop / Notebook Considerations ...............................................11

1.4.2. Macintosh and Linux OS Support.................................................11

1.5. Controlling the Camera.............................................................................11

1.5.1. FlyCap Demo Program ................................................................11

1.5.2. Custom Applications Built with the FlyCapture API.......................11

1.5.3. Third-Party Software Applications ................................................11

1.6. Camera Control Command Registers........................................................12

1.7. Handling Precautions and Camera Care...................................................12

1.7.1. Case Temperature and Heat Dissipation......................................12

1.8. Camera Accessories.................................................................................13

2Camera Physical Properties.........................................................14

2.1. Physical Description..................................................................................14

2.2. Camera Dimensions.................................................................................15

2.3. Lens Setup and Compatibility....................................................................15

2.4. Dust Protection.........................................................................................16

2.5. Mounting...................................................................................................16

2.5.1. Using the Case............................................................................16

2.5.2. Using the Tripod Mounting Bracket...............................................16

2.6. Infrared Cut-Off Filters..............................................................................17

3Camera Interface ...........................................................................18

3.1. IEEE-1394b Connector.............................................................................18

3.1.1. Daisy Chaining.............................................................................18

3.2. Cables......................................................................................................19

3.3. Host Adapter Card....................................................................................19

3.4. Camera Power..........................................................................................19

3.5. General Purpose Input/Output (GPIO).......................................................20

Point Grey Research Grasshopper Technical Reference Table of Contents

Revised 26-Nov-10

3.5.1. GPIO Electrical Characteristics....................................................21

3.6. Status Indicator LED.................................................................................21

4Camera Operations and Features................................................22

4.1. General Camera Properties ......................................................................23

4.2. Standard Data Formats, Modes and Frame Rates.....................................23

4.3. Frame Rates and Camera Bandwidth .......................................................25

4.3.1. Maximum Number of Cameras on a Single Bus ...........................25

4.3.2. Exceeding Bandwidth Limitations Using Format_7 with Multiple

Cameras...................................................................................................26

4.3.3. Calculating Maximum Possible Frame Rate .................................26

4.3.4. Dual Packet Mode........................................................................26

4.4. Customizable Data Formats and Modes....................................................27

4.4.1. Calculating Format_7 Frame Rates..............................................34

4.4.2. Subsampling and Binning in Format_7.........................................34

4.5. Image Acquisition .....................................................................................35

4.5.1. Camera Power.............................................................................35

4.5.2. Shutter.........................................................................................35

4.5.3. Gain.............................................................................................36

4.5.4. Auto Exposure.............................................................................36

4.5.5. Extended Shutter Times...............................................................37

4.5.6. Automatic Inter-Camera Synchronization .....................................38

4.5.7. Frame Rate Control .....................................................................38

4.5.8. Pixel Binning and Region of Interest Modes .................................38

4.5.9. Y16 (16-bit Mono) Image Acquisition............................................39

4.5.10. Asynchronous (External) Trigger Modes.....................................39

4.5.11. On-Camera Frame Buffer...........................................................41

4.5.12. High Dynamic Range (HDR) Mode.............................................42

4.6. Image Processing.....................................................................................42

4.6.1. Color and Greyscale Conversion..................................................42

4.6.2. Lookup Table and Gamma...........................................................43

4.6.3. Saturation....................................................................................44

4.6.4. Sharpness ...................................................................................44

4.6.5. White Balance..............................................................................44

4.6.6. Image Flip / Mirror........................................................................45

4.6.7. Test Pattern.................................................................................45

4.6.8. Embedded Image Information......................................................46

4.7. Camera and Device Control......................................................................46

4.7.1. Voltage Sensor............................................................................46

4.7.2. Programmable Strobe Output.......................................................46

4.7.3. RS-232 Serial Port.......................................................................46

4.7.4. Memory Channel Storage of Camera Settings..............................47

4.7.5. User Data Flash...........................................................................47

4.7.6. Camera Upgrades........................................................................47

Appendix A: Spectral Response Curves..............................................48

Appendix B: Memory Channel Registers.............................................54

Appendix C: Glossary............................................................................55

Appendix D: Technical Support Resources.........................................57

Appendix E: Contacting Point Grey Research ....................................58

Point Grey Research Grasshopper Technical Reference List of Figures

Revised 26-Nov-10

Appendix F: Revision History...............................................................59

List of Figures

Figure 1: Dimensional drawing......................................................................................15

Figure 2: IEEE-1394b connector pin configuration.........................................................18

Figure 3: GPIO schematic.............................................................................................20

Figure 4: Grasshopper external trigger timing characteristics.........................................40

Figure 5: Relationship between video mode change and triggering................................41

Figure 6: Test pattern sample image (Mono and YUV formats)......................................45

List of Tables

Table 1: IEEE-1394b connector pin configuration..........................................................19

Table 2: GPIO pin assignments.....................................................................................20

Table 3: Status indicator LED descriptions....................................................................21

Table 4: Supported video formats, modes and frame rates............................................24

Table 5: Supported partial image (Format 7) video formats and modes for GRAS-03K2C

.............................................................................................................................28

Table 6: Supported partial image (Format 7) video formats and modes for GRAS-03S3M

.............................................................................................................................29

Table 7: Supported partial image (Format 7) video formats and modes for GRAS-14S3C

.............................................................................................................................30

Table 8: Supported partial image (Format 7) video formats and modes for GRAS-14S5C

.............................................................................................................................31

Table 9: Supported partial image (Format 7) video formats and modes for GRAS-20S4C

.............................................................................................................................32

Table 10: Supported partial image (Format 7) video formats and modes for GRAS-50S5C

.............................................................................................................................34

Table 11: Extended shutter minimum and maximum times............................................37

Point Grey Research Grasshopper Technical Reference Introduction

Revised 26-Nov-10

1 Introduction

1.1. Grasshopper Overview

The Grasshopper digital camera line offers high megapixel resolution and an ultra fast IEEE-

1394b 800Mb/s digital interface. Attractive pricing makes these powerful cameras ideal for OEMs

and system integrators who need compact systems that deliver 1.4M, 2.0M or 5.0M images at

high frame rates. The Grasshopper cameras are particularly effective in demanding imaging

applications such as those used in electronics manufacturing, life sciences and microscopy,

surveillance and security, and ITS.

Users are encouraged to download TAN2007004 from www.ptgrey.com/products/grasshopper for

detailed information on how to transition applications from the Scorpion to the Grasshopper.

Refer to Knowledge Base Article 206 for a complete overview of the features and benefits of the

IEEE-1394b standard.

LAll model-specific information presented in this manual reflects

functionality available in firmware version 0.9.1.48.

To check the camera firmware version, consult our knowledge base:

www.ptgrey.com/support/kb/index.asp?a=4&q=94.

1.1.1. Image Acquisition

Feature Description

IEEE-1394b Bandwidth 800Mb/s interface allows full color RGB output at high data rates

Automatic Synchronization Multiple Grasshoppers on the same 1394b bus automatically sync

Programmable Exposure User-programmable shutter, gain, and black clamp settings via software

Fast Frame Rates Faster standard frame rates plus pixel binning and ROI support

Multiple Trigger Modes Bulb-trigger mode, multiple triggered exposures before readout

Trigger at Full Frame Rate Overlapped trigger input, image acquisition and transfer

1.1.2. Image Processing

Feature Description

Color Conversion On-camera conversion to YUV411, YUV422 and RGB formats

Image Processing On-camera control of sharpness, hue, saturation, gamma, LUT

Image Flip / Mirror Horizontal image flip (mirror image)

Embedded Image Info Pixels contain frame-specific info (e.g. shutter, 1394 cycle time)

Test Pattern Continuous static image for testing and development

Point Grey Research Grasshopper Technical Reference Introduction

Revised 26-Nov-10

1.1.3. Camera and Device Control

Feature Description

Auto White Balance Auto and one-push white balance for easy color balancing

Frame Rate Control Fine-tune frame rates for video conversion (e.g. PAL @ 24 FPS)

Improved Strobe Output Increased drive strength, configurable strobe pattern output

RS-232 Serial Port Provides serial communication via GPIO TTL digital logic levels

Memory Channels Non-volatile storage of camera default power-up settings

Broadcast Properties Apply settings (e.g. shutter, gain) to all cameras on the same bus

Voltage Sensor Monitors sensor voltages to ensure optimal image quality

Camera Upgrades Firmware upgradeable in field via IEEE-1394 interface.

1.1.4. Mechanics and Form Factor

Feature Description

Compact Design 44mm x 29mm x 58mm, 104 grams

Industry Standard Mechanics ASA/ISO-compliant mounting bracket and C-mount lens holder

Jack Screw Connector 1394b cable jack screws provide secure connection

1.2. Using This Manual

This manual attempts to provide the user with a detailed specification of the Grasshopper camera

system. The reader should be aware that the camera system is a complex and dynamic system –

if any errors or omissions are found during experimentation, please contact us.

This document is subject to change without notice.

Many of the operational descriptions included in this manual are intended as general overviews,

and may not present the detailed information required for developing specific applications. For

additional details and operational descriptions, refer to the following resources that can be

downloaded from our website at www.ptgrey.com/support/downloads/:

•Point Grey Digital Camera Register Reference

•FlyCapture User Manual

•TAN2004004: Synchronizing to an external signal using DCAM 1.31 Trigger Mode_0

•TAN2004001: Configuring and testing the RS-232 serial port

•TAN2005002: Setting a GPIO pin to strobe using DCAM 1.31 Strobe Signal Output

•TAN2005003: Setting a GPIO pin to output a strobe signal pulse pattern

•TAN2005004: Buffering a GPIO pin output signal to drive an external device

•TAN2007004: A guide to transitioning from Scorpion®to Grasshopper®

•TAN2007004: Accessing the On-Camera Frame Buffer

Point Grey Research Grasshopper Technical Reference Introduction

Revised 26-Nov-10

1.3. Camera Specifications

Specification 03K2 03S3 14S3 14S5 20S4 50S5

Imaging

Sensor

Kodak® KAI-

0340-

ABB/CBA-CB-

AA-Dual 1/3”

progressive

scan CCD

Sony®

ICX414 1/2”

progressive

scan CCD

Sony® ICX267

1/2”

progressive

scan CCD

Sony®

ICX285 2/3”

progressive

scan CCD

Sony® ICX274

1/1.8”

progressive

scan CCD

Sony® ICX625

2/3”

progressive

scan CCD

Maximum

Resolution 640(H) x 480

(V) 648(H) x

488(V) 1384(H) x

1032(V) 1384(H) x

1036(V) 1624(H) x

1224(V) 2448(H) x

2048(V)

Sensor Pixel

Size 7.4 x 7.4µm 9.9 x 9.9µm 4.65 x 4.65µm 6.45 x

6.45µm 4.4 x 4.4µm 3.45 x 3.45µm

Maximum FPS See sections 4.2 and 4.4 for more information

Digital

Interface Dual bilingual 9-pin IEEE-1394b for camera control, video data transmission and daisy

chaining

Transfer

Rates 100, 200, 400, 800 Mbit/s

A/D Converter Analog Devices 14-bit analog-to-digital converter

Max Pixel

Clock 40 MHz 26 MHz 40 MHz 28 MHz 67 MHz 32 MHz

Video Data

Output 8, 16 and 24-bit digital data (see Supported Data Formats)

Image Data

Formats Y8, Y16 (all models), RGB, YUV411, YUV422, YUV444, 8-bit and 16-bit raw Bayer data

(color models)

Partial Image

Modes Pixel binning and region of interest modes available via Format_7

General

Purpose I/O

8-pin Hirose HR25 general purpose input/output connector

4 pins for external trigger, strobe or serial data / 1 pin +3.3V / 1 VEXT pin to externally

power the camera

Automatic / manual / one-push gain modes

Gain 0dB to 24dB

Automatic / manual / one-push shutter modes

Programmable through software or through input trigger signal

0.01ms to 66.63ms @ 15 FPS

Shutter

Extended shutter modes for exposure times longer than 5 seconds

Image

Processing On-board raw Bayer color interpolation, hue, saturation, sharpness, gamma, programmable

LUT, horizontal image flip, test pattern output

Gamma 0.50 to 4.00

Trigger Modes DCAM v1.31 Trigger Modes 0, 1, 3, 14, and 15

* Signal To

Noise Ratio 56 dB 64 dB 60 dB 65 dB 59 dB 57 dB

* Peak QE

Wavelength 460 nm 500 nm 459 nm 470 nm 460 nm 520 nm

* Peak QE

alue 46 % 45 % 52 % 64 % 60 % 56 %

* Full Well

Depth 19426 e- 31370 e- 9159 e- 16964 e- 13942 e- 6486 e-

* Dark Noise 21.57 e-/s 13.61 e-

s 0.53 e-

s 6.38 e-

s 9.39 e-

s 3.19 e-/s

* Dark Current 187 e-/s 331 e-

s 1.84 e-

s 175 e-

s 122 e-

s 34 e-/s

* Read Noise 84 e- 41 e- 59 e- 33 e- 61 e- 78 e-

* Average 46 °C 37 °C 45 °C 36 °C 42 °C 38 °C

Point Grey Research Grasshopper Technical Reference Introduction

Revised 26-Nov-10

Operating

Temperature

Dimensions 44mm x 29mm x 58mm (excluding lens holder, without optics)

Mass 104 grams (without optics)

Lens Mount C-mount

Camera

Specification IIDC 1394-based Digital Camera Specification v1.31

Voltage

Requirements 8-30V, via IEEE-1394b interface or 8-pin GPIO connector

Power

Requirements

(max) 3.9W 2.9W 3.0W 3.1W 3.4W 3.8W

Emissions

Compliance Complies with CE rules and Part 15 Class A of FCC Rules

Operating

Temperature 0° to 40°C

Storage

Temperature -30° to 60°C

Warranty Two years

Operating

Relative

Humidity

20 to 80% (no condensation)

Storage

Relative

Humidity

20 to 95% (no condensation)

* Measurements taken under the following conditions: Gain: 0 dB; Pixel Format: Format_7 Mode 0; Resolution: Max; Frame Rate: Max;

Shutter: 1 ms;

1.3.1. Spectral Response

LAll color models are equipped with an optical filter that prevents

infrared light from reaching the image sensor. This filter is discussed in

the section on Infrared Cut-Off Filters.

For spectral response curves, see Appendix A: Spectral Response Curves.

Point Grey Research Grasshopper Technical Reference Introduction

Revised 26-Nov-10

1.3.2. Common CCD Artifacts

The following section describes issues typical of CCD sensors and possible solutions.

•Dead / Hot Pixels

It is possible for one or more pixels in the CCD sensor array to stop responding. This will

result in a situation where the pixel will always appear black (dead), or white (hot/stuck).

This is generally not anissue except invery rare cases.

•Bright Pixels

Cosmic rays have the ability to cause images to have artifacts which look like hot pixels

which are randomly distributed throughout the image. This is most apparent when th

camera is running at a high temperature or the gain is set to a high amount. It is

impossible to prevent cosmic rays from reaching theCCD.

•Vertical Smear

When a strong light source is shot on the camera, there may be a vertical smear above

and below the position of the actual light source. This is a byproduct of the interline

transfer system usedto extract data from the CCD.

1.3.3. Dual Tap Sensor Information

The Grasshopper 50S5M/C and 03K2M/C models feature dual tap CCDs. This means that the

CCD has two outputs running simultaneously in order to provide a larger data rate, thus resulting

in a higher frame rate. However, the CCD is generally unable to provide the left and right halves

of the image at an equal intensity. Therefore in order to maintain image quality, the Grasshopper

has been calibrated to correct for imbalances between the left and right halves. However, there

may be situations where the boundary between the left and right halves of the images can be

seen, such as images with high gain values.

1.4. System Requirements

•Processor

Recommended– Intel Pentium®4 2.0 GHz or compatible processor

Minimum – Intel Pentium III 800 MHz or compatible processor

•Memory

Recommended– 2GB

Minimum - 256MB

•AGP video card with 64 MB video memory (128 MB recommended)

•Bus Configuration

Recommended– PCI Express (PCI-e card not included) or 64-bit PCI slot

Minimum – 32-bit standard PCI slot forthe IEEE-1394 card

•Microsoft Windows XP Service Pack 1

•Microsoft Visual C++ 6.0 (to compile and run example code)

Point Grey Research Grasshopper Technical Reference Introduction

Revised 26-Nov-10

1.4.1. Laptop / Notebook Considerations

Some 1394 PCMCIA cards for laptop / notebook computers require a 4-pin cable. A 4-pin cable does no

provide power and will therefore not work with Point Grey cameras, which require a 6-pin connector (the

additional two pins provide power). For suggestions on how to provide power in these circumstances,

consultthe followingknowledge base article:

KB Article 93: www.ptgrey.com/support/kb/index.asp?a=4&q=93

1.4.2. Macintosh and Linux OS Support

Users wishing to operate their Point Grey camera on the Macintosh OS/X or Linux operating

systems should consult the following knowledge base articles:

Macintosh support: www.ptgrey.com/support/kb/index.asp?a=4&q=173

Linux support: www.ptgrey.com/support/kb/index.asp?a=4&q=17

1.5. Controlling the Camera

The Grasshopper can be controlled by the following types of applications:

1.5.1. FlyCap Demo Program

The FlyCap application is a generic streaming image viewer included with the FlyCapture

that can be used to test many of the capabilities of your compatible PGR IEEE-1394 camera. It

allows you to view a live video stream from the camera, save individual images or .avi movi

clips, adjust the various video formats, frame rates, properties and settings of the camera, and

access camera registers. It is an easy-to-use program that can be used to test many of the

capabilities of your PGR IEEE-1394 camera system. Consult the PGR FlyCapture User Manua

for moreinformation.

1.5.2. Custom Applications Built with the FlyCapture API

PGR FlyCapture includes a full Application Programming Interface that allows customers to

create custom applications to control Point Grey Imaging Products. The SDK provides a numbe

of sample programs and source code that is meant to help the advanced programmer get started

using the FlyCapture API. Examples range from simple console programs that demonstrate the

basic functionality of the API, such as PGRFlyCaptureTest, to more complex examples such as

the MFC application FlyCap.

1.5.3. Third-Party Software Applications

The following knowledge base article provides information on Point Grey IEEE-1394 camer

compatibility with third-party software development kits, applications, camera drivers, and

integrated development environments (IDEs):

KB Article 152: www.ptgrey.com/support/kb/index.asp?a=4&q=152

Point Grey Research Grasshopper Technical Reference Introduction

Revised 26-Nov-10

1.6. Camera Control Command Registers

For a complete description of the Camera Control Command Registers implemented on the

camera, please refer to the Point Grey Research Digital Camera Register Reference, included

with theFlyCapture SDK and downloadable from www.ptgrey.com/support/downloads/.

1.7. Handling Precautions and Camera Care

[Do not open the camera housing. Doing so voids the Hardware

Warranty described at the beginning ofthis reference manual.

Your Point Grey digital camera module is a precisely manufactured device and should be handled

withcare. Here are some tips on how tocare for the device.

•Avoid electrostatic charging. Please consult the following knowledge base article for more

details: www.ptgrey.com/support/kb/index.asp?a=4&q=42.

•Users who have purchased a bare board camera should take the following additional

protective measures:

oEither handle bare handed or use non-chargeable gloves, clothes or material.

Also, use conductive shoes.

oInstall a conductive mat on the floor or working table to prevent the generation of

static electricity.

•When handling the camera unit, avoid touching the lenses. Fingerprints will affect the quality

of the image produced by the device.

•To clean the lenses, use a standard camera lens cleaning kit or a clean dry cotton cloth. Do

notapply excessive force.

•To clean the imaging surface of your CCD, follow the steps outlined in

www.ptgrey.com/support/kb/index.asp?a=4&q=66.

•Our cameras are designed for an office environment or laboratory use. Extended exposure

to bright sunlight, rain, dusty environments, etc. may cause problems with the electronics and

theoptics of the system.

•Avoid excessive shaking, dropping orany kind of mishandlingof the device.

1.7.1. Case Temperature and Heat Dissipation

The Grasshopper is an ultra-compact camera. As a result of packing the Grasshopper electronics

into a small space, the outer case of the camera can become very warm to the touch when

running in some high data rate video modes. The case can reach temperatures up to 45°Celsius

under normal operating conditions. This is expected behaviour and will not damage the camera

electronics.

Point Grey Research Grasshopper Technical Reference Introduction

Revised 26-Nov-10

If reducing heat is a concern, users can use a cooling fan to set up a positive air flow around the

camera, taking into consideration the following precautions:

•Mount the camera on a heat sink, such as a camera mounting bracket, made out of a

heat-conductive material like aluminum.

•Make sure the flow of heat from the camera case to the bracket is not blocked by a non-

conductive material like plastic.

•Make sure the camera has enough open space around it to facilitate the free flow of air.

1.8. Camera Accessories

Accessories such as tripod mounts and lens holders are available from PGR – contact our Sales

team at sales@ptgrey.com for additional information. Links to FireWire/IEEE-1394 and digital

camera accessories can be found in the following knowledge base article:

KB Article 131: www.ptgrey.com/support/kb/index.asp?a=4&q=131.

Point Grey Research Grasshopper Technical Reference Camera Physical Properties

Revised 26-Nov-10

2 Camera Physical Properties

2.1. Physical Description

1. Lens holder (C-

mount)

Attach any C-mount

lens or other optical

equipment. Consult

the section Lens

Setup and

Compatibility for full

details.

2. Glass / IR filter

system

Refer to the Dust

Protection and the

Infrared Cut-Off

Filters section for

more information.

3. M3x0.5 mounting

holes

Refer to the

Mounting section for

full details.

4. General Purpose I/O connector

The 8-pin GPIO connector is used for external triggering,

strobe output or digital I/O. Refer to the General Purpose

Input/Output section for more information.

5. Status LED

This light indicates the current state of the Grasshopper

operation. Refer to the section Status Indicator LED.

6. IEEE-1394b connector

7. IEEE-1394b connector

The camera uses standard 9-pin 1394b connectors. M3

screw holes are located on either side of the connectors

for secure connections to the 9-pin locking 1394b cable.

See the IEEE-1394 Connector section for full connector

details.

8. M3x0.5 mounting holes

Refer to the Mounting section for full details.

Point Grey Research Grasshopper Technical Reference Camera Physical Properties

Revised 26-Nov-10

2.2. Camera Dimensions

Figure 1: Dimensional drawing

2.3. Lens Setup and Compatibility

The lens holder is compatible with C-mount lenses. Lenses are not included with individual

cameras. To differentiate between C- and CS-mount lenses, consult the following article:

KB Article 98: www.ptgrey.com/support/kb/index.asp?a=4&q=98

Point Grey Research Grasshopper Technical Reference Camera Physical Properties

Revised 26-Nov-10

2.4. Dust Protection

[Cameras are sealed when they are shipped. To avoid contamination,

seals should not be broken until cameras are ready for assembly at

customer's site.

Do not remove the protective glass. Doing so can void the Hardware

Warranty described at the beginning of this reference manual.

The case is designed to prevent dust from falling directly onto the CCD's protective glass surface.

This is achieved by placing a piece of clear glass (monochrome cameramodels) or IR cut-off filter

(color models) that sits above the surface of the CCD's glass. A removable plastic retainer keeps

this glass/filter system in place. By increasing the distance between the imaging surface and the

location of the potential dust particles, the likelihood of interference from the dust (assuming non-

collimated light) and the possibility ofdamage to the sensor during cleaning is reduced.

2.5. Mounting

2.5.1. Using the Case

The case is equipped with the following mounting holes:

•Two (2) M3x0.5mm mounting holes on the top of the case

•Four (4) M3x0.5mm mounting holes on the bottom of the case that can be used to attach

the camera directly to a custom mount or to the Grasshopper tripod mounting bracket

2.5.2. Using the Tripod Mounting Bracket

The Grasshopper tripod mounting bracket comes with the Development Kit, or can be purchased

separately by contacting sales@ptgrey.com. The bracket is equipped with four (4) M3 mounting

holes.

Point Grey Research Grasshopper Technical Reference Camera Physical Properties

Revised 26-Nov-10

2.6. Infrared Cut-Off Filters

Point Grey Research color camera models are equipped with an additional infrared (IR) cut-off

filter. This filter can reduce sensitivity in the visible spectrum. The properties of this filter are

illustrated in the results below, which were obtained by Point Grey Research independent of

camera model.

In monochrome models, the IR filter is replaced with a transparent piece of glass.

The following are the properties of the IR filter/protective glass

Type Reflective

Material Schott D 263 T or BK7 equivalent for coating filters

Physical Filter Size 14 mm x 14 mm

Glass Thickness 1.0 mm

Dimensional Tolerance +/-0.1 mm`

Coating Filters Scott D 263 T

These properties apply to all imaging cameras except GRAS 14S5.

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