LAPLACE INSTRUMENTS 0619 User Manual Download Page 1

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LAPLACELL 600

Serial number 0619

USER GUIDE

Issue 3 September 2003

LAPLACE INSTRUMENTS LTD

Summary of Contents for 0619

Page 1: ...LAPLACELL 600 Serial number 0619 USER GUIDE Issue 3 September 2003 LAPLACE INSTRUMENTS LTD...

Page 2: ...sensor 2 4 EUT I O facilities 3 INSTALLATION 3 1 EUT Connections 3 2 RF Connections 4 EMISSIONS 4 1 Emission test notes 4 2 Cell characteristics 4 3 Calibration 5 IMMUNITY 5 1 The standard 5 2 General...

Page 3: ...he need for ground planes and height scanning When used with the RF1000 synthesiser and RF1100 power amplifier or any other suitable equipment fully compliant IEC61000 4 3 testing can be accomplished...

Page 4: ...of the sensor to conserve battery power The settling time of this cell is consequently much faster than with most other types of cell The RF connector on the nose of the cell is used for both input o...

Page 5: ...ata Supplied with each cell Sensor supply 12v dc input 800mA Power input Impedance 50ohm Input VSWR 1 5 1 Input connector N Type Emissions mode Output Impedance 50ohm Output connector N type I O facil...

Page 6: ...itch is provided so that the frequency range can be selected This range can also be controlled via the 8 way cable connection to the system control unit normally the RF1000 or RF2000 An N type connect...

Page 7: ...etween 300 and 400MHz Each cell is individually set at the optimum change frequency and this is given in the calibration data Normally the cell range control is driven by an external control system su...

Page 8: ...e assembly of these castors is provided with the shipping documents but is repeated here in case the shipping documents are mislaid The castors mounting bolts and a 17mm spanner are all boxed with the...

Page 9: ...routine maintenance is required for the chamber Calibration Annual calibration is recommended Call your local representative for details Access The only access into the cell is via the hinged door Wh...

Page 10: ...filter unit panel with supplied cable EUT connections The IEC and Wago EUT connections are pi filtered using feedthrough filters with a capacitance to ground of 5nF High speed data transmission lines...

Page 11: ...CLIENTS user guide SA1000 Page 11 Figure 2 Typical connections at filter unit Figure 3 Rear view of cell showing facilities for connections to EUT inside the cell...

Page 12: ...ctor Replacement of the RF input connector or the probe connector should never be attempted by the user 3 3 Controls On the side panel of the nose unit The key control is the frequency selector switch...

Page 13: ...ctive manner and kept within the EUT test volume Do not allow excess cable in the filter connection compartment Multiple scans should be taken with the EUT in different positions and orientations as i...

Page 14: ...iability The draft standard which relates to the calibration of test cells IEC61000 4 20 is also based on these NPL techniques Calibration is accomplished with an Emissions Reference Source traceable...

Page 15: ...ferent results This is a common feature of GTEM and similar cells It happens when the wavelength becomes comparable with the physical dimensions of the cell In particular note how narrow dropouts occu...

Page 16: ...d highest lowest A F values Cell 020 20 10 0 10 20 30 40 50 0 100 200 300 400 500 600 700 800 900 1000 Frequency MHz Antenna Factor dB Figure 8 Cell Antenna Factor for 3 metre OATS The thick line show...

Page 17: ...combinations of 4 plotted 10 00 8 00 6 00 4 00 2 00 0 00 2 00 4 00 6 00 8 00 10 00 0 200 400 600 800 1000 1200 MHz Error dB Typical 4 B D H J Typical 4 C E F K Typical 4 D F I M Figure 10 This shows t...

Page 18: ...the figures are 96 31 97 34 and 97 34 This shows that the choice of locations within the volume will have an effect on the results but as figure 6 graphically shows the effect is marginal Taking more...

Page 19: ...ay be experienced from mobile phones 5 2 General immunity requirements The strategy for immunity testing is similar to that of the emissions tests described above Immunity scans should be carried out...

Page 20: ...w If using the Laplace RF2000 synthesiser an 8 way cable is included with the system otherwise a mating connector is supplied Pin number Function 1 Hi Field strength feedback 0 2 5v 2 Lo Field strengt...

Page 21: ...SA1000 analyser This simplified data can be seen as the second red line on the Emissions L page in the excel file The immunity data is provided at 4MHz intervals up to 1GHz and 4MHz intervals above 1...

Page 22: ...CLIENTS user guide SA1000 Page 22 ANNEX 1 Calibration data for cell 619 Cell switching frequency 350MHz...

Page 23: ...CLIENTS user guide SA1000 Page 23 Cell 619 Emissions L 10 5 0 5 10 15 20 0 100 200 300 400 500 600 700 800 900 1000 Frequency MHz Antenna Factor...

Page 24: ...CLIENTS user guide SA1000 Page 24 Cell 619 Emissions H 0 00 5 00 10 00 15 00 20 00 25 00 1000 1200 1400 1600 1800 2000 2200 2400 2600 2800 Frequency MHz Antenna Factor...

Page 25: ...CLIENTS user guide SA1000 Page 25 Cell 619 Immunity L 0 000 0 500 1 000 1 500 2 000 2 500 0 100 200 300 400 500 600 700 800 900 1000 Frequency MHz Probe output V 3 V m 7 V m 12 V m 20 V m...

Page 26: ...ENTS user guide SA1000 Page 26 Cell 619 Immunity H 0 000 0 500 1 000 1 500 2 000 2 500 3 000 1000 1200 1400 1600 1800 2000 2200 2400 2600 2800 3000 Frequency MHz Probe output V 3 V m 7 V m 12 V m 20 V...