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4-6

4 Making Measurements

Stand-off

distance

The stand-off distance is measured from the front of the scanning head (refer

to the following figure).

Figure 4.2:

Measuring the stand-off distance

4.3.2

Optimal Stand-Off Distances

The relation between stand-off distance and signal level is shown in the

following figure. The optimal stand-off distances are marked as visibility

maximum.

Figure 4.3:

Relation between stand-off distance and signal level

Содержание PSV-500

Страница 1: ...Title Hardware Manual Polytec Scanning Vibrometer PSV 500 Scanning Head PSV I 500 Front End PSV F 500 HM Junction Box PSV E 530 PC PSV W 500 M For the PSV 500 HM System...

Страница 2: ...fied without authorization To return the equipment always use the original packaging Otherwise we reserve the right to check the equipment for transport damage Please mark the package as fragile and s...

Страница 3: ...and Inspection 3 1 3 2 Operating and Maintenance Requirements 3 2 3 3 Control Elements Indicators and Connections 3 4 3 3 1 PSV F 500 HM Front End 3 4 3 3 2 PSV E 530 Junction Box 3 6 3 3 3 PSV W 500...

Страница 4: ...ement Signal or Implausible Measurement Signals 6 3 7 Technical Specifications 7 1 7 1 Harmonized Standards Applied 7 1 7 2 PSV F 500 HM Front End 7 1 7 2 1 General Data 7 1 7 2 2 Signal Inputs and Ou...

Страница 5: ...ible danger resulting from an action which could lead to death or serious injury and how you can avoid it Intended use The instrument is intended for use in a laboratory and for operation in an indust...

Страница 6: ...t is used in the manner for which it was intended This means that the instrument conforms with laser class 2 and is generally very safe It is thereby usually assumed that eyes are protected by prevent...

Страница 7: ...long and hard to set it up Never intentionally direct the laser beam at anyone Do not use any reflective tools watches etc when you are working in the beam path of the laser Avoid staying in the scann...

Страница 8: ...an Union EU labels 2 and 3 are affixed in the language spoken in the customer s country see right hand side Figure 1 1 Laser warning labels Position The position of the laser warning labels on the sca...

Страница 9: ...s may only be connected up using a three pin mains cable to AC systems 50 60Hz with a grounded protective conductor and a nominal voltage of between 100V and 240V Defective mains fuses may only be rep...

Страница 10: ...1 6 1 Safety Information...

Страница 11: ...it and the CoherenceOptimizer for the stabilization of laser modes The PSV A 515 digital video camera is available as an accessory Then you can set which video camera is being used in the software In...

Страница 12: ...gnal flow in the system is shown in the following figure Figure 2 2 Schematic diagram of the signal flow in the PSV 500 HM H system Operation as an M system On the junction box analog reference signal...

Страница 13: ...odes The decoder and the filter in the front end as well as the data acquisition board determine the metrological properties of the PSV Depending on the application there are different operating modes...

Страница 14: ...2 4 2 Introduction...

Страница 15: ...uisition cable ACQ HM SMB SMB connecting cable 2 BNC SMB connecting cables Main cable Umbilical Mains cable for the multiple mains socket 3 mains cables for the system components 3 BNC cables 3 networ...

Страница 16: ...tic conditions refer to specifications in CHAPTER 7 In particular the optical components are sensitive to moisture high temperatures vibrations and dirt If you start operating the instrument after sto...

Страница 17: ...rological properties until a warm up period of approx 30 minutes For measurement tasks with high angular stability requirements we recommend a warm up period of 120 minutes This applies especially whe...

Страница 18: ...V Activating or deactivating the IEPE power supply is described in your software manual REF 2 to REF 8 analog inputs BNC jacks There are up to seven additional analog voltage inputs are available for...

Страница 19: ...o signal of the video camera in the scanning head 3 Identification label On the identification label you will find among other things the serial number of the instrument You will also find information...

Страница 20: ...generator 5 SIGNAL generator output BNC jack Analog voltage output for the signal of the function generator Back view The back view of the junction box is shown in the following figure Figure 3 4 Back...

Страница 21: ...following figure The lockable front flap is shown transparently Figure 3 5 Front view of the PC 1 Cooling fan 2 Power LED LED green ready to operate 3 HDD LED LED yellow hard disk drive HDD in the PC...

Страница 22: ...chnical data for the fuses and the mains connection 4 Monitor connection HDMI jack Connection is not used 5 Monitor connection 15 pin Sub D jack Connection is not used 6 IEEE 1394 interfaces FireWire...

Страница 23: ...work connection marked in blue Connection for the blue network cable from the front end from the junction box to transmit the video signal of the video camera in the scanning head 13 USB interfaces Un...

Страница 24: ...jack Input for the clock signal Clock to synchronize the generator board with the data acquisition board 2 Trg signal input SMB jack Input is not used 3 D1 pulse output SMB jack Output is not used 4 D...

Страница 25: ...t for PSV 3D or for the PSV A 525 protective window 2 Front lens of the video camera with M37 mounting thread for the filters and lenses only PSV I 500 Camera control via the software 3 Laser beam ape...

Страница 26: ...ion for a compensation sensor 5 OPTION connection 7 pin circular jack Connection for the connecting cable to the PSV A T11 pan tilt head to control the pan tilt head via the software not for PSV 3D Wi...

Страница 27: ...ad 1 M6 mounting threads For mounting or adapter plate e g for mounting on a tripod system 2 Mounting threads for quick release plate E g for mounting on a tripod with fluid head 3 Warning label To pr...

Страница 28: ...distance to the wall must be at least 50mm Provide sufficient free space under the instrument as air vents are located there NOTE Before starting to assemble the instrument make sure that all system c...

Страница 29: ...igure 3 11 Scanning head mounted on the light duty tripod with fluid head CAUTION Risk of falling caused by loose locking mechanisms and screws Loose screws may cause the tripod to be unstable and pos...

Страница 30: ...canning head while a second person opens the safety lever 2 Assemble the fluid head on the tripod as described in the assembly instructions provided by the manufacturer MANFROTTO 3 Open the locking me...

Страница 31: ...ard ring and take out the accessories 6 Remove the cardboard box and all the shock absorbing material 7 Under the system cabinet there is a box with the documentation for the measurement system Remove...

Страница 32: ...ical from the upper cover and the mouse and keyboard from the lower cover 5 Carefully remove the rear cover by loosening the wing screws and releasing the locking hooks CAUTION Damage to the system ca...

Страница 33: ...sition 4 Fix the locking hooks and tighten the wing screws again 5 Fold out the screen again If you order a system cabinet retrospectively you will have to install all the components in the system cab...

Страница 34: ...mmend connecting the rotatable connector to the scanning head Thus you avoid bending or twisting the cable when moving the scanning head 3 5 1 Connecting the Hardware Front end to PC 1 Plug the yellow...

Страница 35: ...NC plugs of the ACQ HM acquisition cable to the TRIG REF 1 REF 2 and REF 3 BNC jacks on the back of the junction box 9 To shield the cable plug one SHIELD blade receptacle of the ACQ HM acquisition ca...

Страница 36: ...3 22 3 First Steps Figure 3 14 Cabling of the front end with the PC the junction box and the scanning head I O SCANKOPF PSV I 500 FRONTEND PSV F 500 HM ANSCHLUSSBOX PSV E 530...

Страница 37: ...the back of the scanning head and connect it to a REF BNC jack on the front of the front end Figure 3 15 Cabling of the scanning head The A VIB ACC1 compensation sensor is available as an option OPTIO...

Страница 38: ...ect the external trigger signal to the TRIG IN BNC jack on the front of the junction box Function generator 4 The signal from the function generator is available at the SIGNAL BNC jack on the front of...

Страница 39: ...quired connect up the external trigger signal to the TRIG IN BNC jack on the front of the front end Function generator 4 The signal from the function generator is available at the SIGNAL 1 BNC jack on...

Страница 40: ...starting the software select the measurement system Ethernet for PSV 500 H PCI 6110 for PSV 500 M NOTE First of all always connect up all connecting cables Switch on the PC as the last instrument so...

Страница 41: ...laser beam Do not use any reflective tools watches etc when you are working in the beam path of the laser Wear suitable laser adjustment eyewear when you have to look at the target area of the laser...

Страница 42: ...teps Direction convention The following direction convention applies to the output signals A movement towards the scanning head is seen as being positive In this case the velocity output provides a po...

Страница 43: ...cable the system as described in SECTION 3 4 and SECTION 3 5 2 Turn the key switch on the front of the front end to position O and close the beam shutter on the front of the scanning head 3 Position...

Страница 44: ...tes This applies especially when you are working with imported 3D geometries 4 2 Selecting Suitable Settings 4 2 1 Measurement Range The available measurement ranges depend on the bandwidth set For th...

Страница 45: ...he Fast setting is suitable for all velocities and frequencies that may occur within the measurement range With the Medium setting the tracking filter is optimized for a maximum acceleration of 10 of...

Страница 46: ...is exceeded the Medium setting takes better effects If the maximum acceleration of Medium is exceeded the Fast setting takes better effects So if necessary you will have to try out the most favorable...

Страница 47: ...e signal level The diagram in FIGURE 4 3 shows the signal level depending on the stand off distance At certain distances visibility maxima the signal level is constantly high Between two visibility ma...

Страница 48: ...to the following figure Figure 4 2 Measuring the stand off distance 4 3 2 Optimal Stand Off Distances The relation between stand off distance and signal level is shown in the following figure The opt...

Страница 49: ...the laser mode The CoherenceOptimizer is a system to stabilize the laser modes It adjusts the laser resonator to a constant length so that a strongly dominant laser mode is formed This minimizes signa...

Страница 50: ...4 8 4 Making Measurements...

Страница 51: ...tch on the back to position I Then open the front flap using the key and press the POWER key NOTE After the PC has been switched on at first all system components are initialized This initialization t...

Страница 52: ...LASER LED remain lit if the laser is switched off using the software as this function only interrupts the emission of the laser beam from the scanning head 5 4 Setting up the Scanning Head Fluid head...

Страница 53: ...or if faults malfunctions occur which are not mentioned here please contact our service department Based on your fault description further procedure will be determined If the instrument has to be sen...

Страница 54: ...ould not be carried out send the log file together with the fault description to the service department of Polytec 6 2 Problems with the Laser 6 2 1 No Laser Beam If no laser beam is emitted check the...

Страница 55: ...al or Implausible Measurement Signals If the laser beam is emitted but there is no measurement signal or just implausible measurement signals check the following 1 Have you connected up the system cor...

Страница 56: ...100mm s measurement range 2 Put a matt white test surface such as a piece of paper approximately 50cm away from the front of the scanning head in the beam path 3 Focus the laser on the test surface 4...

Страница 57: ...for deviations pursuant to Laser Notice no 50 dated 24 June 2007 Electrical safety IEC EN 61010 1 2011 07 Safety requirements for electrical equipment for measurement control and laboratory use EMC I...

Страница 58: ...l 2 years Input voltage range 1V and 10V Input impedance 1M in parallel with 100pF Input coupling AC DC adjustable in the software AC 3dB cutoff frequency 0 05Hz Overvoltage protection 30V against dam...

Страница 59: ...ependent and specified for frequencies above 10Hz In the frequency range from 10Hz to 5kHz the specified decoder noise is superimposed by the scanner noise The resolution is then between 0 1 and 1 0 m...

Страница 60: ...y range from 10Hz to 5kHz the specified decoder noise is superimposed by the scanner noise The resolution is then between 0 1 and 1 0 m s with 1Hz spectral resolution 0 02 0 02 0 03 0 02 0 08 typicall...

Страница 61: ...ve 10Hz In the frequency range from 10Hz to 5kHz the specified decoder noise is superimposed by the scanner noise The resolution is then between 0 1 and 1 0 m s with 1Hz spectral resolution 0 04 0 2 0...

Страница 62: ...d for frequencies above 10Hz In the frequency range from 10Hz to 5kHz the specified decoder noise is superimposed by the scanner noise The resolution is then between 0 1 and 1 0 m s with 1Hz spectral...

Страница 63: ...utput channels 4 Maximum bandwidth 100kHz Mains voltage 100 240VAC 10 50 60Hz Power consumption max 525VA Protection class 1 protective grounding Operating temperature 5 C 40 C 41 F 104 F Storage temp...

Страница 64: ...tion generator M2i 6030 Output channels 1 Maximum bandwidth 1MHz 2MHz 1 Operating temperature 5 C 40 C 41 F 104 F Storage temperature 10 C 65 C 14 F 149 F Relative humidity max 80 non condensing Prote...

Страница 65: ...L CMOS Output voltage HIGH min 4 35V Iout 3 5mA Output voltage LOW max 0 4V Iout 5mA Laser type Helium neon Wavelength 633nm Cavity length 204mm 1mm Laser class 2 Laser power 1mW Power consumption app...

Страница 66: ...ns Housing Protection rating IP0 IP40 beam shutter closed or PSV A 525 protective window or PSV A 410 close up unit mounted Dimensions refer to the following figure Weight 9 2kg including geometry sca...

Страница 67: ...ical Specifications Dimensions Figure 7 1 Dimensions of the scanning head Dimensions not specified are given in mm 60 85 M 6 8 2x 86 103 150 370 Beam 0 6 4 5 Stand off distance 120 86 45 103 120 177 4...

Страница 68: ...Stand off distance1 1 Measured from the front of the scanning head Spot diameter 1 e2 typ Depth of focus typ 2 2 For 3dB signal reduction Aperture diameter3 3 At the front of the scanning head mm m m...

Страница 69: ...m Table of the Visibility Maxima 7 5 3 Scanner Visibility maxima mm for l 204mm 141 345 549 753 957 1161 1365 1569 1773 1977 2181 2385 2589 2793 2997 3201 3405 3609 3813 4017 4221 4425 4629 4833 5037...

Страница 70: ...m 20x optical zoom 12x digital zoom Lens F1 6 to F3 5 f 4 7 94mm Angle of view horizontal wide end approx 55 4 tele end approx 2 9 Minimum stand off distance wide end 10mm tele end 1000mm Minimum illu...

Страница 71: ...ose up range below 1 5m and a retro reflective film at longer distances NOTE If you use a retro reflective film in the range below 1 5m the sensor can overload and affect the measurement result Theref...

Страница 72: ...4 1 SECTION 4 2 SECTION 4 3 and your software manual If your system does not perform as described above read through the information on fault diagnosis provided in CHAPTER 6 and if necessary contact...

Страница 73: ...ng plate on the bottom of the scanning head with the two M6 x 16 countersunk screws as show in the following figure To do this use the size 4mm Allen key CAUTION Damage caused by assembly error Always...

Страница 74: ...d 5 Remove the tripod plate 6 Unscrew the three set screws on the bottom of the tripod plate Keep the set screws in case you may need them at a later date 7 Put the tripod plate onto the tripod again...

Страница 75: ...e pan tilt head on the connector box using the three M8 x 16 Allen screws and corresponding washers 13 Assemble the scanning head with mounting plate onto the pan tilt head using the two M6x16 Allen s...

Страница 76: ...from the connector box of the PSV A T11 pan tilt head into the circular jack on the pan tilt head CAUTION Damage caused by wrong voltage Check the setting of the voltage selector on the connector box...

Страница 77: ...downwards by 84 CAUTION Damage of the gear caused by additional load Do not place any heavy objects on the scanning head because this additional weight will damage the gear of the pan tilt head A 2 4...

Страница 78: ...lium neon block filter should be mounted additionally The block filter is screwed directly on the video camera aperture of the scanning head and reduces the intensity of the laser light back scattered...

Страница 79: ...se up unit is protected by a plastic plate To assemble the close up unit proceed as follows 1 If necessary screw the close up unit lenses or the block filter refer to SECTION A 4 on the video camera a...

Страница 80: ...n the following table Table A 1 Stand off distances and scan ranges of the close up lenses Max scanning angle in x direction 5 Max scanning angle in y direction 4 Dimensions w x h x d 124mm x 90mm x 7...

Страница 81: ...A 11 A Optional Accessories Dimensions Figure A 6 Dimensions of the scanning head with close up unit Dimensions not specified are given in mm Beam Beam 120 370 189 45 69 86 45 439 120...

Страница 82: ...2 Assembly Remove the protective cap of the objective of the close up unit and screw the micro scan lens onto the objective A 5 2 3 Operation If you use the micro scan lenses the autofocus of the PSV...

Страница 83: ...ning Only tighten the screws until they can not undo themselves 3 Remove the protective cap from the another end of the fiber cable 4 Insert the fiber cable into the Modulamp receptacle of the cold li...

Страница 84: ...rts with the PSV A 410 close up unit on the scanning head The PSV A T18 test stand is made up of Motorized stageless telescope drive Adapter plate for the PSV I 500 scanning head Drive control Hand se...

Страница 85: ...e device Figure A 9 Mounting the scanning head on the telescope drive of the vertical test stand 2 If applicable undo the quick release plate or the mounting plate for the pan tilt head from the scann...

Страница 86: ...re A 10 Mounting the scanning head on the telescope drive of the horizontal test stand 2 If applicable undo the quick release plate or the mounting plate for the pan tilt head from the scanning head 3...

Страница 87: ...ack 1 and to an earthed wall outlet A 5 4 4 Operating CAUTION Danger of crushing or damage caused by careless handling Do not bring any parts of the body in the operating range of the vertical test st...

Страница 88: ...to the left 2 Lock the set speed with the lever on the potentiometer A 5 4 5 Technical Specifications Drive Control Telescope Drive Mains voltage 230V 50Hz or 115V 50 60Hz Protection rating IP30 Dimen...

Страница 89: ...e vertical test stand with scanning head Dimensions not specified are given in mm Beam Movement 180 530 Beam 203 20 437 6 732 5 1082 5 439 30 72 5 Warning Do not bring any parts of the body or mechani...

Страница 90: ...horizontal test stand with scanning head Dimensions not specified are given in mm Beam 203 5 458 5 439 5 Beam 732 5 1082 5 189 5 539 5 Warning Do not bring any parts of the body or mechanical parts i...

Страница 91: ...ight is still too high it can be mounted additionally The block filter reduces the intensity of the laser light scattered back to the video camera by 98 To position and align the external video camera...

Страница 92: ...perture 3 Focusing ring Ring for manual focusing 4 Front lens A 6 3 Control Elements of the Video Camera with Zoom Lens Back view The back view of the video camera with zoom lens is shown in the follo...

Страница 93: ...or setting the orientation of the zoom lens 3 Aperture ring Ring for manual setting of the aperture 4 Zooming ring Ring for manual setting of the focal length 5 Focusing ring Ring for manual focusing...

Страница 94: ...rately When mounting do not touch both the optical surfaces lenses and the camera chip Only use a soft dry cloth an optics brush and bellows to remove dirt Scratched optical components getting unusabl...

Страница 95: ...ra plug the IEEE 1394 cable FireWire into the IEEE interface on the back of the video camera and into a free IEEE interface on the back of the PC A 6 5 Technical Specifications A 6 5 1 General Data Po...

Страница 96: ...5mm focus iris manually adjustable Angle of view horizontal 52 Stand off distance ca 200mm infinite Weight 54g Dimensions w x h x d 31mm x 36mm x 38mm Lens F 2 5 f 8 5 90mm zoom focus iris manually ad...

Страница 97: ...from the measurement For measurements with a stand off distance of more than 1m the disturbed scan range is limited to 1 In this disturbed scan range it is possible that also the autofocus is not work...

Страница 98: ...ning head using the two knurled screws refer to the following figure picture 2 CAUTION Damage caused by too strongly tightening Only tighten the screws until they can not undo themselves 3 Remove the...

Страница 99: ...lection angles is Cabling You have to assemble the provided 8 pin DIN circular plug before you can use the external scanner control Plug the 8 pin DIN circular plugs into the OPTION 8 pin circular jac...

Страница 100: ...h the scanning head with the EXT option For this plug the PSV A 523 bridging plug into the OPTION jack The bridging plug connects the DAC output signals to the control inputs of the scanners The wirin...

Страница 101: ...n moves on the detector and the displacement of the object can be determined using directionally sensitive counting of the passing fringe pattern The velocity component in the direction of the object...

Страница 102: ...plate is then focused by the lens on the object and scattered back from there The polarizing BS2 beam splitter then functions as an optical directional coupler together with the 4 plate and deflects...

Страница 103: ...C 1 C Declaration of Conformity Appendix C Declaration of Conformity Figure C 1 Declaration of conformity for the PSV 500...

Страница 104: ...C 2 C Declaration of Conformity...

Страница 105: ...l A 29 external trigger 3 24 3 25 function generator H system 3 25 function generator M system 3 24 main components 3 20 mains connection 3 26 operating conditions 3 2 pan tilt head A 6 reference sign...

Страница 106: ...ions A 2 H housing cleaning 3 3 front end specifications 7 2 industrial PC specifications 7 7 junction box specifications 7 8 pan tilt head specifications A 7 scanning head specifications 7 10 I ident...

Страница 107: ...3 7 specifications 7 7 pin configuration external scanner control A 29 POWER LED on the front end 3 5 precautions electrical safety 1 5 laser safety 1 3 problems with the laser fault diagnosis 6 2 wit...

Страница 108: ...iple 2 2 summary 2 1 system summary introduction 2 1 PSV operating modes 2 3 T tampering with the instruments 3 3 test stand assembly A 15 cabling A 17 dimensions A 19 introduction A 14 operate A 17 s...

Страница 109: ...ytec com Internet http www polytec com France FRA Polytec France S A S B timent Orion 1er tage 39 rue Louveau 92320 Ch tillon France Tel 33 1 496569 00 Fax 33 1 57214068 E mail info polytec fr Interne...

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