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Calibration

Focus II

System Guide

53

Attenuator Calibration - applicable to calibration of Strain Gage and
Thermocouple modules

The first step is to measure the DC offset of the attenuator Output
channel. A dialog box will appear. The operator should read the DC
measurement from the voltmeter and type the value in the edit box.
Please allow enough time for voltmeter readings to stabilize. Stability
can be assumed if the readings vary less than 2% of the total
measurement reading on all ranges.

DC Measurement for Attenuator Offset Calibration

You will also be requested to measure the RMS value of the Attenuator
signal source and type it into the dialog box.

Note: The voltmeter

should remain in DC measurement mode.

DC Measurement for Attenuator Gain Calibration

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Summary of Contents for Dactron FOCUS II

Page 1: ...nal Analysis System System Guide Rev 3 05 System Installation Maintenance Calibration Troubleshooting LDS Dactron Phone 408 934 9160 Fax 408 934 9161 E mail technical support LDS Dactron spx com Web Site www lds group com ...

Page 2: ...e liable for any incidental or consequential damages including loss of data lost profits cost of cover or other special or indirect damages Your rights under law may vary US Government Restricted Rights The software and documentation are provided with Restricted Rights Use duplication or disclosure by the Government is subject to restrictions as set forth in subparagraph c 1 ii of the Rights in Te...

Page 3: ...structions 19 Step 2 Installing Application Software on the PC 23 Step 3 Running the RT Pro Software 24 Updating the Device Driver 26 Uninstalling the Device Driver 30 5 Maintenance 38 6 Calibration 39 What Do We Calibrate 39 Signal Source Used for Calibration 39 Calibration Tools 40 Installing the Calibration Software 41 Calibration Procedure 42 7 System Troubleshooting 59 USB not connected at ap...

Page 4: ......

Page 5: ...nd environmental requirements and safety considerations Any person responsible for installing maintaining or calibrating the system should be fully familiar with the contents of this manual For instructions on using the system refer to the RT Pro Dynamic Signal Analysis Series Other sections of this manual cover Power and environmental requirements Safety Installation Maintenance Calibration Troub...

Page 6: ...ata floppy disk and a one year warranty The Focus II has a serial bus structure and allows for modular expansion Board installations must be performed by an authorized LDS Dactron representative The basic system is configured as 4 analog input channels and 2 output channels Extra inputs are added in 4 channel increments by purchasing FCS 201 analog input modules Functionality may also be added thr...

Page 7: ...der tracking and waterfall analysis Environmental Data Reduction Transient capture and SRS analysis Swept Sine Analysis Swept Sine analysis with digital tracking filters Long Waveform Recording Gap free streaming of data to disk while performing real time analysis Calibration In house System Calibration Post Processing Options Description RT Pro Playback Time and frequency domain signal analysis A...

Page 8: ...peakers Warning Do not connect analog voltage signals exceeding 40 Volts to the input or tachometer channels or the system electronics may be damaged LED s on the front panels provide status indication SYS _ flashes when the unit is powered and the hardware code has been loaded ACQ flashes when the system is acquiring data and on otherwise INPUT lit green when unit is powered on and input voltage ...

Page 9: ...n Detailed view of the Focus II Strain Gage Connector THERMO lit green when unit is powered on and input voltage does not exceed the voltage range They are lit red when input voltage exceeds voltage range indicating overload condition Note also that the thermocouple module is equipped with sensor auto detection meaning that the LED s are lit green when sensors are attached and lit red when sensors...

Page 10: ...on from the standard maximum of 20 to up to 40 simultaneous channels The SYNC port connector is an 8 pin female mini DIN which accepts standard male to male cables The 8 pin mini DIN cable should be shielded and be no longer than 2 0 ft Detailed view of the Focus II Sync Port The two side panels contain cooling fans The Focus II contains a thermostatic sensor that automatically controls the operat...

Page 11: ...rotect the system from vibration shocks An integrated handle is available for easy transport of the Focus II There is also an attachable foot that allows the Focus II to be placed in a standing tower position Horizontal arrangement of the Focus II Vertical Tower arrangement of the Focus II The vertical configuration is achieved by securing the provided foot attachment There is also a convenient ha...

Page 12: ...ion Focus II System Guide 8 Front view of the Focus II showing Connectors for 20 Channels 2 Output Source Channels Power Switch AC Adapter Jack and USB Cable Port Rear view of the Focus II showing the Sync Port ...

Page 13: ...t Analog to Digital Converter ADC Filtering An analog filter plus a 160 dB octave linear phase digital filter prevent aliasing and phase distortion Frequency range 42 kHz analysis frequency 96k samples per second Voltage range 10 Vpeak Signal conditioning Voltage ICP sensor power 4 7 mA 30 Vpeak open circuit and TEDS Maximum input 40 Vpeak without damage Resolution 24 bit Dynamic range 120 dBfs 11...

Page 14: ... DC or Digital AC A D 24 Bit Sample rate 32 S s to 96 kS s Bandwidth DC 30 kHz Filter Analog and Digital Anti Alias Filters Ripple Elimination Filter DC Gain Accuracy 0 1 for 100 mV input range 0 3 for 20 mV input range 0 5 for 10 mV input range 0 8 for 5 mV input range 1 2 for 2 mV input range Offset error 100uV max Auto Balance 16 bits D A converter Auto Balance Limits 500mV to 500mV for all inp...

Page 15: ...ensation One sensor per Channel 0 5 Degree C accuracy Input Range 9mV 18mV 36mV 54mV 72mV J C 50 150 50 300 50 60 Not USED 50 1200 K C 50 200 50 400 50 800 50 1300 Not USED Filter Analog and Digital Anti Alias Filters Ripple Elimination Filter Switch off leakage 0 5nA 25 degree C 2 5nA from 0 to 70 degree C DC Gain Accuracy Input Range 9mV 18mV 36mV 54mV 72mV Offset 0 4 0 2 0 1 0 1 0 1 DC accuracy...

Page 16: ... modules with multiple 75 MHz 32 bit floating point DSP processors Rubber bumper guards for shock protection and stabilization Front panel Bi color status LEDs power switch USB connector and AC adaptor jack Back panel sync port Input expansion From four up to forty total inputs PC configuration PC with USB connector Windows 2000 XP Operating System and Microsoft Word are the only requirements PC e...

Page 17: ...een tested and found to comply with the limits for a Class A digital device pursuant to Part 15 of the FCC Rules These limits are designed to provide reasonable protection against harmful interference when operated in a commercial environment This equipment generates uses and can radiate radio frequency energy and if not installed and used in accordance with the instruction manual may cause harmfu...

Page 18: ...able gases or fumes Operation of any electrical instrument in such an environment constitutes a definite safety hazard Keep Away From Live Circuits Operating personnel must not remove the system cover Qualified service personnel must make component replacement and internal adjustments Do not replace components with power cable connected Under certain conditions dangerous voltages may exist even wi...

Page 19: ...tronic equipment when handling calibrating or maintaining this system Warning Under no circumstances should an operator remove any covers screws or in any way enter the Focus II System There are no operator settable controls or adjustments inside the Focus II Warning To prevent potential fire or shock hazard do not expose the system to rain or moisture Warning Do not connect analog voltage signals...

Page 20: ...r of channels and sources activated It is recommended that the external AC to DC adaptor be rated at 72 Watts to provide a factor of safety and adequate power for any start up surges USB Cable Requirements It is recommended that a USB 2 0 cable be used with the Focus II Note USB 2 0 cables are typically of higher quality than USB 1 0 or 1 1 cables The exterior of the cable should be marked as USB ...

Page 21: ...up to 87 8 ºF 31 ºC and 50 for temperatures up to 104 ºF 40 ºC 2 Maximum operating altitude up to 6000 ft 2000 m 3 For use in an indoor environment only 4 For use with mains supply of Installation Category II 5 For use in Pollution Degree 1 or 2 environments Warning To prevent potential fire or shock hazard do not expose the system to rain or moisture Storage and Shipment Store the Focus II in a c...

Page 22: ...e system with heavy paper or plastic 2 Use a strong shipping container A double wall carton made of 350 pound test material is adequate 3 Use a layer of shock absorbing material 3 to 4 inches 70 to 100 mm thick around all sides of the system to provide firm cushioning and prevent movement inside of the container Protect the control panel with cardboard Caution Styrene pellets in any shape should n...

Page 23: ...ed into the USB port To install the Focus II driver you will need the Focus II hardware a USB cable and the installation CD The driver installation process first locates the inf file named Focus inf on the CDROM Using the information provided by Focus inf the device driver file Focus sys is copied into the WINDOWS SYSTEM32 DRIVERS folder The operating system registers the Focus II device in its re...

Page 24: ...ll CD into the CD drive 3 Plug the USB cable into the Focus II and the PC The PC will auto detect the presence of the new hardware and launch the New Hardware Wizard Note the dialog boxes shown below apply to Windows XP The dialog for Windows 2000 may vary slightly 4 Select Install from a list or specific location Advanced And click on the Next button The driver files are named Focus sys and Focus...

Page 25: ...ons Specify a location and enter the path to the CD drive For example if the CD drive is the d drive you would type d as the path Windows remembers the path to the previous USB device installation so you may need to delete the old path and re type the path to the CD drive Click on the Next button ...

Page 26: ...arts the following dialog may open Click on Continue Anyway to complete the installation This dialog indicates that LDS Dactron has not registered the driver with Microsoft Corporation The driver installation should now be complete 6 Click on the Finish button to close the New Hardware Wizard ...

Page 27: ...auto detected every time it is plugged into the USB cable on this PC Step 2 Installing Application Software on the PC Application software such as the RT Pro Dynamic Signal Analysis Series is installed on the host PC Refer to the RT Pro Dynamic Signal Analysis Series User Guide Installation and Setup Procedure for complete details on installation of application software The Focus II is now ready t...

Page 28: ...o the PC s USB connector please do so now Then start the application software by either double clicking on the RT Pro icon on the Windows desktop or by selecting RT Pro from the Windows Start menu 2 The next screen that appears is the hardware initialization screen which shows the progress of the system firmware download into the Focus II s Digital Signal Processors 3 Once the DSP code download is...

Page 29: ...to shipment You must load this file in order to have a calibrated and accurate Focus II After placing the calibration diskette in your A drive select Yes to import the calibration file 5 Your Focus II system is now calibrated You will next see the RT Pro Focus Start up Page 6 You are now ready to use your Focus II system Please refer to the RT Pro User Guide included on a CD ROM that arrived with ...

Page 30: ... whether an update is necessary If you get an error message indicating that a newer version of the device driver is required then you must update the Focus II device driver To update the LDS Dactron Focus II device driver follow these instructions The figures are for Windows XP and may vary for Windows 2000 1 Go to the Windows Start button and select Control Panel and then double click System from...

Page 31: ...wn to Universal Serial Bus controllers click the icon to expand the selection and right click on LDS Dactron Focus USB 2 0 device Select Update Driver from the pop up menu Select Install from a list or specific location Advanced And click on the Next button ...

Page 32: ...ve The updated driver files are named Focus sys and Focus inf and are located on the root directory of the installation CD ROM For example if the CD drive is the d drive you would type d as the path Windows remembers the path to the previous USB device so you may need to delete the old path and re type the path to the CD drive Click on the Next button ...

Page 33: ...driver installation starts the following dialog may open Click on Continue Anyway to complete the installation This dialog indicates that LDS Dactron has not registered the driver with Microsoft Corporation 4 Click on the Finish button to close the Hardware Update Wizard ...

Page 34: ...recommended that a network administrator or other computer expert perform this operation The process of uninstalling the device driver is vastly different for each operating system Refer to the instructions below for your operating system Windows XP To uninstall the Focus II device driver in Windows XP follow these instructions 1 Go to the Windows Start button and select Control Panel and then dou...

Page 35: ...icon to expand the selection and right click on LDS Dactron Focus USB 2 0 device Select Uninstall from the pop up menu The Focus II will only be listed if it is connected via the USB cable If the Focus II is not connected it will not be listed in the Device Manager 3 Click OK to confirm the device removal ...

Page 36: ...been uninstalled 5 Scroll down to Universal Serial Bus controllers click the icon to expand the selection If an unknown LDS Dactron Focus USB 2 0 device Focus or USB Device appears in Universal Serial Bus controllers right click on the unknown LDS Dactron Focus USB 2 0 device Focus or USB Device Select Uninstall from the pop up menu ...

Page 37: ...c You can open each oem inf file and find the one that lists FOCUS at the top of the file There may be more than one Note the of the oem inf file s close the file and then delete it C WINDOWS INF oem PNF Delete the file with the number associated with the oem inf file s from the previous step The driver should now be completely uninstalled Please be very careful when you delete files from your PC ...

Page 38: ...stem from the list of control panels Click on the Hardware tab and then the Device Manager button 2 Scroll down to Universal Serial Bus controllers click the icon to expand the selection and right click on LDS Dactron Focus USB 2 0 device Select Uninstall from the pop up menu The Focus II will only be listed if it is connected via the USB cable If the Focus II is not connected it will not be liste...

Page 39: ...m hex C WINT inf oem inf There may be several s e g oem0 inf oem1 inf oem2 inf etc You can open each oem inf file and find the one that lists FOCUS at the top of the file There may be more than one Note the of the oem inf file s close the file and then delete it C WINNT inf oem PNF Delete the file with the number associated with the oem inf file s from the previous step 5 Perform a power down of t...

Page 40: ...rdware tab and then the Device Manager button 7 Scroll down to Universal Serial Bus controllers click the icon to expand the selection and right click on the unknown LDS Dactron Focus USB 2 0 device Select Uninstall from the pop up menu The Focus II will only be listed if it is connected via the USB cable If the Focus II is not connected it will not be listed in the Device Manager ...

Page 41: ...ck OK to confirm the device removal The driver should now be completely uninstalled Please be very careful when you delete files from your PC s Windows system folder If other files are deleted accidentally your PC or programs may not function correctly ...

Page 42: ...e Focus II system Warning Under no circumstances should an operator remove any covers screws or in any way enter the Focus II System There are no operator settable controls or adjustments inside the Focus II Any hardware expansion must be performed by an authorized LDS Dactron representative ...

Page 43: ...plitude characteristics of the input and signal source are not frequency dependent An acceptable level of flatness is guaranteed over the entire useful frequency range Therefore we do not recommend calibration of the amplitude vs frequency characteristics The signal output from either Output 1 or Output 2 of the Focus II can be used to calibrate the input channels The key is a good signal referenc...

Page 44: ...tion fails Calibration Two Pane Display Screen Calibration Tools To calibrate the Focus II with the LDS Dactron calibration software you will need the following items for 1 Output Module Calibration a 1 BNC cable b Voltmeter BNC adapter cable c Voltmeter with a valid calibration certificate The accuracy of the voltmeter should be 0 25 or better in order to ensure that the LDS Dactron system is cal...

Page 45: ...onnecting box linking each of the individual BNC cables together at one end 4 Strain Gage Module Calibration a 3 BNC cables b 1 Strain Gage 4 Channel to BNC Y adapter cable c Attenuator Module 5 Thermocouple Module Calibration a 2 BNC cables b 4 Thermocouple to BNC adapter cables c BNC T Connectors or connecting box linking each of the individual BNC to Thermocouple adapter cables together at one ...

Page 46: ...Output 1 calibration 5 Validate the calibration results 6 Repeat steps 3 4 and 5 for Source 2 7 Perform Attenuator module calibration applicable to calibration of Strain Gage and Thermocouple modules 8 Input module a Perform Input module calibration b Repeat step 8 a for each additional Input module residing in the system 9 Strain Gage module a Perform Strain Gage module calibration b Repeat step ...

Page 47: ...e to a voltmeter that is certified to the accuracy standard noted in the calibration tool requirements section 0 25 or better Note during the calibration process the operator will be prompted to disconnect and relocate BNC cables as necessary Power up the Focus II and wait a minimum of 10 minutes prior to continuing If required record environmental parameters such as pressure humidity etc ...

Page 48: ...nd of the BNC cable to Attenuator Input Connect a BNC cable from Attenuator Output to a voltmeter that is certified to the accuracy standard noted in the calibration tool requirements section 0 25 or better Power up the Attenuator Module and wait a minimum of 10 minutes prior to continuing If required record environmental parameters such as pressure humidity etc ...

Page 49: ...Focus II System Guide 45 Input Module Cable Connection for Input Module Calibration Connect BNC cables to Input Channels 1 4 and Signal Output 1 Chain together the open ends of the BNC cables with BNC T Connectors ...

Page 50: ...able from Signal Output 1 to Attenuator Input Connect the Strain Gage to BNC Y adaptor cable to Strain Gage Channels 1 4 Connect a BNC cable from the Input BNC of the Strain Gage to BNC Y adaptor cable to Attenuator Output Connect a BNC cable from the Sensing BNC of the Strain Gage to BNC Y adaptor cable to Signal Output 2 ...

Page 51: ... Thermocouple Module Calibration Connect a BNC cable from Signal Output 1 to Attenuator Input Connect the Thermocouple to BNC adaptor cables to Thermocouple Channels 1 4 Connect a BNC cable to Attenuator Output Chain together the open ends of the BNC cables with BNC T Connectors ...

Page 52: ...the calibration software by clicking the Calibration icon Select New under the File menu The user will be prompted to enter information pertaining to operator name and the voltage meter to be used during calibration Select OK after the appropriate information has been entered ...

Page 53: ...or to calibration If a strain gage module or a thermocouple module resides in the unit to be calibrated the attenuator module should also be powered on at this time to allow the module to stabilize to normal operating temperatures Click OK to acknowledge warning This will open the normal LDS Dactron Control System screen LDS Dactron Calibration Control System Screen ...

Page 54: ...stem Guide 50 Click the Start button on the Control Panel and a Board Selection dialog box will appear highlighting the board to be calibrated Follow the step by step instructions to begin calibration of the highlighted board ...

Page 55: ...the value in the edit box Please allow enough time for voltmeter readings to stabilize Stability can be assumed if the readings vary less than 2 of the total measurement reading on all ranges DC Measurement for Offset Calibration You will also be requested to measure the RMS value of the signal source and type it into the dialog box Note The voltmeter should remain in DC measurement mode DC Measur...

Page 56: ...rement and entry of the DC reading from the voltmeter The software will check the deviation of its expected value and the measured value DC Measurement for Offset Verification DC Measurement for Gain Verification After verification both the offset and gain error should be within tolerance The pass no pass tolerance used during the verification is 10 volt range 1 of the Full Scale Once this step is...

Page 57: ...e voltmeter and type the value in the edit box Please allow enough time for voltmeter readings to stabilize Stability can be assumed if the readings vary less than 2 of the total measurement reading on all ranges DC Measurement for Attenuator Offset Calibration You will also be requested to measure the RMS value of the Attenuator signal source and type it into the dialog box Note The voltmeter sho...

Page 58: ...suring again the DC offset and RMS values A dialog box will ask for a measurement and entry of the DC reading from the meter The software will check the deviation of its expected value and the measured value DC Measurement for Attenuator Offset Verification DC Measurement for Attenuator Gain Verification After verification both the offset and gain error should be within tolerance The pass no pass ...

Page 59: ...s The input calibration process depends on an accurately calibrated Output channel If the Output is not accurately calibrated the validation report will document less than satisfactory results for both input and signal source channels Input Module Calibration Verification After the Input module is calibrated the software verifies the calibration results This verification is performed automatically...

Page 60: ...rocess The strain gage calibration process depends on an accurately calibrated attenuator Output channel as well as an accurately calibrated Output 2 channel If the Outputs are not accurately calibrated the validation report will document less than satisfactory results for both strain gage and signal source channels Strain Gage Module Calibration Verification After the Strain Gage module is calibr...

Page 61: ... The thermocouple calibration process depends on an accurately calibrated attenuator Output channel If the attenuator Output is not accurately calibrated the validation report will document less than satisfactory results for both thermocouple and signal source channels Thermocouple Module Calibration Verification After the Thermocouple module is calibrated the software verifies the calibration res...

Page 62: ...S DactronCalib directory You can view the calibration report in text mode at any time This Calibration Report is the basis for any calibration certification requirement Preview of the Calibration Report To use the calibration data file copy it into the BIN folder where the LDS Dactron software application resides Important The calibration software does not copy the calibration files to the BIN fol...

Page 63: ...ocus II System Each layer generates and sends a message to the system user interface in the event of an error condition These messages aid in diagnosing and resolving problems PC PC Windows Application Software Device driver Focus USB 2 0 interface Master DSP processing DSP A D DSP A D DSP A D DSP A D DSP A D DSP A D DSP D A high speed bus ...

Page 64: ...ollowing error message Click on Abort connect the Focus II to the PC with a USB cable and restart the application software Check if USB driver is installed correctly To determine if the driver software has been installed and if the PC recognizes the Focus II first connect the Focus II to the PC with a USB cable The go to the Windows Start button and select Control Panel then double click System fr...

Page 65: ...connected via the USB cable If the Focus II is not connected then it will not be listed in the Device Manager list If the LDS Dactron Focus USB 2 0 device driver is not listed and the Focus II is plugged in then the drive may not be installed correctly Try reinstalling or updating the device driver Failure to initialize the Focus II If power is lost or reduced below the minimum requirements during...

Page 66: ...tween the Focus II and the PC while the application software is running the following error message will be displayed Follow the instructions provided to re establish communication with the Focus II Windows Application Software Failure If any Windows application or DSP software modules are missing the following type of error message is displayed ...

Page 67: ...cidental use Warranty does not apply to defects resulting from a improper or inadequate maintenance or calibration b software interfacing parts or supplies not supplied by LDS c unauthorized modification or misuse d operation outside of the published environmental specifications for the product or e improper site preparation or maintenance NO OTHER WARRANTY OR CONDITION WHETHER WRITTEN OR ORAL IS ...

Page 68: ...Dactron directly at using the contact information on the cover page TO RECEIVE WARRANTY REPAIR SERVICE To obtain warranty service or repair LDS Dactron products must be returned to a service facility designated by LDS Buyer shall prepay shipping charges to LDS and LDS shall pay shipping charges to return the product to Buyer However Buyer shall pay all shipping charges duties and taxes for product...

Page 69: ...Manual Revision History Focus II System Guide 65 9 Manual Revision History Date Manual Revision Notes Jul 2004 3 00 66 pages Product Release ...

Page 70: ... I Introduction 1 L LED s 4 M Maintenance 38 P Power Requirements 16 S Safety 14 Shipment 18 Software Option 3 Specifications 9 Storage 17 System Description 2 System Installation 19 System Troubleshooting 59 U Uninstalling the Device Driver 30 Updating the Device Driver 26 USB Cable Requirements 16 W Warranty Statement 63 ...

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