QUAD-4Track User’s Manual Revision 2.
QUAD-4Track User’s Manual Revision 2.1 2 WARRANTY The Gentec-EO QUAD-4TRACK Meter carries a one-year warranty (from date of shipment) against material and/or workmanship defects, when used under normal operating conditions. The warranty does not cover damages related to battery leakage or misuse. Gentec-EO Inc. will repair or replace, at Gentec-EO Inc.’s option, any QUAD-4TRACK that proves to be defective during the warranty period, except in the case of product misuse.
QUAD-4Track User’s Manual Revision 2.1 3 SAFETY INFORMATION Do not use the QUAD-4TRACK if the device or the detector looks damaged, or if you suspect that the QUAD-4TRACK is not operating properly. Appropriate installation must be done for water-cooled and fan-cooled detectors. Refer to the specific instructions for more information. Wait a few minutes before handling the detectors after power is applied.
QUAD-4Track User’s Manual Revision 2.1 4 Contents Introduction ......................................................................................................................... 5 Installing the Software ........................................................................................................ 5 Instrument Hardware .......................................................................................................... 8 Power Source ................................................
QUAD-4Track User’s Manual Revision 2.1 5 Introduction The QUAD-4TRACK is an advanced Beam Position Measurement system. It is used with the Pulse Track Applications Software, which creates a full featured data acquisition system for measuring and displaying laser energy and beam Position. The QUAD-4TRACK is used with compatible Gentec-EO probes, the DPQ-J9, DPQ-J20, DPQ-R9, and DPQ-R20. The J series probes are used for pulsed laser applications, and the R series are used for Radiometric application.
QUAD-4Track User’s Manual Revision 2.1 6 Do not plug the QUAD-4TRACK into your PC yet. Step 1, Installing the Applications Software. 1. Insert the installation CD. The installation will start automatically. If it does not, browse to the setup.exe file on the CD and run it. 2. The Welcome to the QUAD-4TRACK Installation Wizard will open. Select Next. 3. The Select Destination Folder dialog box will open. It is recommended that you leave the destination folder at the default setting. Select Next. 4.
QUAD-4Track User’s Manual Revision 2.1 4. When the Install from CD appears, select Install Software Automatically and press Next. 5.
QUAD-4Track User’s Manual Revision 2.1 8 6. When the Completing prompt appears, select finish. The driver install process will now be repeated for the serial port drivers. If during the driver installation Windows asks for the location of a file, browse to the CD drive and select OK. All the required files are on the install CD. The software installation is now complete. You may now run the application software. The Gentec-EO QUAD-4TRACK instrument is a PC based design.
QUAD-4Track User’s Manual Revision 2.1 9 installed. These drivers are on the disc supplied with the QUAD-4TRACK instrument. The Application Software is written in LabView and uses the NI-VISA software from National Instruments to affect a communication link with the QUAD-4TRACK. The USB cable cannot be unplugged from the QUAD-4TRACK during operation. Analog Out The Analog Output provides an amplified, buffered signal from the probe. A Full Scale Reading will correspond to a 1.
QUAD-4Track User’s Manual Revision 2.1 10 Communications with Host PC The QUAD-4TRACK Instrument communicates with the host PC via a USB port. The device supports full speed USB 2.0. The host P.C must have the QUAD-4TRACK Instrument USB drivers installed. These drivers are installed by the disc supplied with the QUAD-4TRACK Instrument. The Application Software is written in LabView and uses the NI-VISA software from National Instruments to affect a communication link with the QUAD-4TRACK Instrument.
QUAD-4Track User’s Manual Revision 2.1 11 The secondary processor uses the data to set the analog out DAC, and must know where each pulse terminates. The range byte is 0 to 18, with 0 indicating 2 fJ and 18 indicating 2kJ. Ranges are in decades. The period is based on a 135MHz clock, so dividing 135MHz by the period counts will yield the frequency. A full scale reading in any range is 3072 counts. To find the value of the pulse, divide it by 3072 and multiply the result by the range.
QUAD-4Track User’s Manual Revision 2.1 12 Command and Query List VER, Version Query, causes the instrument to return the internal firmware version. IDN, Instrument ID Query, causes the instrument to return the instrument identification. SND, the data send command. This command uses one argument. If the command is sent with a 1, then the data stream is turned on. Sending it with a 0 turns the data stream off and the instrument responds with OK. RNG, the range command.
QUAD-4Track User’s Manual Revision 2.1 13 MAX, the maximum range query, returns the maximum range index that can be requested. If the range command is sent with a index greater than this value, and ERR is returned. MIN, the minimum range query, returns the minimum range index that can be requested. If the range command is sent with a index less than this value, and ERR is returned. MRD, the maximum reading query, returns the maximum value that the instrument can measure.
QUAD-4Track User’s Manual Revision 2.1 14 WVQ, the wavelength response query, returns the sensor wavelength and percent response at the desired index. The instrument stores 40 response points in the sensor EEPROM. Sending the query with arguments from 0 to 39 will return each of the points respectively. The following commands access the EEPROM used in the sensor. They should be used as queries only as they will overwrite the factory values if used as commands.
QUAD-4Track User’s Manual Revision 2.1 The Measurement Display has Controls and Indicators related to instrument usage. It is the main display used while taking data with the QUAD-4TRACK Instrument.
QUAD-4Track User’s Manual Revision 2.1 16 Plot Zoom Use Calibration Auto Set Run Range Sets the instrument to the desired range. Trigger % The trigger level in percent of full scale. If the level is set to 10% and the range is set to 200uJ, then the instrument will trigger at signals greater than 20uJ. The QUAD-4TRACK examines all 4 channels for a trigger event in sequences, so if any of the 4 channels are above the set trigger level, all 4 channels will be measured.
QUAD-4Track User’s Manual Revision 2.1 17 The averaging filter is now full. As each new sample is taken, it will replace the oldest sample and a new average will be computed based on the new data set, that is sample 6 will replace sample 1, the and the new set will be averaged. # of Averages The number of averages to use in the moving average. Show History When this control is ON the red beam position indicator will draw a dashed green line on the graphic display to show were the beam has been.
QUAD-4Track User’s Manual Revision 2.1 18 If the control is OFF, then no correction will be done. Auto Set Calls the Autoset VI. This VI attempts to find the best range and trigger level for the signal being measured. The flow is: 1. Set trigger level to 7% 2. Set Range to top Range. 3. Test for triggering. If no triggers are present, the VI reduces the range to the next lowest and tests for triggering. It repeats this process until the lowest range is reached.
QUAD-4Track User’s Manual Revision 2.1 19 The X position of the beam on the detector surface in millimeters. The units are only visible when the Beam Position has been calibrated. Y (mm) The Y position of the beam on the detector surface in millimeters. The units are only visible when the Beam Position has been calibrated. Pulse Energy The total energy in the beam. This is the sum of each of the energies measured by the quadrants.
QUAD-4Track User’s Manual Revision 2.1 the trigger timer must expire before the LED will go out. Data Stream On Illuminates when the Data stream is on. Note that if the instrument is not triggered, no data will be sent. Wave Comp On Illuminates when Wavelength Compensation is on. Position Calibrated Illuminates when the Beam Position has been calibrated. Pulse Track Plot Graphic plot of the beam position and position history if active.
QUAD-4Track User’s Manual Revision 2.1 21 The Sensor Data Display has Controls and Indicators related to the sensor. The sensor information is read from the sensor memory on program startup. Controls The Controls are: Trigger Source Trigger Polarity Log Data Wavelength (nm) Analog Out Source Trigger Source Selects the Trigger Source, External or Internal. If External is selected, a trigger source must be connected to the External Trigger BNC.
QUAD-4Track User’s Manual Revision 2.1 22 Indicators The Indicators are: Cal Wavelength Wave Comp Detector Size Responsivity % Absorption Plot Port in Use Data File Data Log Interval Current Time Last Data Log Update Time Data Saved Cal Wavelength The wavelength of the laser used to calibrate the sensor. Wave Comp Turns Wavelength Compensation On. The sensor responsivity is wavelength dependent.
QUAD-4Track User’s Manual Revision 2.1 23 Data File The path of the currently open data file. If the indicator is empty, no file is currently open to log data. Data Log Interval Sets the time interval to use when saving data to a file. Do not set this interval to less than 1 second or invalid data may be saved. Current Time The current time. This is used to determine when the data log interval has been reached. Last Data Log Update Time Displays the last data log time stamp.
QUAD-4Track User’s Manual Revision 2.1 24 The Calibration Display has Controls and Indicators related to calibrating the beam position. To use the Beam Position Calibration, first make sure that the instrument is triggered and measuring. Press the Calibrate Beam Position button. The software will request you to place the beam at a series of five positions on the X axis. A measurement will be taken at each position and the resulting data will be used to fit a 7th order polynomial.
QUAD-4Track User’s Manual Revision 2.1 25 correction coefficients. The results of the correction will be displayed to show the accuracy of the corrections. Note that each measurement taken is the average of 16 pulses. This means that the time to finish the calibration is pulse rep rate dependent. The measured data from the instrument is nonlinear in response and is also dependent on the beam shape.
QUAD-4Track User’s Manual Revision 2.1 26 As an example, suppose the Sensor has a diameter of 9mm. The radius will then be 4.5mm, so the algorithm will set this to 4mm. Division by 8 gives 0.5mm. The 9 Set Positions will then be: (-2.0,0) , (-1.5,0) , (-1.0,0) , (-0.5,0) , (0,0) , (0.5,0) , (1.0,0) , (1.5,0) , (2.0,0) Measured Positions The Measured Position by the DPQ-4 for each Set Position used during the calibration. Coefficients The 8 coefficients used in the correction equation.
QUAD-4Track User’s Manual Revision 2.1 27 Trigger Level Setting If internal trigger is used, then the trigger level is set to a value that is less that the lowest expected energy. For example, energies from 1.8mJ to 15mJ are expected. Select the 20mJ range, and set the trigger level to less than 1.8 / 20 x 100 = 9 %. You may have to experiment with the trigger level until the trigger LED illuminates. Trigger Source Setting The trigger source can be set to internal or external.
QUAD-4Track User’s Manual Revision 2.1 28 Data Correction The QUAD-4TRACK system is capable of correcting data for wavelength variation from the calibration values. This correction can be disabled if so desired. Wavelength Correction Wavelength correction is done in the QUAD-4TRACK instrument. When a wavelength different from the calibration value is selected, the internal gains of the instrument are changed to normalize the response of the probe to the calibration wavelength.
QUAD-4Track User’s Manual Revision 2.1 7.8.1 Separation: Paper: Manual and certificate Aluminum: Monitor enclosure. Printed circuit board: inside the monitor. 7.8.2 Dismantling procedure: To open the monitor: Remove all the screws on both sides of the monitor: Remove the PCB by sliding it out of the enclosure.
QUAD-4Track User’s Manual 30 Revision 2.1 DECLARATION OF CONFORMITY Application of Council Directive(s): 2004/108/EC EMC Directive Manufacturer’s Name: Manufacturer’s Address: Gentec Electro Optics, Inc. 445 St-Jean Baptiste, suite 160 (Québec), Canada G2E 5N7 European Representative’s Name: Representative’s Address: Laser Components S.A.S. 45 bis Route des Gardes 92190 Meudon (France) Type of Equipment: Model No.
QUAD-4Track User’s Manual Revision 2.
