LAPLACE INSTRUMENTS RF6000 Скачать руководство пользователя страница 1

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RF6000

RF SIGNAL SYNTHESISER

and SYSTEM CONTROLLER

USER GUIDE

ISSUE 1 May 2019

LAPLACE INSTRUMENTS LTD

Содержание RF6000

Страница 1: ...RF6000 RF SIGNAL SYNTHESISER and SYSTEM CONTROLLER USER GUIDE ISSUE 1 May 2019 LAPLACE INSTRUMENTS LTD ...

Страница 2: ...Laplace Instruments Ltd Synthesiser Manual Page 2 This page is intentionally blank ...

Страница 3: ...3 Introduction 4 Hardware description 4 1 Hardware interconnections 5 Software operation 5 1 Installation 5 2 Overview 5 3 Preparation 5 4 Standard Scan Mode 5 5 Single Point Mode 5 6 Custom scan mode 6 Software Reference 6 1 File 6 2 Display 6 3 Configure 7 Report Results screen controls ...

Страница 4: ...Laplace Instruments Ltd Synthesiser Manual Page 4 This page is intentionally blank ...

Страница 5: ...ort Environment Windows XP Win7 Win8 Win10 Main control Start test RUN Stop test STOP Pause at frequency Dwell Single frequency mode Setup screen Enables all parameters of a test scan and EUT details to be programmed Parameters Start and end frequencies Frequency step of current value Field strength 3 20V m Dwell time 1 99 seconds Modulation mode Single freq Screen Manually or automatically ramp t...

Страница 6: ...Laplace Instruments Ltd Synthesiser Manual Page 6 This page is intentionally blank ...

Страница 7: ...spects apart from the following Sensor requirements The system is designed for the following sensor types Holaday HI 4422 or the HI 6005 Radisense RSS1004A probe and CTR1001S interface Narda EP 600 range or equivalents The sensor should be connected to the synthesiser via the appropriate fibre optic cable and serial adaptor This adaptor or serial cable is connected via the serial port provided on ...

Страница 8: ...Laplace Instruments Ltd Synthesiser Manual Page 8 This page is intentionally blank ...

Страница 9: ... a dwell time The EUT should be monitored to detect faulty operation during the test During the dwell time a 1KHz AM modulation at 80 depth is applied to the signal In addition a specific test is required in mobile phone bands with a pulsed modulation of 100 depth to simulate the fields which may be experienced from mobile phones The synthesiser generates a signal at the required frequency modulat...

Страница 10: ...hnique There are two quite distinct ways in which field strength can be controlled The synthesiser allows use of both techniques To understand the background to these alternative techniques imagine the following scenario The equipment to be tested EUT is to be used in an area close to a strong transmitter perhaps a TV station and may therefore be subject to quite strong RF fields Indeed in one loc...

Страница 11: ...E An excursion into the red zone does NOT indicate an overload it simply indicates that the output is approaching full scale 3 Feedback signal indication This indicates an approximation of the feedback signal level to show the activity on this line 4 Connection to the test cell This includes an output to control the cell range and the input signal from the sensor inside the cell 5 This connects to...

Страница 12: ...3 Mains power ON OFF indicator Rear panel Mains power switch Mains input USB port Connected to the PC Serial RS232 port ONLY used if the remote sensor RH option has been specified CAUTION Ensure equipment is properly grounded to earth before use Do not cover any ventilation slots Use only volt free contacts for the EUT status signal ...

Страница 13: ...ogresses Each channel can be configured for pass fail thresholds using the Configure EUT Settings menu EUT Prompt The prompt output from the Synthesiser is a 4 pole c o relay All the contacts are brought out to a standard 15 way Dee type connector Connection details Common NO NC 10 1 9 11 3 2 12 7 8 13 15 14 The relay operates according to the mode selected in the software see section 5 4 2 Off No...

Страница 14: ... power cable to each item and switch on b Connect supplied USB lead from USB port on PC to rear panel connector on Synthesiser c Connect RF output lead from Synthesiser to RF input on RF1100 power amplifier P A with the supplied BNC BNC lead d Connect RF output from RF1100 to cell RF connector N type using cable provided Note normally ALWAYS leave this cable connected to cell When disconnecting th...

Страница 15: ...t the interconnections are as shown below Note that this diagram is for a complete system which includes the SA1002 or SA3000 analyser for emissions measurement Further details are included with the LETIS User Guide 4 1 4 System interconnection circuits These are provided so that the Synthesiser can be interfaced with other third party hardware When using Laplace ancillaries this section is redund...

Страница 16: ...F6000 assumes a response time of approx 10ms to match the performance of the probe included with the LaplaCell If an alternative probe is to be used ensure the response time is similar or shorter than the 10ms quoted above If a probe with a longer response time is to be used contact Laplace Instruments Ltd or the distributor for advice This connector provides 5v at 20mA for probe power and a conne...

Страница 17: ... saved files 5 1 Installation To install the program insert the supplied USB memory stick and run RFSynth6 msi This should create a directory c Program Files RFSynth6 and copy files into this directory 5 1 1 Installation of the Synthesiser USB Device Drivers under Windows Connect the Synthesiser to the USB port on your computer using the supplied cable and switch on the Synthesiser Windows should ...

Страница 18: ...tions for the software It is recommended that the default be accepted Click Next Click Install A pop up may appear which may request administrator rights In this case the Admin password will be required Install is now completed Click Finish A desktop icon will appear Now the drivers need to be installed ...

Страница 19: ...required USB driver is on the USB memory stick Click on the DeVaSys_UsbI2cIo_Drivers_x64 msi Click Next Read and accept then click Next Click Install A pop up may appear which may request administrator rights In this case the Admin password will be required ...

Страница 20: ...ereafter the software will run without the software but only for file view and printout purposes Repeat the sequence for any other USB devices connected eg LETIS Windows will automatically prompt you to load the second USB device driver You should load the cell calibration file cell0nnn csv from the supplied USB stick onto your PC using the main menu item Configure Cell Calibration item To start t...

Страница 21: ...Pause and STOP 5 The Main Test mode selection These control the mode of operation AND the content of area 6 see below The three test modes are i Standard Scan For conventional frequency scan of signal at fixed level V m ii Single Point frequency Manual or semi automatic control of frequency and level iii Custom Scan Enables programming of complex scan profiles as required for example by products w...

Страница 22: ...the standards for testing mobile phone immunity b Total manual control of the operation of the test 3 Custom scan mode Enables a frequency vs field strength profile to be programmed In addition the Standard and Custom scan modes can be run with either the normal using probe feedback for field control technique or with the Pre Scanned technique See section 5 4 1 In the next sections the operation o...

Страница 23: ...o be empty so that the field can be set inside the test volume without any distortion due to the presence of the EUT If Closed Loop testing is required Install configure and connect the EUT inside the test cell Check all EUT related systems are working properly a EUT operation b EUT status interface check response on Synthesiser software screen when EUT is made to fail c EUT prompt signal 5 4 2 Co...

Страница 24: ...p size can be used For very careful testing for narrow band effects smaller step sizes can be used 8 Select EUT prompt OFF or Pulsed or ON as required this parameter is not used during a pre scan See section 4 1 1 for details 9 Select EUT status either OFF if not used or Halt if the test is to be stopped in the event of an EUT failure or Continue if an EUT failure is to be ignored Note that failur...

Страница 25: ...oop Conventional defines the Pre scan mode of operation because this is the preferred technique according to the standard a If using conventional technique note that the Test button is greyed out until a Pre Scan has been acquired b Once this scan is completed the EUT can be installed in the cell and when the conventional Test button is subsequently clicked the scan progresses using the pre scan d...

Страница 26: ...witched off the system reduces the signal level to avoid overshooting at the next frequency point increases frequency to the next point adjusts the signal level to the required stress level then switches modulation back on and starts the next dwell period f If Pre scan was selected the scan proceeds without any dwell period modulation or EUT monitoring g At any time during the scan the dwell time ...

Страница 27: ...lar frequency this will be shown in the feedback level 5 4 4 Display of Results Whilst a test is in progress the results are plotted as they are received Red trace Target stress level Blue trace Actual achieved stress level Green trace EUT monitor channel A Light blue traces EUT channel A pass fail thresholds Note how the plotting area background colour changes when the EUT is outside the pass fai...

Страница 28: ...the step size is set by the Step Inc field 4 Set the starting field strength Level in the Field window 5 Click on the Closed Loop Test button The system will ramp up to the set level and remain a that level 6 The frequency and level can be adjusted by clicking on the appropriate UP or DOWN buttons 7 If modulation is required select the appropriate modulation in the pull down menu The modulation wi...

Страница 29: ...he vicinity of strong transmitters may be tested at a lower field for most frequencies maybe 3V m domestic environment but at transmitter frequencies a higher field strength would be sensible If a custom scan is required the profile is entered by clicking on the Custom Scan button in the test mode area The profile is entered in the custom scan table Only the change points need to be specified The ...

Страница 30: ... The cursor can be used to read frequency and stress levels at each step The EUT monitor section shows the pass fail thresholds the max and min excursions for each channel red bars and the current value black bar The background colour for the plotting area shows pale green normally but changes to pale red if any of the EUT monitoring signals exceed the pass fail thresholds ...

Страница 31: ...ettings Standard Scan Saves just the settings for a standard scan File Save Pre Scan Saves the pre scan data Print Prints to the local printer Produces a hardcopy of the plot screen and a tabular list of the results These include for each frequency step Freq MHz Field V m EUT status plus for each EUT channel Input max input min and pass fail status File Exit Exits the program Any data not Stored t...

Страница 32: ... probes apart from the LaplaCell the RH option is required 6 3 3 Cell Calibration Under Configure Cell calibration check the cell serial number and calibration plots If this is the first use of the system these must be installed Click the Load calibration button Enter the serial number note this should be a 4 digit number with the first digit a zero ie 0342 for a cell with serial number 342 Then c...

Страница 33: ...ure that the hardware USB links appear in the table b Set the paths for results and system data are appropriate 7 0 Report Results screen Frequency selector Plotting area EUT monitor area Trace selection area Trace Selection Traces can be switched On Off using the selectors and trace colours can be changed by clicking on the colour block ...

Страница 34: ...ach step indicated by a dot The default colour is red As the test proceeds actual stress level and any EUT inputs will be plotted Clicking on any point on any of the traces will show the frequency and value of that point on that trace Right clicking anywhere on the plotting area will reveal a menu a Reset zoom Return to the full span b Copy Pastes the plotting area to the clipboard c Print Prints ...

Страница 35: ...Laplace Instruments Ltd Synthesiser Manual Page 35 This page is intentionally blank ...

Страница 36: ...nts Ltd Synthesiser Manual Page 36 LAPLACE INSTRUMENTS LTD Tudor House Grammar School Road North Walsham Norfolk NR28 9JH UK T 44 0 16 92 40 20 70 F 44 0 16 92 40 49 10 e tech laplace co uk W www laplaceinstruments com ...

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