Jadak PHOTO RESEARCH A-TAKT V-7HS User manual

A-TAKT V-7HS
User Manual
PHOTO RESEARCH INC.
7279 William Barry Blvd.
North Syracuse, NY 13212-3349
Phone: (315) 701 --0678
FAX: [phone]
Email: [e-mail]
URL: www.photoresearch.com

Notice
The information contained in this document is subject to change without notice. If there are any
questions pertaining to the use of this system, contact JADAK.
Jadak and Novanta shall not be liable for errors contained herein or for incidental consequential
damages in connection with the furnishing, performance, or use of this system.
This document contains proprietary information that is protected by copyright. All rights are
reserved worldwide. No part of this document may be reproduced photographically, electronically
or by any other means without the express written permission from Novanta.
© 2019 Novanta. All rights reserved worldwide.
PR is a registered trademark of JADAK
PHOTO RESEARCH, Inc. is a registered trademark of Novanta
Pritchard is a registered trademark of Novanta.
Automatic Adaptive Sensitivity is a registered trademark of Novanta
Windows is a registered trademark of Microsoft.

Customer Support
PHOTO RESEARCH, Inc. has support services available to users in case of problems using the
A-TAKT V-7HS.
PHOTO RESEARCH, Inc. personnel are available from 8:00 AM to 5:00 PM (Eastern Time)
Monday through Friday, except legal holidays, to aid in technical support.
Call [phone], FAX: [phone] or e-mail:
[e-mail] for instrument repair or calibration
[e-mail] for technical support.
If calling, please have the following information ready:
•Instrument Model
•Instrument Serial Number
•This manual
•Any printed data you feel might aid in resolving the problem - such as test data.

A-TAKT V-7HS User’s Manual
i
Table of Contents
Chapter - 1 Introduction.............................................................................................................. 6
Standard Equipment........................................................................................................... 6
Chapter - 2 System overview...................................................................................................... 8
RS232 Connector ........................................................................................................................ 8
Mini USB 1.1 Connector..................................................................................................... 9
Power Connector................................................................................................................ 9
Connecting the AC Adapter......................................................................................................... 9
MS-75 Standard Objective Lens................................................................................................ 10
Installing and / Removing the Standard Lens................................................................... 10
Removing the Objective Lens........................................................................................... 11
Installing the Objective Lens............................................................................................. 11
Chapter - 3 Theory of Operation............................................................................................... 12
Chapter - 4 Basic Setup Procedures ........................................................................................ 17
Introduction ................................................................................................................................ 17
Power-up .......................................................................................................................... 17
Connectivity...................................................................................................................... 17
USB.................................................................................................................................... 17
RS232................................................................................................................................ 17
CCD Viewing Camera........................................................................................................ 17
Target Alignment and Focus ............................................................................................. 17
Chapter - 5 Software................................................................................................................. 18
CD Folder Descriptions.............................................................................................................. 18
Firmware Updater............................................................................................................. 18
PRICameraViewer............................................................................................................ 18
USB Driver........................................................................................................................ 18
WindowsSDK.................................................................................................................... 18
SDK Folder Content Descriptions ............................................................................... 19
cppClient............................................................................................................................ 19
PR6xxComm...................................................................................................................... 19
PR6xxCommClient ............................................................................................................ 19
Updating the Firmware............................................................................................................... 20
Installing the Updater........................................................................................................ 20
Running the Installer......................................................................................................... 20
A-TAKT Camera Viewer ............................................................................................................ 22
Installing the Camera Viewer Software ............................................................................ 22

A-TAKT V-7HS User’s Manual
ii
Installing the camera Viewer ............................................................................................ 22
Running the Camera Viewer ............................................................................................ 22
Adjusting the Image........................................................................................................... 23
Focusing the Image........................................................................................................... 24
Installing the USB Driver............................................................................................................ 24
Determining the COM: Port .............................................................................................. 25
Software Development Kit (SDK).................................................................................................. 26
Class Documentation................................................................................................................. 26
PR6xxComm.CommBase Class Reference..................................................................... 26
Public Types..................................................................................................................... 26
enum UnitsType { .............................................................................................................. 26
enum SpeedMode { ........................................................................................................... 26
enum DriverErrorCodes { .................................................................................................. 26
enum TaktLearnPhases { .................................................................................................. 26
enum SynchMode {............................................................................................................ 26
Public Member Functions................................................................................................. 27
string prVersionInfo ()........................................................................................................ 27
int prOpenLogFile (String FilePath)................................................................................... 27
int prDeviceOpen ()............................................................................................................ 27
void prDeviceClose () ........................................................................................................ 27
Int32 prDeviceModel (ref string szModel).......................................................................... 27
Int32 prDeviceInstCalDue (ref string szDueDate) ............................................................. 27
Int32 prDeviceSerialNumber (ref string szSerialNumber)................................................. 27
Int32 prDeviceFirmwareVersion (ref string szFirmwareVersion)....................................... 27
Int32 prDeviceUnits (UnitsType units)............................................................................... 27
Int32 prDeviceSpeed (SpeedMode mode)........................................................................ 27
Int32 prDeviceObserver (int dataSet)................................................................................ 27
Int32 prDeviceExposure (int mSecs)................................................................................. 27
Int32 prDeviceSmartDark (bool bTurnOn)......................................................................... 27
Int32 prDeviceMeasure (ref double brightness, ref double cieX, ref double cieY)............ 27
Int32 prDeviceLastMeasurementInfo (ref Int32 pixel, ref Int32 lightDark, ref double
exposure, ref double brightness, ref Int32 cct, ref double temperature) ........................... 27
Int32 prDeviceSpectralMeasure (ref string spectralData) ................................................. 28
Int32 prDeviceGetTakt (ref int Takt1, ref int Takt2, ref int Takt3, ref int Takt4)................. 28
Int32 prDeviceTaktTable (int Takt1, int Takt2, int Takt3, int Takt4) .................................. 28
Int32 prDeviceTaktIndex (int index)................................................................................... 28

A-TAKT V-7HS User’s Manual
iii
Int32 prDeviceUserCorrelationTable (string table, ref double brightness, ref double cieX,
ref double cieY).................................................................................................................. 28
Int32 prDeviceEnableCorrelationTable (bool bTurnOn).................................................... 28
Int32 prDeviceStartCamera (string viewerPath)................................................................ 28
Int32 prDeviceStopCamera ()............................................................................................ 28
int prUpdateFirmware (string FWFile) ............................................................................... 28
Int32 prDeviceGetMinExposure (ref Int32 minExposure).................................................. 28
Int32 prDeviceGetFrequency (ref Int16 synchFrequency) ................................................ 28
Int32 prDeviceSetFrequency (Int16 synchFrequency)...................................................... 28
Int32 prDeviceSetSynchMode (SynchMode synchMode)................................................. 28
Int32 prDeviceLearnFreqAdjustedTakt (TaktLearnPhases learnPhase, int frequency).... 28
Detailed Description................................................................................................................... 29
Member Enumeration Documentation.............................................................................. 29
enum PR6xxComm.CommBase.DriverErrorCodes .......................................................... 29
enum PR6xxComm.CommBase.SpeedMode................................................................... 29
enum PR6xxComm.CommBase.SynchMode ................................................................... 29
enum PR6xxComm.CommBase.TaktLearnPhases .......................................................... 30
enum PR6xxComm.CommBase.UnitsType ...................................................................... 30
Member Function Documentation .................................................................................... 30
void PR6xxComm.CommBase.prDeviceClose ().............................................................. 30
Int32 PR6xxComm.CommBase.prDeviceEnableCorrelationTable (bool bTurnOn).......... 30
Int32 PR6xxComm.CommBase.prDeviceExposure (int mSecs)....................................... 31
Int32 PR6xxComm.CommBase.prDeviceFirmwareVersion (ref string szFirmwareVersion)
........................................................................................................................................... 31
Int32 PR6xxComm.CommBase.prDeviceGetFrequency (ref Int16 synchFrequency)...... 31
Int32 PR6xxComm.CommBase.prDeviceGetMinExposure (ref Int32 minExposure) ....... 31
Int32 PR6xxComm.CommBase.prDeviceGetTakt (ref int Takt1, ref int Takt2, ref int Takt3,
ref int Takt4)....................................................................................................................... 32
Int32 PR6xxComm.CommBase.prDeviceInstCalDue (ref string szDueDate)................... 32
Int32 PR6xxComm.CommBase.prDeviceLastMeasurementInfo (ref Int32 pixel, ref Int32
lightDark, ref double exposure, ref double brightness, ref Int32 cct, ref double
temperature) ...................................................................................................................... 32
Int32 PR6xxComm.CommBase.prDeviceLearnFreqAdjustedTakt (TaktLearnPhases
learnPhase, int frequency)................................................................................................. 33
Int32 PR6xxComm.CommBase.prDeviceMeasure (ref double brightness, ref double cieX,
ref double cieY).................................................................................................................. 33
Int32 PR6xxComm.CommBase.prDeviceModel (ref string szModel) ............................... 33
Int32 PR6xxComm.CommBase.prDeviceObserver (int dataSet)...................................... 33

A-TAKT V-7HS User’s Manual
iv
Int32 PR6xxComm.CommBase.prDeviceSerialNumber (ref string szSerialNumber)....... 34
Int32 PR6xxComm.CommBase.prDeviceSetFrequency (Int16 synchFrequency)............ 34
Int32 PR6xxComm.CommBase.prDeviceSmartDark (bool bTurnOn) .............................. 35
Int32 PR6xxComm.CommBase.prDeviceSpectralMeasure (ref string spectralData)....... 35
Int32 PR6xxComm.CommBase.prDeviceStartCamera (string viewerPath)...................... 35
Int32 PR6xxComm.CommBase.prDeviceStopCamera ().................................................. 36
Int32 PR6xxComm.CommBase.prDeviceTaktIndex (int index)......................................... 36
Int32 PR6xxComm.CommBase.prDeviceTaktTable (int Takt1, int Takt2, int Takt3, int
Takt4)................................................................................................................................. 36
Int32 PR6xxComm.CommBase.prDeviceUnits (UnitsType units)..................................... 36
Int32 PR6xxComm.CommBase.prDeviceUserCorrelationTable (string table, ref double
brightness, ref double cieX, ref double cieY)..................................................................... 37
int PR6xxComm.CommBase.prOpenLogFile (String FilePath)......................................... 37
int PR6xxComm.CommBase.prUpdateFirmware (string FWFile)..................................... 37
string PR6xxComm.CommBase.prVersionInfo ().............................................................. 38
Routine Maintenance..................................................................................................................... 39
Cleaning Lenses / Optical Accessories ..................................................................................... 39
Cleaning Exterior Surfaces ........................................................................................................ 39
Recalibration.............................................................................................................................. 39
Factory Repair ........................................................................................................................... 39
In-Warranty Repair ........................................................................................................... 39
Out-of-Warranty Repair ..................................................................................................... 40
Chapter - 6 - Specifications ...................................................................................................... 41
General Specifications................................................................................................................... 41
A-TAKT V-7HS Sensitivity1, 2 ..................................................................................................... 41
A-TAKT V-7HS Sample Area Coverage 1, 2 ............................................................................... 42

A-TAKT V-7HS User’s Manual
v
Table of Figures
FIGURE 1–A-TAKT V-7HS SIDE VIEW.............................................................................................. 8
FIGURE 2-I/O PANEL ENLARGEMENT ................................................................................................. 8
FIGURE 3-MINI-B USB CONNECTOR.................................................................................................. 9
FIGURE 4-MS-75 OBJECTIVE LENS.................................................................................................. 10
FIGURE 5–SPECTRUM MEASURED BY THE V-7HS............................................................................ 12
FIGURE 6–V-7HS SPECTROMETER................................................................................................ 13
FIGURE 7-V-7HS BLOCK DIAGRAM................................................................................................. 13
FIGURE 8-CIE 1931 TRISTIMULUS FUNCTIONS ................................................................................ 15
FIGURE 9-CD DIRECTORY .............................................................................................................. 18
FIGURE 10 -SDK FOLDER CONTENTS.............................................................................................. 19
FIGURE 11 -MAIN CAMERA VIEWER SCREEN .................................................................................... 23
FIGURE 12 -CAMERA VIEWER CONTROL PANEL................................................................................ 23
FIGURE 13 -A-TKT V-7HS ENVELOPE DRAWING.............................................................................. 43

Chapter 1 - IntroductionPR-730 / PR-735 Users Manual
6
Chapter - 1 INTRODUCTION
The A-TAKT V-7HS is designed for high-speed in-line testing/verification of flat panel displays (FPD). It is
a true spectroradiometer and consists of an objective lens, sampling aperture, diffraction grating, and 512
element, thermoelectrically cooled detector.
Target viewing is accomplished by the built-in, high-resolution full color CCD camera. The camera output
provides an image of the sample under test, in the center of which is a black spot--the sampling aperture.
The black spot is the entrance to the optical system and unambiguously represents the precise area
being sampled.
The V-7HS is supplied with a USB 1.1 and RS232 interface. Control of the V-7HS is by the included
Software Developers Kit (SDK). Please see the SDK section of this manual for full details.
STANDARD EQUIPMENT
The standard A-TAKT V-7HS includes:
oA-TAKT V-7HS Spectroradiometer
oObjective Lens.
oUSB 1.1 Port.
oRS232 Port
o6’ Universal input AC Adapter.
oCD with drivers, Instruction manual and SDK software.
oNIST Traceable Calibration (certified for six months).

Chapter 2 –System Overview
7

Chapter 2 –System Overview
8
Chapter - 2 SYSTEM OVERVIEW
FIGURE 1 –A-TAKT V-7HS SIDE VIEW
FIGURE 2 - I/O PANEL ENLARGEMENT
RS232 CONNECTOR
AC Adaptor
Receptacle
USB
Connector
RS232
Connector
CCD Camera I/F

Chapter 2 –System Overview
9
For applications requiring traditional RS232 communications, the RS232 is available. An RJ-12
connector is available on the V-7HS allowing the user to connect the instrument to the controller RS232
port using the included RJ-12 to DB-9 adapter.

Items Included with the RS232 Interface:
1) RJ-12 Jack on A-TAKT V-7HS.
2) RJ-12 to DB-9 adapter.
3) 6 ft. (1.83 m) RJ-12 cable.
Please contact factory for custom RJ-12 cable lengths.
MINI USB 1.1 CONNECTOR
The A-TAKT is equipped with a Mini-B USB connector, providing remote communication.
Figure 3 - Mini-B USB connector.
POWER CONNECTOR
Connecting the A-TAKT power (AC Adapter) supply:
CONNECTING THE AC ADAPTER
1. Insert the AC power cord into an appropriate AC source.
2. Insert the AC power cord into the AC Adapter body.
3. Insert the small round DC connector located on the opposite end of the adapter into the AC
Adapter receptacle.
To Instrument
To Adapter
To PC

Chapter 2 –System Overview
10
MS-75 STANDARD OBJECTIVE LENS
If your A-TAKT V-7HS was equipped with the MS-75 objective lens, it is a 75mm f/2.8 MacroSpectar®
lens that focuses from 1:4 magnification (at 14” from the target) to infinity. This feature allows the
instrument to be focused at different distances from the sample providing the ability to change the
measured spot size. The further from the sample, the larger the spot size.
Figure 4 - MS-75 objective lens.
INSTALLING AND /REMOVING THE STANDARD LENS
The standard objective lens is installed by aligning the lens thread with the instrument’s lens mount
thread and rotating clockwise while grasping the rubber ring toward the rear of the lens (see Figure 4).
The thread should offer minimum resistance during installation.
Full details including spot size versus working distance for all available lenses for MS-75, please refer to
the table at the end of this manual.
Remove Lens
Focus ring
Install Lens
Grasp here to install or
remove lens.

Chapter 2 –System Overview
11
REMOVING THE OBJECTIVE LENS
1. Grasping the rear rubber ring (see Figure 4) turn the lens counter-clock-wise until the lens
separates from the lens mount.
INSTALLING THE OBJECTIVE LENS
1. Grasping the rear rubber ring (see Figure 4) turn the lens clock-wise until the lens seats on the
lens mount.
Warning: Hand tighten only! Do not over tighten as permanent damage may occur.

Chapter 3 –Theory of Operation
12
Chapter - 3 THEORY OF OPERATION
The A-TAKT V-7HS are true Spectroradiometers. It collects the optical radiation (light) through the
objective lens. The signal then passes through the aperture (hole) in the aperture mirror to the diffraction
grating (see Figure 6). The grating breaks up the light into its component wavelengths much like a prism
turns white light into a rainbow. A broad band source of light such as the sun emits radiation at all
wavelengths throughout the visible spectrum. When the diffraction grating is exposed to this type of light,
it will refract the light at several angles thus creating a dispersed spectrum much like a rainbow. Similarly,
if the grating is exposed to a source such as a laser which emits a nearly monochromatic wavelength of
light, only the wavelength(s) of the laser will be refracted.
FIGURE 5 –SPECTRUM MEASURED BY THE V-7HS
The measurement wavelength range is 380 nanometers (nm) (violet) to 780 nm (deep red) –the visible
band of the electromagnetic spectrum (see Figure 5).
The diffracted spectrum is then dispersed onto the detector. The detector is comprised of 512 individual
elements. Thus, each of the detector elements samples a unique color.
During a measurement, the diffracted optical radiation (light) is sampled for a period of time determined
by the Adaptive Sensitivity™ algorithm. Adaptive Sensitivity automatically determines the correct
integration (exposure) time on the detector based on the available signal. Following the light
measurement, a measurement of the dark current of the detector is made for the same length of time that
was used for the light measurement. The dark measurement is then subtracted from the light
measurement yielding the contribution of light for each detector element.
380 nm 500 nm 600 nm 780 nm.

Chapter 3 –Theory of Operation
13
FIGURE 6 –V-7HS SPECTROMETER
FIGURE 7 - V-7HS BLOCK DIAGRAM
The uncorrected or ‘raw’ spectrum is corrected using factors established during the factory calibration of
the instrument. These factors include wavelength accuracy correction, spectral distribution correction,
and photometric correction. The wavelength calibration is performed using a helium spectral line source.
The line source provides known spectral emission lines that the software uses to map the dispersion of
the grating to the multi-element detector. The helium lines used during the wavelength calibration are
388.6 nm, 447.1 nm, 471.3 nm, 587.6 nm, 667.8 nm, 706.5 nm and 728.13 nm.
Spectrometer
CPU
Input Slit
Incident light
512 detector array
Diffracted light
Diffraction
grating
Objective
lens
Aperture Mirror
Optical
radiation
Camera
Viewer
CONTROLLER

Chapter 3 –Theory of Operation
14

Chapter 3 –Theory of Operation
15
Next, spectral correction factors are established using a continuous source with known intensities at each
wavelength. These factors insure that the proper spectral power distribution (SPD) of the target is
determined following a measurement, and that calculated values such as CIE Chromaticity, based on the
measured spectral quantities, are accurately reported. Lastly, a scaling factor (photometric factor) is
applied ensuring the proper photometric levels such as luminance or illuminance are displayed.
Calculations
The corrected spectral data is then used to calculate CIE photometric and colorimetric values including
luminance, CIE 1931 x, y and 1976 u’, v’ chromaticity coordinates, correlated color temperature in Kelvin
and dominant wavelength. Following are some of the basic calculations used to generate photometric
and colorimetric parameters:
FIGURE 8 - CIE 1931 TRISTIMULUS FUNCTIONS

Chapter 3 –Theory of Operation
16
CIE XYZ Tristimulus and Photometric Values
Once the three Tristimulus values (X, Y, Z) have been derived, useful colorimetric values such as CIE
1931 x, y and CIE 1976 u’, v’ can be calculated by the following formulae:
CIE 1931 x, y
ZYX X
x++
=
ZYX Y
y++
=
CIE 1976 u’, v’
( )
ZYXXu 315/4' ++=
( )
ZYXYv 315/9' ++=
Where:
X, Y, and Z are the three CIE Tristimulus values. X represents
the red component, Y is the green component and Z is the blue
component.
Y also serves as the photometric value –when using the standard
MS-75 lens, Y gives candelas / meter² - the SI unit for luminance.
To find footlamberts (English unit of luminance), multiply cd/m² by
0.2919.
683 is a constant used to convert lumens to watts. There are 683
lumens per watt at 555 nm for photopic (daylight) vision.
S() = the corrected spectral data,
( ) ( ) ( )

ZYX ,,
are the three
CIE Tristimulus functions (curves) and () is the data increment
1.0 for the A-TAK V-7HS.
( ) ( ) ( )

=
780
380
683 XSX
( ) ( ) ( )

=
780
380
683 YSY
( ) ( ) ( )

=
780
380
683 ZSZ