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1. Table of contents 1 Safety PG AUNT Ih Sree E E eee eer 3 2 CASS Pell Hae ARRE 3 3 General product description sss sees eee 4 3 1 Description of device specific features ss sesa svvsvvsssssvvssrzss ss anne ii 4 3 2 Designation Of the functional elerments aiar anmerken 5 e Interfaces attne Unit ciisici nda aa aa R 6 3 3 1 Pin configuration of the 6 pole user interface IP65 housing sees eee eee eee eee eee 6 3 3 2 Pin configuration of the 20 pole user interface PCB version i 6 4 Putting the unit into operalion sees eee eee nennen 8 4 1 Initial state of the unit after Starting nennen nennen anne nennen 8 4 2 Memory selection at the user interface ii 8 5 Settings atthe terminal piede ae 8 6 Settings AL ONS MTN area een 10 6 1 Entering software COMMMANS T 10 6 1 1 Displaying the version number iii 10 6 1 2 Displaying the serial number of the unit i 10 6 1 3 Displaying the command by means Of echo iii 10 6 1 4 Setting the OUtPUt MOUS u ee ee len san 11 6 1 5 Displaying the number of the Current Memory asses sees ii 11 6 1 6 Selecting a memory software selection i 11 6 1 7 Selecting the memory set by the hardware sees eee ee eee neee eee eee 11 6 1 8 Displaying the analogue measuring signal RSSI input level eee eee i 11 6 1 9 Setting SoftWare MANGSMAKE T 12 6 1 10 Resetting the uni
2. 4 40 LF frequency response at 600 Ohm relating to 1 kHz modulation frequency Table 10 2 Technical data WZ LSA 4 3 17 Circuit diagrams 11 Circuit diagrams 11 1 Standard wiring of the user interface UB_IN J2 1 um _ 12V GND J2 2 NF_OUT J2 3 GND J2 4 RSSI J2 5 GND J2 6 100n UB_IN GND RSSI RX_BB AF INT VPP DIL7 PCLOCK DIL8 PDATA RS232_OUT RS232_IN user interface TL RS232 interface R2 3 5 GND V C2 C2 GND lk 4 al MAX232ACSE T 100n 5V ET ML LL da da dad aada da dodu dn dn BSR OPEN FC GE GE GE EE GEG GE GE GEE GE GE GE GH GH HE GHEE COONMOURWN O z ll 1k5 Figure 11 1 The user interface of the WZ LSA 4 3 is wired with a interface for the parameterisation of the software via a driver module MAX232 A light emitting diode LED with series resistor for the error indication is connected at the output ERROR 11 2 User interface at data transmission UB_IN J2 1 GND J2 2 NF_OUT J2 3 GND J2 4 H AF_OUT CI Modem AF_IN RSSI J2 5 GND J2 6 I GND RXC UB_IN GND RSSI RX_BB AF_INT VPP_MCLR DIL PCLOCK DIL8 PDATA RS232_OUT LM2580 A G OO O Ln ELA G user interface De L 1 c dio 3 8 O pa 2 E g C CC C C C C Can En E En cee Can Cm En Ea Can Can SE LRR LT LT bd 2k2 Figure 11 2 In addition to the standard wiring of the us
3. Format empfangen IV Uberlange Zeilen im Terminalfenster umbrechen Abbrechen After confirming the options the terminal program is ready to send and receive When using another terminal program the settings have to be made like explained in the example of the Hyperterminal program Settings at the unit 6 Settings at the unit 6 1 Entering software commands Command Range of Description syntax values EEE Displaying the version number Displaying the serial number of the unit Echo of the commands X 0 gt no echo X 1 gt echo x 1 0 Output mode X 0 gt normal X 1 gt extended service command 0 X 0 511 Software selection selecting the memory and the appropriate RX channel Hardware selection selection of the memories depends on the current 6 1 7 hardware setting Outputting current memory number service command 0 1023 Output of the analogue measuring signal RSSI input level Xon Xoff protocol X 0 gt deactivating X 1 gt activating Reset to factory setting Table 6 1 Short overview command syntax Please use the short overview for the following command explanations A gradual execution ofthe given examples accelerates the process of learning all the commands quickly 6 1 1 Displaying the version number Displaying the name of the unit and the version WZ LSA 4 3 V2 00 01 Short description of the version Product family Model Version num
4. LED is adjustable by means of parameter factory setting 1 3 s Service and repair 9 Service and repair In case the message ERROR appears repeatedly the manufacturer recommends to proceed as follows 1 6 7 9 13 14 15 16 17 18 19 20 21 22 23 24 25 26 Use options as described in chapter 5 Settings at the terminal program In the menu Transmission in the hyperterminal select the point Text aufzeichnen Select text file or create new text file Activating the extended output mode E1 v 76 Process the commands of the points 6 to 26 step by step V N ENTER SM Ui ENTER Ueo Ue1 Ue2 Ue3 Ue4 Ue5 Uep Ue7 MD MR V ENTER ENTER ENTER ENTER ENTER ENTER ENTER ENTER ENTER ENTER ENTER ENTER ENTER Provoking of the error messages that are appearing repeatedly Send the text file to the customer service of the manufacturer bertragung Datei senden Datei empfangen Textdatei senden 4m Drucker aufzeichnen Datei aufzeichnen ee Ordner C temp Datei CN Durchsuchen srai The content of the terminal window is registered in the text file after terminating the program OK is displayed The unit WZ LSA may only be repaired by the manufacturer In case the unit has a malfunction please see chapter 8 Troubleshooting In case the malfunction is not described please contact the manufacturer and sen
5. Stopp 1 S Xoff ASCII HEX 0x13 Elusssteuerung AERAN 1 The ASCII HEX values can be changed via software Settings at the terminal program 4 Click on the tab Eigenschaften 5 Select Einstellungen 6 Click on the button ASCII Konfiguration 7 In the options window ASCII Konfiguration select the following ASCII Versand ASCII transmission Gesendete Zeilen enden mit Eingegebene Zeichen lokal Zeilenverz gerung 0 ms Zeichenverz gerung 2 ms ASCII Empfang ASCII reception Beim Empfang Zeilenvorschub Uberlange Zeilen im Verbinder mit Einstellungen Bele der Funktions Pfeil und Strg T asten f r L Windows Riicktaste sendet Strg H Entf Strg H Leerzeichen Strg H Emulation Autom Erkenn lt Telnetterminalkennung ANSI Termmalkonfiauration Zeilen im Bildlaufpuffer 500 T Akustisches Signal beim Verbinden oder Trennen bersetzung der Eingangsdaten ASCIl Konfiguration ASCII Konfiguration 2 x r Einstellungen f r den ASCII Versand IV Gesendete Zeilen enden mit Zeilenvorschub IV Eingegebene Zeichen lokal ausgeben lokales Echo fo Millisekunden fe Millisekunden r Einstellungen f r den ASCII Empfang Zeilenverzogerung Zeichenyerzogerung IV Beim Empfang Zeilenvorschub am Zeilenende anh ngen T Eingangsdaten im 7 Bit ASCII
6. ee III TINTI receiver NF data output receiver NF voice output T P scatenato UU 222 Figure 12 1 19 Time lapse diagrams 12 2 Typ time response for receive mode as function of the channel receiver HF second channel 130 dBm receiver NF data output receiver NF voice output Figure 12 2 12 3 Typ RSSI response over input level and temperature 3 5 2 5 e 20 C 25 C A 60 C RSSI level in V N 1 5 0 5 130 120 110 105 100 95 90 85 80 75 70 65 60 50 input level in dBm Figure 12 3 20 Time lapse diagrams 12 4 Typ frequency response of the receiver data 775 mV relative level in dB a 20 25 30 35 Nn on oo co oo oo oo 9 oo o N a KR 6 n o o OOO SSC CD CD CD OD o o 5 KN GH HK GS frequency in kHz Figure 12 4 Frequency response at 2 4 kHz frequency deviation at 775 mV at data output 21 13 Dimensions E E N 94 mm 4 y 89 9 mm x i 69 3 mm A xz az E E E E g E E E ci E wo N D FMN communications GmbH WZ LSA 4 3 P 280x xxxx V7 00001 z C NN E a Y y er gt E 3 5 m 85 5 mm E LO La N Lo Fi
7. indi RSSI voltage 1023 indicated value RSSI Determine the input level in dBm by means of figure 12 3 Typ RSSI response over input level and tem perature Settings at the unit Maintenance 6 1 9 Setting software handshake Deactivating protocol Xon Xoff no protocol Fe OK ENTER 6 1 10 Resetting the unit to factory setting Bam On the factory setting of the unit Foe see 4 1 Initial state of the unit after starting 6 2 Factory setting Waiting time for error outputs PIN 20 ERROR w 1 3s Parameter change possible by the Error output delay w x 10 2 ms manufacturer W HIGH LOW 10 2 ms Debounce time delay selection line x 5 12 ms Parameter change possible by the manufacturer Changes in state at the selection lines lt than x ms are not recognized as signal change Output mode Table 6 2 Default values of the factory setting 7 Maintenance The unit can be operated without maintenance Troubleshooting 8 Troubleshooting 8 1 Outputs in normal output mode The WZ LSA unit is connected with the terminal program by means of a serial interface Output Description S O Command is valid and was executed correctly ERROR Command is valid but could not be executed correctly CMD ERROR Command is invalid Table 8 1 Output mode normal E0 8 2 Outputs in extended output mode The WZ LSA unit is connected with the terminal program by means of a serial interface CES lms H
8. E oe oommandi vana e executed conecty cuneo eonmandis maia Bor __ Programming chanel successa Table 8 2 Output mode extended E1 see 8 4 Explaining the error code in extended output mode 8 3 Information regarding troubleshooting An LED with series resistor can be connected at the output ERROR 19 of the user interface for displaying error conditions The output signal is LOW in case of an error The ERROR output is activated for 1 3 seconds factory setting la RX programming faulty ERROR see 9 Service and repair Ib Memory contains a faulty parameter ERROR see 9 Service and repair T The operating time for error outputs can be set by means of parameters factory setting 1 3 s Troubleshooting 8 4 Explaining the error code in extended output mode For troubleshooting inform the customer service of the manufacturer of the displayed output with the error code The customer service will give you a specified instruction to clear the fault CLH CTH RS232 interface Frequency programming Error at frequency programming on active LOW Remedy Programm correct values Parameter memory OA E E Fame mem OOS SS Parameter memory Memory in the parameter memory not found on active LOW 1F Memory in the parameter memory not found off Input value bigger than existing entries Table 8 3 Short overview of error messages of the unit D The waiting time for error outputs ERROR
9. ance of 50 Ohm e The manufacturer recommends to mount devices in PCB version into a metal housing e Corresponding mechanisms are to be used for the detection of single bit errors during a data transmission e g protocol with creation of check sum Information regarding the used trademarks Microsoft and Windows are registered trademarks of the Microsoft Corporation All other trademarks and product names are trademarks or registered trademarks of the relevant companies Copyright All rights reserved Duplication of this user manual or parts thereof by any reproduction method whatsoever is not permitted without prior permission of the manufacturer Amendments may be published without prior notification Notwithstanding the above declaration the manufacturer accepts no liability for errors in these instructions or their consequences General product description 3 General product description 3 1 Description of device specific features The unit WZ LSA 4 3 is a light signalling receiver with synthesizer which has been designed for data as well as for voice operation in the 4 m band Because of its compactness it is suitable for the integration into data systems where it depends on high data rates over greater distances Data rates up to 9600 bps are possible in connection with a GMSK modem and up to 2400 bps by means of a FFSK modem The unit complies with the requirements of the VDV guideline Verband Deutscher Verkehrsunter
10. ber e g V2 00 6 1 2 Displaying the serial number of the unit Displaying the serial number of the unit SN 0000000080000001 6 1 3 Displaying the command by means of echo An entered command is sent back to the PC interface by the unit for the control of the input OK Settings at the unit 6 1 4 Setting the output mode Activating the extended output mode K anca OK see 8 2 Outputs in the extended output mode Activating the normal output mode 2E0 u OK see 8 1 Outputs in normal output mode 6 1 5 Displaying the number of the current memory Setting the memory 2 by means of the selection switch SM enter Memory 00002 H see 4 2 Memory selection at the user interface displaying the memory number The displayed H in this output indicates that the current memory was set by means of hardware selection In case of software selection an S appears in the output 6 1 6 Selecting a memory software selection As a check Displaying the memory number Memory 00003 S 6 1 7 Selecting the memory set by the hardware see 4 Putting the unit into operation As a check Displaying the memory number Memory 00002 H 6 1 8 Displaying the analogue measuring signal RSSI input level For determining the input level in dBm proceed as follows Inquire the indicated value RSSI AO enter AO RSSI 00512 For determining the input level in dBm proceed as follows Calculate the RSSI voltage in volt 48V
11. d him a short description of the malfunction Please use the overview at the beginning of this chapter to specify the description Errors may only be removed by authorised specialists Technical data 10 Technical data 10 1 Scope of delivery e unit WZ LSA 4 3 e configuration list If not given otherwise the limits of the ETSI EN 300 113 and ETSI EN 301 489 apply HF modes Simplex semiduplex Channel spacing 20 kHz Type of modulation F1D G1D F2D G2D Interfaces Housing IP65 PCB version Antenna connection TNC socket 2 pole SIL connector Power supply LF socket U 79 U 6 pole SIL connector LF RSSI output LF socket U 79 U 6 pole SIL connector User interface 20 pole SIL connector HF channel setting via DIL switch RS232 interface Memories 512 Technical ta generat romans Tas Typial valve Max value resne Tans oree Omensons sang verso cowan sxoseo Wenn ce ven mon wear nenn von LT en aeaaee I 86 me Sem __ se me swe H HH H H sv G H sen HT G som H HTS Table 10 1 General technical data Technical data 10 2 Technical data WZ LSA 4 3 Bla 102 102 dBm 107 107 dBm 110 tom Adjacent channel selection channel selection 70 7008 72 7208 75 750 Spurious emission emission 60 60dBm LF voltage at 600 aa at 85 dBm HF level 2 1 kHz deviation Distortion factor at 600 Ohm at 85 dBm EEE 2 1 kHz deviation cae 2 20
12. eiver analogue Output NF filter analogue gt Input see PIN 12 Memory selection bit 6 digital valency 2 see also chapter 4 2 Memory selection at the user interface General product description sal Function inerorwiing Description Input digital see PIN 12 Memory selection bit 7 valency 2 see also chapter 4 2 Memory selec tion at the user interface RS232_OUT a Data output to the serial PC interface log level see table 3 1 S co Output active HIGH ae On F 46 N o Data input from the serial PC interface log level see table 3 1 Input active microprocessor RS232_IN HIGH C see PIN 12 Memory selection bit 8 valency 2 see also chapter 4 2 Memory selec tion at the user interface Memory selection bit 0 valency 2 LSB see also chapter 4 2 Memory selection at the user interface log level see table 3 1 a Input digital N Input digital microprocessor N Input digital gt Input digital see PIN 12 Memory selection bit 2 valency 2 see also chapter 4 2 Memory selec tion at the user interface see PIN 12 Memory selection bit 3 valency 2 see also chapter 4 2 Memory selec tion at the user interface see PIN 12 Memory selection bit 4 valency 27 see also chapter 4 2 Memory selec tion at the user interface see PIN 12 oa Inpu
13. er interface of the WZ LSA 4 3 a modem with integrated FFSK or GMSK modulation can be connected at the data transmission The modem is the interface to a microcontroller or to a computer 18 Circuit diagrams Time lapse diagrams 11 3 User interface at speech transmission lt 12V 7 5V UB_IN JP cho C Hosv GND 422 a T 1 E 5 NE OUT J2 3 8 g GND J2 4 Il RSSI 25 sN GND J2 6 n 1M386 M1 G a 100n Akm g gt SOLE loudspeaker usin Jia on ua _ glav RSSI J1 3 m RX BB vd AFINT J1 5 U VPP_MCLR J1 6 D DIL7PCLOCK J1 7 DIL8 PDATA J1 8 X RS232_OUT J1 9 Ss RS232_IN J1 10 DILS 1 11 DIL 31 12 L a a DIL2 31 13 DIL3 31 14 SI 31 18 voltmeter DIL6 J1 17 or WBZ Den GND 31 20 LoS CH LM258D me field strength output Figure 11 3 In addition to the standard wiring of the user interface of the WZ LSA 4 3 a loudspeaker can be connected for the speech transmission A voltmeter at the output RSSI is used for measuring the field strength 12 Time lapse diagrams of the unit 12 1 Typ time response for receive mode as function of the received signal approx 24 ms approx 24 ms 60 dBm 4l 4 receiver HF first channel 130 dBm 4 ca 3 V il SS a alaa niin lai aiai RSSI
14. gure 13 1 Dimensions PCB version 125 mm FMN communications GmbH WZ LSA 4 3 G 280x xxxx V7 00001 x Figure 13 2 Dimensions in IP65 housing 22 Conformity Glossary 14 Conformity Herewith the FMN communications GmbH declares that the unit WZ LSA 4 3 complies with the essential requirements and the other relevant provisions of the directive 1999 5 EG R amp TTE directive The unit WZ LSA 4 3 can be operated in the countries of the European Union EU Outside of the EU the national regulations of the respective country apply The complete declaration of conformity can be downloaded in the Internet under http www fmncom com 15 Glossary 4 m band Mobile radio 4 m band private mobile BOS radio marine radio service 68 MHz 87 5 MHz ASCII American Standard Code for Information Interchange Download Programmes or files are transferred to the radio unit during a download EEPROM Electrical Eraseable PROM ETS European Telecommunication Standard LED Light Emitting Diode LSA Light Signalling Receiver S Least Significant Bit MSB Most Significant Bit RS232 Recommanded Standard 232 standardised serial interface RSSI Receiver Signal Strength Indicator acquisition of the radio receiving field strength Unidirectional data transmission from transmitter to receiver Software handshake Communication protocol that controls the data flow over the serial interface between computer and modem Contro
15. ircuits are given 4 1 Initial state of the unit after starting After starting the unit the set memory corresponds to the selected switch position DIL1 DIL9 The other parameters correspond to the delivery status of the unit The switch DILO is reserved and may not be changed 4 2 Memory selection at the user interface The WZ LSA 4 3 has 512 memories 0 511 The memory to be used for the operation is selected over the switch DIL1 DIL9 see configuration list The selection of the memory can also be effected by the wiring of the inputs PIN 7 8 11 17 with DIP switches or by the connection of the inputs with the outputs of a microcontroller The switches DIL1 to DIL9 have to be set to the memory 511 all DIP switches to OFF 5 Settings at the terminal program The parameterisation can be carried out with any terminal program The manufacturer recommends to use the program Hyperterminal from Microsoft Windows 1 Start program Hyperterminal 2 Setthe COM Interface of the computer to xl which the WZ LSA unit is connected B Funkmodul Geben Sie die Rufnummer ein die gew hlt werden soll Land Region Deutschland 49 v Drtskennzahl Rufnummer Verbinden ber n 3 Make the following settings Data rate 9600 Baud Bits pro Sekunde 3500 Data bits 8 Bit sal Parity keine Datenbits js lt Stop bits 1 Bit Flow control Xon Xoff Paritat Keine Xon ASCII HEX 0x11
16. l characters Xon ASCII HEX 0x11 Xoff ASCII HEX 0x13 that are added to the data stream are used to stop or start the data flow VDV Verband Deutscher Verkehrsunternehmen Association of German transportation companies 23 For the protection of the environment Printed on paper bleached without chlorine with a maximum waste paper content of 50 LS FMN communications GmbH Grimmelallee 4 99734 Nordhausen Germany P O Box 10 04 65 99724 Nordhausen Germany Phone 49 36 31 56 34 41 Fax 49 36 31 56 32 24 Email info fmn de Internet http www fmncom com Subject to change WZ LSA 4 3 8201 3 0070 01 Edition 07 07 1112 0928
17. nehmen Association of German transportation companies and may be used for applications of this type anytime Numerous functions are part of the advanced features of the unit WZ LSA e Settings over an extended command interpreter by means of terminal program e 512 memories whose parameters are adjustable separately via software e Selecting the memories by means of hardware or software e Debounce time for hardware selection lines The time can be adjusted via software e Displaying the analogue RSSI value field strength value via a terminal program The measuring signal of the analogue RSSI value is available at the user interface e Displaying of error conditions of the unit The time of the display is adjustable via software An LED with series resistor can e g be connected at the user interface You get a detailed description in chapter 8 3 Information regarding troubleshooting e File download from PC to the WZ LSA unit for setting the parameters e File upload from the WZ LSA unit to the PC for displaying the parameters by means of terminal program e File download from the PC to the WZ LSA unit for loading new WZ LSA software Adjustable parameters of the program software e Setting the output mode to normal or extended e Setting the software handshakes to Xon Xoff or NO e Displaying the input instructions by means of command echo e Setting the RS232 baud rate from 1 2 kBaud to 115 kBaud e Resetting the WZ LSA u
18. nit to factory setting e Setting the waiting time of the output ERROR of the user interface General product description 3 2 Designation of the functional elements antenna connection GND DIL switch DIL 10 PINS A PIN 5 PIN 1 PIN 2 PIN 20 PIN 6 PIN 2 PIN 1 PIN 19 6 pole 20 pole user interface user interface Figure 3 1 Designation of the functional elements PCB version antenna connection TNC socket L ae NF socket U 79 U Figure 3 2 Designation of the 6 pole user interface IP65 housing General product description 3 3 Interfaces at the unit 3 3 1 PIN configuration of the 6 pole user interface IP65 housing mll Funston ensa Renan T N UB_IN voltage stabilization Voltage supply 9 15 VDC CT OC E I Output NF filter Demodulated NF signal without analogue DC voltage components DC decoupled a Zn Output receiver Signal strength the received field strength analogue can be determined by measuring the analogue voltage Table 3 1 3 3 2 PIN configuration of the 20 pole user interface PCB version voltage stabilization Output i Signal strength the received signal strength analogue can be determined by measuring the analogue voltage Output rec
19. t digital a D Input digital pere Input digital Memory selection bit 5 valency 2 see also chapter 4 2 Memory selec tion at the user interface UB_microprocessor Voltage supply for external modules signal le EB vel 5 VDC 5 without load 4 5 VDC 5 at Output s Output digital ee EEE US T GND Ground L Ground leads for alll inputs and outputs A level converter 6 g MAX232 can be connected to these pins A data exchange to the serial PC interface can be i _ established microcontroller max load of 5 mA This output conducts for approx 2 seconds LOW level after faulty actions rest state HIGH signal state LOW for approx 2 seconds 1 2 see PIN 12 Memory selection bit 1 valency 2 see also chapter 4 2 Memory selec tion at the user interface 2 Connect the output of the level converter to be connected with PIN 2 RXD at 9 pole interface or with PIN 3 RXD at 25 pole interface 3 Connect the input of the level converter to be connected with PIN 3 TXD at 9 pole interface or with PIN 2 TXD at 25 pole interface 4 The display time can be adjusted via software Putting into operation Settings at the terminal program 4 Putting the unit into operation For connecting the interfaces use chapters 3 2 Designation of the functional elements and 3 3 Interfaces at the unit In chapter 11 Circuit diagrams appropriate application c
20. t to factory setting i 12 6 2 e eT Te P 12 T MaintenaNC TT 12 Be APQUDISSTIOOUING svctcestadrasstatvaccuntteriviuaacincawerandesiescauiuanestescumndtepumauteatonteauepnstesenddateenenusnscas 13 8 1 Outputs in normal OUTPUT ModE sosisini nai a a a Ee aAa AAE AE AN aA 13 8 2 Outputs in extended output Mode a 13 8 3 Information regarding troubleshooting zas zv i a aasa eeeaeeeaaeseeeeseeeeseeee eaaa rA ENEAN naa 13 8 4 Explaining the error code in extended output MOde ee sees eesee sese essere ee nennen nenn nenen nenn 14 9 Service and repairs sees eee eee 15 10 Technical Bad srl 16 10 1 Scope fdelivery n aan da a ne een 16 10 2 Technical data WZLSA4 S T 17 Tis Gircuitdi gramMS rule RR 18 11 1 Standard wiring of the user interface ii 18 11 2 User interface at data transmission 18 11 3 User interface at speech transmission i 19 12 Timelapse diagrams of the Unib assesses aaa a kia aia ENEA 19 12 1 Typ time response for receive mode as function of the received signal sees ii 19 12 2 Typ time response for receive mode as function of the channel eee eee ii 20 12 3 Typ RSSI response over input level and temperature ee eee eee eee eee eee eee neee ee eee 20 12 4 Typ frequency response of the receiver iii 21 CE 22 14 CONO tetra 29 19 Gesuiti 23 Safety precautions General ins
21. tructions 1 Safety precautions a DI ATTENTION e Donotoperate the units in rooms with explosive atmosphere damp environments or rooms with aggressive air or increased electromagnetic requirements e Mind the instructions for putting the unit into operation e Fusetheunitatthe voltage supply input UB_IN of the user interface by means of a fuse min 250 mA max 1 A e Incase there is a danger of touching conductive parts due to improper use of the unit the power supply has to be disconnected immediately e Do not open the unit only permit repairs by the manufacturer ESD protection measures Comply with the ESD protection measures according to DIN EN 61340 5 1 2 when opening A the unit potential equalization between body and ground of the unit via high value resistance approx 1 MOhm e g over a usual wrist band Read this user manual carefully to be ably to use the wealth of features of your new WZ LSA 4 3 You can also find further information on our website http www fmncom com 2 General instructions e The compliance with the operating instructions and the instructions for putting the device into operation is also part of the intended use Every other use is considered as not to be intended The manufacturer assumes no liability for damages resulting from such use e All connection cables have to be equipped with an earth connected shielding The antenna connection cable has to be equipped with a wave imped

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