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Manual - MPB (UK)

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1. TX Tuned and Ready to 144 210005 Next Prev Meas By pressing Meas the SEMS will start measuring the shielding effectiveness on the selected frequency displaying the current attenuation along with the maximum and minimum value in brackets 144 210005 MHz 112 4 134 4 Att 120 1 dB 25 USER S MANUAL SEMS By pressing Clear the maximum and minimum values are reset and by pressing Stop you will halt the measure 144 210005 MHz Sniffing terminated 112 4 134 4 Meas Show Cal Snif By pressing Snif again you can restart the sniffing sequence or select a different frequency Keep in mind that this operating mode can be successfully used in environments where both the RS232 Wireless Adapter is unusable allowing along with the Unconnected Mode see the relative section in this manual a full environmental investigation The devices need to communicate only during the selection of the frequency As soon as the frequency is selected you will read the message TX Tuned and Ready From now on you can remove all the connections and start the measurement You ll need to restore the communication between TX and RX units only if you need to change the working frequency You can work with the sniffing mode with Loop Mod L 3 antenna like in picture 7 Picture 7 26 USER S MANUAL SEMS 3 3 WIZmenu To improve the management of the measurement saving procedure you can use the
2. SEMS The updatable file SemsFw ldr should be located in the SEMS software directory Press the Update Firmware button and wait for the loading When the upgrade is completed close the window and turn off the receiver Other information www gruppompb com Technical information assistenza gruppompb com Phone 39 06 41200744 60
3. Ch A means that the chosen chamber is called A Sp 1 2 is the measurement spot index in this case the spot is the 1st of the 2 R 1 2 is the antennas system range that we are using in this case we are using the first system of the 2 Spot Done means that the measurement is completed for this spot with the indicated range the value shown nearby beneath brackets is the maximum attenuation of the whole frequencies _ 30 USER S MANUAL SEMS The Next button must be pressed to get to the next spot If all the required spot have been measured the procedure automatically switches to the next pair of antennas and shows again the auto zeroing screenshot If you used all the antennas systems that you selected the procedure is over and it will return to the main screenshot with a success message about the data storing The Redo button repeats the measurement for the selected spot shown in the screen as soon as this operation is completed the display shows the same screenshot with the updated value of the maximum attenuation The End button stops the measurements with the current set of antennas By pressing it the instrument will ask us to change the antennas and to start the auto zero procedure if the antennas systems have all been selected the procedure will end with a message of success about the storing of the data and you will go back to the main screenshot WARNING Pressing the End button
4. SEMS s wizard for a better organization of data storage To use the wizard press the WIZ button in the top menu of the device The wizard will lead the user throughout the procedure asking the following questions The selection of the chamber where the measurements are performed A B C D Using A B C e D you can identify a shielded chamber Then the user has to remember the letter assigned to the chamber where the measurements were done Mm Choosethe Chamber you want To measure Choice of the maximum number of spot to be measured 1 2 4 8 Represents the number of measuring spot assigned for each chamber The user must sort chronologically the measured spot and he will find the same order in the instrument memory Mm Selectthemax number of spot to be measured 297 USER S MANUAL SEMS The selection of ranges antennas to be measured 1 2 3 4 it represents the number of antennas systems available to the user during the measurements When you perform the measurements at all the points specified previously the system will switch range asking you to replace the antennas and redo the auto zero procedure Selectthenumber of ranges antennas to be measured 3 3 1 Measurement using wizard After the selection of the chamber spots and ranges the instrument will start the procedure to perform the auto zero required by the first set of antennas to be used The procedure to follow f
5. according to the moment in which you started the measurement and the number of frequencies you entered in the list 5 000000 MHz Sync in 12 s After the first measurement you ll see that before each frequency there is a synchronization delay 10 000000 MHz Sync in2s Ait 88 0 dB Abort As soon as the measurement ends you can save the data in a memory slot just like in a normal Standard measurement _ 40 USER S MANUAL SEMS lf you need you can start another measurement by selecting Meas again SEMS i Ready for Measuring Auto By pressing Auto you can begin a new measurement without reconnecting the two units However you can do this only for a fixed period of time see below The usage of this mode in a Wizard measurement works in a very similar way You can start a wizard zeroing sequence by selecting the list you programmed for the unconnected mode as the only range i Fully Zeroed g Ready for Measuring Auto Man PreQ Unc _4 USER S MANUAL SEMS Place the TX and RX units in the desired measurement spots and press the Unc button to enable the two units to synchronize their internal clock Note that you have to make this step while the 2 batteries are visible on the LCD display Remove Connections and start measuring Now 10s 30s Now you can remove the RS232 Wireless adapter from the RX unit you ll see the battery icon of the TX Unit that disappears close the door of t
6. al AppleiPhone _ 4 Filename PONEN Inside Chamber B folder you will find organized in subfolders relative to the antenna Range used all the measurement spots By selecting one of the SMR files the main window updates data with the one relative to the spot selected In addition a new window appears to allow easy navigation between the measurement spots a CA 4 Program Files EJ SEMS Software lt q Chamber B In the lower part of this window you can navigate through the work folder and select the desired chamber range in the top part of the window the measurement spots contained in the relative folder are shown You can select one of these spot and update the data shown on the main window by single clicking it _ 54 USER S MANUAL SEMS 4 4 Programming a frequencies list with List or Scan In the menu List of the SEMS PC Software it s possible programming a list of frequencies or a scanning and store them inside RX unit The picture below is the menu for programming List Frequency MHz Make Sca Li Start Freq sais Stop Freq 50 000 MHz Freq Step A Wiite Lis N of Points _ 0 _ Editable List Archive List lf you want use the Scanning you must select the start stop frequency and choose the step in percentage To make a table list you must click on the Write List button List Frequency MHz 0 042000 Makea 0 046305 Scan List Store
7. use the driver version that comes with the SEMS for the USB to Serial interface _50 USER S MANUAL SEMS 4 3 Retrieving a measurement Through the Tools menu you can access different functions to query the RX unit Es SEMS DefaulsMR IO S929 File Option Tools Retrieve single Measure Sorted By Update Firmware Set Of Measure Get Calk Report Measure e Single Measure will download a single measurement previously stored in the SEMS memory e Set of Measure will download data relative to a specific room data set e Get CalK Report will download data relative to the calibration procedure a TXT file with the report will be created Fw 1 15 04 06 10 0 0 010000 To 4 000000 Aetieve Retrieve Save By clicking on the desired element and then pressing Retrieve data will be downloaded from the SEMS internal memory and shown on the main window you will be asked to save an optional record file for latter reference 5 USER S MANUAL SEMS To retrieve a single measure access the option from the relative menu Tools gt Retrieve gt Single Measure and select the desired measure from the popup window Pw 1 15 04 06 10 Organize v New folder Downloads Name Date modified 00 01 OO00 To 4 000000 El Recent Places amp Chamber A 25 02 2011 11 52 a d Uninstall 25 02 2011 10 02 s Libraries a _ default SMR 14 12 2009 06 56 Documents a M
8. value of the axis and inserting the desired value EH 100 MH S00 MH e You can change the diagram data from Attenuation to Shielding Effectiveness from Options gt Diagram Style e Using the File menu you can save or load a record file or export data in CSV ASCII format e By clicking any point in the graph you can place a marker showing the attenuation of the closest measurement point if the box is Yellow the measurement point is below the instrument dynamic range 58 USER S MANUAL SEMS 4 6 Firmware upgrade Both the transmitter and the receiver firmware can be updated in the same way Be sure that the firmware files are located in the SEMS Software folder Recharge the unit batteries and connect it to the PC using RS232 cable Turn on the unit run the SEMS Software and set the COM port in the Option menu pressing Select Comm To verify the assignation of the COM port assigned by the PC check in the control panel System Hardware peripheral ports To start the firmware update procedure click the Tools button Update Firmware and then Update Rx or Update Tx Supposing you are updating the Rx unit the following screen will appear Make sure SEMS RX is OFF Then Turn it ON Turn off the receiver and then turn it on again lt will show the upgrade window w Formi afk Eems _Ax BIN FPGA SemsFw ldr Firmware Update Firmware _ 59 USER S MANUAL
9. K button This screenshot shows the request for the second attenuator Insert 2 X 30 dB 60 dB Attenuator Abort Connect the second attenuator and then press the OK button Repeat the same operation until you will use all the four 30 dB attenuators 4x30 dB 120 dB 235 USER S MANUAL SEMS When the calibration is done the following screenshot will be shown Calibration done Worst 0 70 dB 20 000 kHz 120 dB Show Cal The Worst parameter shows the worst accuracy over frequencies in this case is 0 7 dB at 20 000kHZz typically is a parameter that you can find in the technical specifications of the chamber 10 kHz 30MHz 1 0dB 30 MHz 300MHz 1 5dB The following image show the procedure set up Picture n 08 36 USER S MANUAL SEMS 3 7 Measurement with Rod antennas mod R1 When using Rod antennas in the zero setting and in the measurement phase it s absolutely necessary to connect the SEMS TX 10 dB attenuator already supplied before connecting the Rod antenna picture n 09 WARNING not using the attenuator can cause serious troubles to the system functionality Picture n 09 37a USER S MANUAL SEMS 3 9 Unconnected Mode Some measurement applications are not suited for the usage of the RS232 Wireless Bluetooth key or the Optical Link Mod LO An example could be a measurement in a shielded environment with no waveguides on technical panels For th
10. MPB S r l Tel 39 0641200744 RA MPB via Giacomo Peroni 400 402 Fax 39 0641200653 00131 Rome Italy info gruppompb com User s manual SEMS amp SEMS LIGHT Shielding Effectiveness Measurement System Updated to the software Version SEMS RX 1 32 SEMS TX 1 05 SEMS PC Utility 1 26 MPB 2014 ver 2_10 USER S MANUAL SEMS SAFETY NOTE Read before using the product MPB works to provide to its customers the best safety conditions available complying with the current safety standards The instrumentation described in this manual has been produced tested and left the factory in conditions that fully comply the European standards o maintain it in safe conditions and ensure the correct use these general instructions must be fully understood and applied before using the product The SEMS is designed for industrial environment and laboratories and should be used by skilled staff only MPB disclaims responsibility for a different use of the device USER S MANUAL SEMS Conformity Certificate in accordance with the ISO IEC 17050 1 This is to certify that the product SEMS SEMS LIGHT Measurement system of shielding effectiveness complies with the following European Standards Safety CEI EN 61010 1 2002 EMC EN 61326 1 2007 This product complies with the requirements of the Low Voltage Directive 2006 95 CE and with the EMC Directive 2004 108 CE MPB S r l USER S MANUAL SEMS in
11. Scans on SEMS 0 053604 0 056284 Save scan as Scl 0 059098 Scan List 0 062053 7 0 065156 ave scan as Sc2 0 068414 Start Freq 0 04 MHz 0 075426 Stop Freq 4 MHz Remove Save scan as c3 0 083157 Freq Step 5 Insert 0 087315 Made Save scan as Sc4 0 091681 a rd 0 101078 0 101078 write List 0 181522 v N of Points 96 C Editable List And then store it inside the RX Unit clicking on one of the four available memories _55 USER S MANUAL SEMS Otherwise if you want to make a frequencies list just click in the List and edit the frequency Edit Frequency Modify To make a frequencies List you must select the Insert button write the frequency value in the near area and push again the insert button Proceed in the same way to modify or remove a frequency value You must insert minimum three frequencies to enable the box below Store Scans on SEMS Save list as L1 Save list as Le Save list as La Proceed to save the data inside the RX unit clicking on one of the three button 56 USER S MANUAL SEMS Note During programming to enable the functions Unconnected Mode Make max 20 Frequencies HiDyn Mode Make max 30 Frequencies 257 USER S MANUAL SEMS 4 5 Working with the results e The color of the graphic can be changed from Options gt Graphic Color e The axis reference can be modified by double clicking the maximum and minimum
12. TENNA MODEL D1 Element 4 Element 3 lement 2 Frequency range Extended 200 300 0 USER S MANUAL SEMS 1 4 Receiver front panel In the Picture below n 03 is represented SEMS receiver front panel It has a display and a command keyboard RF in 50 Ohm N female connector Alphanumeric display Keyboard Power button Picture n 03 1 5 Transmitter front panel The SEMS transmitter Picture n 04 has no command button but only a power button and a led to indicate that the transmission is active since the commands are sent by the receiver using the wireless connection x RF out 50 Ohm N female connector Power button LED on when transmission is active Picture n 04 _Q USER S MANUAL SEMS 1 6 Receiver Transmitter rear panel The rear panels Picture n 05 are the same for both devices and upon them is possible to find the serial number the thread used for the tripod the battery charger connector and the RS232 interface for the wireless link M A EE GJ Picture n 05 RS232 Serial number Thread insert Battery charger connector Important note Always use the battery charger provided with the instrument to avoid serious damages to the devices and operator s injuries Important note The battery charger must be connected to both devices Tx and Rx turned off USER S MANUAL SEMS 1 7 Technical specifications Frequency range
13. When you start on the RX unit the display will show a SEMS a FW 1 32 27 03 14 HW Light WIZ Std Cal Stp The SEMS LIGHT has the same functions and performances than SEMS The only limit is on the max frequency until 96 MHz In the Stp menu it s possible upgrade the RX Unit through the activating code from SEMS LIGHT to SEMS so you can working until 300 MHz a SEMS i FW 1 32 27 03 14 HW Light BEEP Clear Code0 Note The activating Code is an option Mod Key 300 Please enter CODE Enter to confirm _47 USER S MANUAL SEMS After you unlock the SEMS LIGHT the display will show Code saved Turn the SEMS OFF then on again Abort And then you will be ready to measure until 300 MHz 48 USER S MANUAL SEMS 4 SEMS PC Utility software controls and functions 4 1 Installation 4 2 Insert the USB Drive that came along with your SEMS system into the PC you are installing the software to SEMS SWexe F Setup Application AP 9010 Launch the setup file SEMS SW exe and click YES in the pop up window Vista and Seven users only According to your computer settings SEMS SW Installer will have on screen instruction in different language X3 SEMS Software Installazione Benvenuto Benvenuto al programma di installazione di SEMS Software 1 22 E vivamente consigliato uscire da tutti i programmi Windows prima di continuare con questa installazione Se ci sono al
14. also the RS232 cable In sequence connect a The battery charger to the main power supply until the green Led b Put the Jack plug in the SEMS units When the red light is on the charge Is in progress At the end of the recharge the LED is green When the battery are totally empty the recharging time is approx of 4 hours Be careful The recharging time of each power supply is different because the electronic control of the tolerance about the total charge may be different This mean that the status time of the LED from red to green may be different ll USER S MANUAL SEMS 2 Operating principle 2 1 SEMS Receiver The block diagram a below represents the SEMS receiver Digital ki Attenuator gt Filters gt ADC gt Display RSP DSP Figure a First of all the RF signal received by the antenna is attenuated by the attenuator module to fit the level to the next modules specifications subsequently we can find the filters to select the bandwidth depending on the frequency settings Then the RF signal is converted by an ADC and is processed by the digital part with a RSP and a DSP the result will be shown on the display 2 2 SEMS Transmitter The block diagram below b represents the SEMS transmitter Digital Power RF CPU gt Doubler gt Di T The transmitting signal is generated using the DDS controlled by the CPU that receives the instructions from the receiver wireless interfac
15. connection fails keep in mind that after 17 minutes the TX Unit turns off automatically you will see the following screen Synchronizing Transmitter And after pressing OK Could not Sync Failed Is TX connected Abort In this case check the TX connection and if needed turn on the unit Then try again by pressing OK _44 USER S MANUAL SEMS 3 9 Prequiet Mode some shielded environments are naturally noisy The background noise of the environment can affect the quality of the measurement itself To avoid this the SEMS has a cleaning function called Prequiet Mode In the Prequiet Mode the SEMS RX modifies the working frequencies so that the environmental noise is kept out of the measurement points The Prequiet mode is available in both Wizard and Standard mode but it can t be used together with Unconnected mode In both cases you have to do the zeroing of the system then in the Meas menu you ll find the PreQ bution In Standard mode SEMS j Ready for Measuring Auto Man PreQ Unc And in Wizard mode Fully Zeroed Ready for Measuring Auto Man PreQ Unc 45 USER S MANUAL SEMS As soon as the quieting procedure finishes you can start the measurement Quieting Terminated Meas Show Cal Snif By pressing Meas and starting a measure the SEMS will automatically use the optimized frequency list _ 46 USER S MANUAL MPB SEMS 3 10 SEMS LIGHT
16. dex 1 General information Introduction System description Composition of the system and optional accessories Receiver front panel Transmitter front panel Receiver transmitter rear panel Technical specifications Battery recharge a k eee Cee Cee Cee M Ca ONOooOK WP ODO ODMH 2 1 SEMS receiver 2 2 SEMS transmitter 2 3 SEMS system 2 4 Power saving and recalibration 3 1 Turn on menu 3 2 Std Menu 3 2 1 Cal Menu 3 2 2 High Dynamic HiDyn 3 2 3 Show Menu 3 2 4 Meas Menu 3 2 5 Menu Sniff 3 3 WIZ Menu 3 3 1 Measurements using wizard STP Menu Measuring the shielding attenuation Calibration using Calkit Measurement with Rod antennas mod R1 8 Unconnected mode 3 9 Prequiet mode 3 10 SEMS Light 4 1 Installation 4 2 Connecting the instrument 4 3 Retrieving a measurement 4 4 Program a frequencies List with Scan or table List 4 5 Working with the results 4 6 Firmware upgrade USER S MANUAL SEMS 1 General information 1 1 Introduction SEMS is thought to comply the raising need to test and verify the shielding effectiveness of shielded environment in hospitals and industries This system allows to measure automatically with high speed and accuracy the attenuation value of the magnetic and electric field in shielded environments 1 2 System description The shielding effectiveness measurement system has a transmitter and a receiver both of th
17. e this signal is duplicated and amplified in order to achieve the necessary level to be transmitted by the transmitting antenna Figure b _12 USER S MANUAL SEMS 2 3 SEMS System The main purpose of the SEMS is to measure the shielding effectiveness in a shielded environment by measuring the attenuation of the electric or magnetic field The SEMS makes an a relative measure and not absolute We can briefly describe the operating principle as it follows The transmitter generates a RF signal and irradiates it through the antenna at a certain distance the receiver catches the signal with an equal antenna and measures the signal level If we move the receiver inside the shielded environment maintaining the same distance from the transmitter we will get a lower signal so we can consider the shielding attenuation the difference between the reduced and the Original signal D ZERO SETTING Distance for E the zeroing process i i Picture n 06 Example of zeroing with loop antennas 2 4 Power saving and recalibration The SEMS has an integrated timer in both RX and TX unit for two different reasons the TX automatically turns off after 17 min of idle to save the battery the RX unit after 15 min from the last zero setting suggests to recalibrate the SEMS by repeating the procedure si USER S MANUAL SEMS 3 System use and operations 3 1 Turn on menu By pressing the power button of the RX module the dev
18. em are provided with a pair of very small antennas to measure the magnetic and electric field attenuation Contrary to today s available systems that measure the shielding effectiveness on few frequency points SEMS allows to perform a complete test on the whole frequency ranges continuously Another improvement compared to the standard system is the synchronization component TX and RX are connected by a wireless system that allows to perform automatically the measurement minimizing the user s errors Picture n 01 SEMS System USER S MANUAL ewe mmo SEMS 1 3 Composition of the system and optional accessories SEMS KIT 1 SEMS LIGHT RX Unit 10KHz 300MHZz 4 Only until 96MHz TX Unit 10kHz 300MHz Biconical antennas Mod B1 60 300MHZz Rod antennas Mod R1 1 60MHz Loop antennas Mod L1 2 128MHz RS232 USB cable to download memory of the SEMS and for programming Antenna adapters N m N m 4 Woden trioode Mod TR 02 Hight adjustable Optical link Mod LO with 20m fiber Cal Kit 4 attenuators 30 dB each Software Mod SEMS SW Cal Kit Accredia Certificate v v y v v v v v v v v v v y v v v User s manual onto USB ke Standard Calibration Certificate SEMS STD 4 Option O hin p N ol Ss 6 E D b Loop Mod L 2 Rod Mod R1 Tripode Mod TR 02 A Dipole Mod D 1 Loop Leak Mod L 3 Picture n 02 USER S MANUAL SEMS TIPS TO HAVE THE BEST DYNAMIC WITH DIPOLE AN
19. for TX RX 10 kHz 300 MHz SEMS Light up to 96 MHz Resolution 10 Hz RF out TX module Zout 50 Q N fem Max output power typical 30 dBm RF in RX module Zin 50 Q N fem VSWR lt 1 2 Attenuator 0 20dB Max input power 110 dBuV Dynamic Range 120 dB IF bandwidth RX module 3 dB bandwidth 5 150Hz Attenuation measurement accuracy 10 kHz 30 MHz 1 0dB typical 30 MHz 300 MHz 1 5dB I O interface RS232 Wireless Buzzer SSC Tosetonattenuation level International standard compliance MIL Std 285 IEEE Std 299 EN 50147 1 NSA65 6 Operating temperature 0 40 C Battery Irreplaceable and rechargeable Li lon 6 h operating time Antennas Loop Mod L 1 Frequency range 2 128 MHz Diameter 30 cm Loop Mod L 2 Frequency range 10 kHz 4 MHz Diameter 30 cm Rood Mod R 1 Frequency range 1 60 MHz Adjustables on lenght Dipole Mod D 1 Frequency range 40 300 MHz Adjustable on extension Loop Mod L 3 Used for RF Leak Biconical Mod B1 Frequency range 60 300 MHz Width 35 cm Accessories Wooden Tripode Mod TR 02 A Adjustable in high Optical Link Mod LO With 20 m fiber Calibration Set Up and Measurement Programmable with the software Weight and dimensions Overall weight 9 4 kg Case dimensions 52x43x23cm Technical specifications may change without notice 10 USER S MANUAL SEMS 1 8 Battery recharge To recharge the equipments is necessary disconnect the RS232 wireless and
20. frequency point which shows lower noise floor is taken while the remaining two are discarded In this way now a new table same in number of point as the original one is created _18 USER S MANUAL SEMS You can at anytime stop the Best Dynamic function Pressing the Abort button will show the menu below SemsUnZeroed Calibration Aborted Above Minimum Show Cal Anyway you can view all the values of dynamic available for each frequency point with the command Show before to start the measuring a Sems Ready for Measuring Meas Show Cal Snif And after Dyn Sems Ready for Measuring Above Minimum L1 4 M1 4 H1 4 19 USER S MANUAL SEMS To view them one by one press the button NxFr Next frequency or HiPk highest Peak and NxPk next Peak than the one displayed Dynamic 9 900 to 126 000 TstF NxFr HiPk NxPk 20 USER S MANUAL SEMS 3 2 3 Show menu The show menu will provide the results of the measurements performed and previously stored To see the saved measurements press the Show button SEMS g Ready for Measuring Meas Show Cal Snif e g We will choose a measure stored in a memory named H1 4 a SEMS K Ready for Measuring Last L1 4 M1 4 H1 4 Then we recall the H1 memory SEMS Ready for Measuring s USER S MANUAL SEMS 1stF Shows the attenuation at the lower frequency of the selected scan
21. he shielded environment and start measuring You ll see a countdown starting from a value that can vary according to the moment in which you started the measurement and the number of frequencies you entered in the list 5 000000 MHz Syncini2s _42 USER S MANUAL SEMS After the first measurement you ll see that before each frequency there is a synchronization delay 10 000000 MHz Sync in 2 s Ait 88 0 dB Abort As soon as the measurement ends you ll see the usual Spot Done screen from Wizard mode where you can repeat the measurement ReDo or start measuring the next if there is one spot Next In both Standard and Wizard mode you have a limited time to make the measurements before reconnecting the RX and TX unit This time limit is used to avoid measurement errors imputable to long term clock delays The timer starts from the moment in which you press the Unc button After 14 minutes if you start a measurement you will be prompted to reconnect the TX and RX unit to recalibrate the internal clocks Re Sync Needed Connect RX TX then press OK Abort At this point you must reconnect the RS232 Wireless adapter wait for the steady green light to appear and then press OK _ 43 USER S MANUAL SEMS lf the connection is successful you ll see the following screen sync OK Remove Connections Now you are able to start the measurement the 14 minutes timer is restarted If the
22. ice will turn on to turn it off press the power button for at least 4 seconds Follow the same procedure for the TX module As soon as the device is turned on the display will show the following screenshot On the top right of the screen will appear a battery icon to show the charge status of the RX module then the TX connection on the top left will appear the TX device battery icon If the battery icon do not appear on the top left there isn t communication from the units Please check the configuration of the wireless Bluetooth Ind 3 5 page 32 SEMS FW 1 32 27 03 14 HW 2 NOTE As soon as the connection is established if the red led of the wireless devices blinks together with the yellow ones wait until the complete switching off of the first ones in order to let the devices synchronize and ensure the correct functioning 3 2 Std Menu By pressing the Std menu button this screenshot will appear SEMS j FW 1 32 27 03 14 Show Cal Then pressing the relative button allows the access to Show and Cal menu 14 USER S MANUAL SEMS 3 2 1 Cal Menu Cal menu is used to perform the system zeroing process Scan or List or the system calibration process Calk SEMS j Ready for Measuring Scan List Calk Scan performs the system zeroing process using the standard or customized frequency bands by pressing the scan button we will see the following screenshot where is possible to choose the defau
23. ill be still beeping but with a slower series of sounds The OFF button will take the sound off The sound mode status is reported on the top of the display in this menu BEEP ON and BEEP OFF The actual threshold is written on the right top of the screen in this example is 100 dB Clear With this function you can delete all the measure stored inside the RX unit WARNING ALL Measures Will be ERASED Abort Pressing OK E Memory cleared B No measure Left oe USER S MANUAL SEMS 3 5 Measuring the shielding attenuation 1 Place the receiver and the transmitter on the non conductive tripods height 120 cm and place them at a distance of 40 60 cm if you are using the loop antennas and 100 200 cm if you are using biconical or dipole ones 2 Connect the antennas upon the transmitter and receiver being careful to align them in a parallel way 3 Connect the wireless transducers to the RS232 port on the transmitter and the receiver turn on both devices and wait until the green blinking light stops and remains turned on and the two icons of the batteries become visible on the receivers display Is recommended to wait a few minutes before going on warm up 4 Perform the zeroing procedure by using the Cal button then select Scan or List for the desired frequencies other zeroing mode is available to improve the dynamic during measure See Chapter HiDyn 5 As soon as the zeroing procedure is over mo
24. in the first antennas system will reduce the spots for all the other systems e g if select 8 spots and measure just 3 pressing end will reduce to 3 the maximum number of spot per system But if we perform a measurement on all of the 8 spots then we will change antennas and then again we will press the end button after just 3 spots measured and all the 5 spots will be kept 81 USER S MANUAL SEMS 3 4 STP Menu SEMS has an internal buzzer that beeps every time that a customizable alarm threshold is exceeded To activate this function you have to press the Stp button in the main screenshot shown as you turn the instrument on SEMS FW 1 32 27 03 14 i HW 2 BEEP Clear and BEEP button BEEP OFF 100dB Use arrows for 10 dB step ON OFF Using the up and down arrows on the SEMS keyboard is possible to move the threshold to 10 dB to set a more fine value is possible to press the 1 and 1 buttons to increase or decrease the threshold to 1 dB By pressing the ON button the buzzer will be activated and during the measurements if the attenuation measured drops below the threshold the buzzer will produce an acoustic signal Warning This is a multifunction button It s used also for the HiDyn Function 220 USER S MANUAL SEMS While the measured value remains under the threshold the buzzer will produce a fast series of beeps when the measured value returns over the threshold the buzzer w
25. ing the zero step is be able to understand if there is some noise radio frequency disturbance at the same frequencies of the test that could compromise the dynamic of the measure Its possible make a scanning in automatic or manual mode just press the Stp menu like show below SEMS a FW 1 32 27 03 14 And after the Beep button BEEPON 100dB Use arrows for 10 dB step 1 ON OFF BEEP ON OFF enables or disables the manual or automatic execution of the HiDyn Function With the arrows is possible to set the threshold of the dynamics during the test 17 USER S MANUAL SEMS lf for example before zero procedure we set this value at 100 dB with Beep ON the operator will know immediately if this threshold of dynamic will be available for the measure 9 900001 MHz Dynamic 85 dB Above Minimum Abort In this example the operator will know immediately how much dynamic will be available during the measure at the frequency of 9 900001 MHZ Confirming with OK the SEMS Receiver will proceed at the next frequency through the activation of the Best Dynamic function like below For every frequency present in the table two additional side frequencies are added the lower is f 0 99 1 and the higher is f 1 01 1 All the frequencies are then tuned on RX unit while the TX unit is kept OFF and for each the noise floor is recorded At the end of this step for each triplet the
26. lt bands L_Lo L_Hi e Bic or the user s customized bands Sc1 Sc2 Sc3 and Sc4 pressing the User button customized bands are programmed with the SEMS PC_ Utility software K SEMS a Ready for Measuring L Lo LH Bic User The choice of the button to press depends on the different types of antennas L_Lo Loop antennas Mod L2 L Hi Loop antennas Mod L1 Bic Biconical antennas Mod B1 By pressing the User button will appear the screenshot to choose the memorized band _15 USER S MANUAL SEMS SEMS j Ready for Measuring Sct Sc2 Sco Sc4 List performs the system zeroing process using the default or programmable frequency list by pressing the list button will appear a new menu where you can select the default frequency list DFT or three programmable lists L1 L2 e L3 SEMS a Ready for Measuring CalK performs the system calibration process using the four 30 dB attenuators optional accessories CAL KIT NOTE This procedure needs a wireless connection between TX and RX you can control the connection with the battery status on the left top of the screen of RX will be visible only if the connection has been successful Note Never use the CalKit procedure with the charger connected When the zeroing procedure ends the following menu will appear 16 USER S MANUAL SEMS 3 2 2 HiDyn is a special function available only for a number max of 30 frequencies With this mode the operator dur
27. or list NxFr Shows the attenuation on the next frequency HiPk Shows the minimum attenuation on the whole scan or list NxPk Shows the first relative minimum of attenuation from the current frequency Scan 60 000 to 300 000 tstF NxFr HiPk NxPk By pressing the Last button you will see the results of the last measurement performed by pressing the remaining three buttons you can see the other stored data up to 4 for each button As soon as you choose the measure to see you can analyze frequency by frequency the measured attenuation The frequencies are always expressed in MHz By pressing the ESC button you can go back to the previous menu 3 2 4 Meas menu You can find the Meas command in the Std menu but it will appear only when the system is zeroed using the Cal command described in the previous paragraph 3 2 1 of this manual D SEMS j Ready for Measuring Meas Show Cal Snif 0 USER S MANUAL SEMS The command will perform a measurement of attenuation automatically Auto or manually Man Ki Fully Zeroed a Ready for Measuring Auto Man PreQ Unc Using the automatic mode you can choose if you want the measurement procedure to start immediately Now or with a fixed time delay 10s 30s e 60s SEMS 7 Ready for Measuring lf you use a manual measurement you will use the commands Prev measure of the previous frequency Next measure of the next frequency Redo in order to measu
28. or this purpose is exactly the same of the auto zero calibration as described in chapter 3 2 1 of this manual Choose the range for Antenna 1 Zero Scan List Selecting Scan we can choose to zeroing the system using the default mode L_ Lo L_Hi BIC or to use the span programmable by the SEMS PC_ Utility software mode User _ 28 USER S MANUAL SEMS Choose the range for Antenna 1 Zero L Lo L Hi Bic As soon as the zeroing procedure is completed the measurement screenshot will appear on the display In this screenshot the user has to decide how to perform the measurements automatically Auto or manually Man i Fully Zeroed a Ready for Measuring Auto Man PreQ Choosing the automatic mode we can make it start immediately Now or set a fixed time countdown before starting 10s 30s e 60s i Fully Zeroed Ready for Measuring 10s _29 USER S MANUAL SEMS When the manual mode is selected the user has to choose the commands Prev to measure the previous frequency Next for the next frequency Redo to repeat the measurement on the current frequency or Abort to quit 60 000000 MHz Rbw 40 HZ Att 65 dB Prev Next Redo Abort After this choice the measurement will be performed and will appear the wizard management screenshot to control the status of the procedure Mm ChASp1 2R1 2 spot Done 115 7 dB Next Redo In this screenshot
29. ose kind of applications there s a specific operating mode called Unconnected In this operating mode during the measurement there s no need of a connection between the RX and TX unit To use this operating mode the SEMS RX must be programmed through the SEMS Software with a specific list of no more than 20 frequencies The list can be saved in any of the three L1 3 slots The Unconnected mode can be used either in the Wizard or in the Standard mode To use it in Standard mode select Std from the home menu SEMS FW 1 31 27 03 14 HW 2 Press Cal then List and then select the list where you saved the frequencies for the unconnected mode Proceed with the zeroing sequence as you would do for a normal measurement 3g USER S MANUAL SEMS As soon as the zeroing sequence ends press Meas a SEMS i Ready for Measuring Auto Man PreQ Unc Place the TX and RX units in the desired measurement spot and press the Unc button to enable the two units to synchronize their internal clock Note that you have to make this step while the 2 batteries are visible on the LCD display Remove Connections and start measuring Now 10s 30s Now you can remove the RS232 Wireless adapter from the RX unit you ll see the battery icon of the TX Unit that disappears close the door of the shielded environment and start measuring _ 39 USER S MANUAL SEMS You ll see a countdown starting from a value that can vary
30. re the current frequency and Abort to end the measurement To measure the electrical component we recommend to use Rod Antennas Mod R 1 completely open or the Biconical antennas Mod B 1 on RX and TX unit For the magnetic field you can use the pairs of Loop Antennas L 1 or L 2 60 000000 MHz Rbow 40 Hz Att 56 dB Prev Next Redo Abort 207 USER S MANUAL SEMS When the measurement is finished the display will show the memory slot to store the acquired data you can choose one of the 4 memories for each frequency range Frequency Range from 0 01 to 2 MHz memory L 1 L 2 L 3 e L 4 Frequency Range from 2 to 60 MHz memory M 1 M 2 M 3 e M 4 Frequency Range from 60 to 300 MHz memory H 1 H 2 H 3 e H 4 It s possible to find some measure stored in a different slot because the last frequency of the list is on overlap with another E g at 60 MHz you could have a slot of Mor H Example Save request in the memory slots from 60 300 MHz range Scan Terminated Press 1 4 to save or Escape By pressing the H 1 button the data will be stored and you will go back to the starting screenshot 3 2 5 Snif Menu From this menu you can measure the shielding effectiveness on a single frequency for leak sniffing purposes 137 520975 MHz RBW 40Hz to 137 520975 Next Prev Press Next or Prev to select the desired working frequency for the sniffer 24 USER S MANUAL MPB SEMS 144 210005 MHz
31. tri programmi in esecuzione prego premere Annulla e chiudere questi programmi prima di rilanciare l installazione Altrimenti premere Avanti per continuare Follow the instructions on screen to complete the installation Be carefull For the OS Windows 7 and upper you must launch the SEMS SW with all administrator permission 49 USER S MANUAL SEMS M r 4 2 Connecting the instrument Plug the USB to Serial adapter to your computer Under Windows Seven press Start go in Control Panel then Hardware and sound then Device Manager Under Windows XP press Start go in Control Panel then System then Hardware then Device Manager Take note of the COM port where the USB to Serial interface is mapped I E COMS3 gt og IDE ATA ATAPI controllers 5 Imaging devices gt Keyboards gt F Mice and other pointing devices i Monitors 5 E Network AT Portable A F Processors gt Sound video and game controllers JE System devices gt g Universal Serial Bus controllers Connect the SEMS RX to the RS232 connector and turn on the unit Start the SEMS SW from the desktop shortcut or your start menu Open the Option menu click on Select Comm and in the new window insert the number you ve taken note before Press the Enter key on your keyboard to confirm The program should be now correctly configured to communicate with the SEMS RX unit Note Please
32. usic Pictures E Videos jE Computer ae ESE L__Fetieve Sweaspe eed o Save Hide Folders Clicking retrieve will update data currently shown on the screen with the retrieved measure and allows you to save the measure as a record file SMR To correlate the memory slot to the index of the measure you can refer to the following table Memory Slot To consult this measure again just use the Load button from the File menu and select the relative record file 5 USER S MANUAL SEMS Retrieving a set of measures works in a similar fashion To retrieve all data relative to a chamber you have to click on Retrieve gt Set of Measure from the Tools menu then select the dataset from the pop up window B Retrieve Fw 1 15 04 06 10 Retrieving Chamber B Range 1 Spot 1 Chamber Range 1 Measures 1 Chamber D Range Measures 3 Retrieve In this example we are retrieving data from Chamber B Range 1 As you can see the window is showing the number of measures relative to each set in this case 4 different spots 53 USER S MANUAL SEMS As the download finishes you are not prompted to save your data this is because SEMS automatically saves sets of measures inside its own work folder To consult all data inherent to the chamber just click File gt Load a Chamber B d Uninstall _ default SMR Videos 1 Computer amp Local Disk C
33. ve the receiver into or out the shielded environment near the first measurement point and the transmitter in the opposite side trying to maintain the same distance used during the zeroing plus the shield tickness 6 Measure the attenuation pressing the Meas Auto and 10s button to allow the user to walk away from the measuring system 7 As the measure ends save the result in a memory 8 Repeat the 5 6 and 7 steps for each measurement spot 9 After all the spots are measured download the results on a PC using SEMS PC Utility software provided with the product Configuration of the Key wireless Bluetooth MASTER lt lt ON OFF gt gt 4 OFF 115K ON 9600 ON 3 AUTO MASTER 2 AUTO DISCOVER 1 FACTORY DEFAULTS SLAVE lt lt ON OFF gt gt ON 4 OFF 115K ON 9600 OFF 3 AUTO MASTER ON 2 AUTO DISCOVER OFF 1 FACTORY DEFAULTS 234 USER S MANUAL SEMS 3 6 Calibration using Calkit The SEMS needs a periodic linear calibration the Cal Kit can easily and precisely accomplish this purpose If required the Cal Kit can be provided with Accredia calibration To start the calibration procedure press Std Cal button from the main menu and press CalK button then calibration can be performed following the instructions on the display This screenshot shows the request for the 30 dB attenuator Insert 30 dB Attenuator HW 2 Abort Connect the Tx and Rx using the 30 dB attenuator and press the O

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