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Rohde & Schwarz VOR/ILS Analyzer EVS200, User Manual

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Rohde & Schwarz VOR/ILS Analyzer EVS200 User Manual Download Page 22

VOR/ILS Analyzer EVS200

0796.1800.02

E-8

13

Chapter 3: Operation

Operation of the unit

Because of the many universal measuring functions of the VOR/ILS Analyzer EVS200 the operation
has to be carried out according to the following instructions. Basically all measurement parameter set-
tings are realized through softkeys and the mode keys. An activated mode is shown by a luminous
LED (beside the belonging mode key). All important signal parameters are analyzed by the DSP (digital
signal processor) and indicated on the display. Due to the variety of the analyzed parameters the indi-
cation in the ILS and VOR mode is subdivided into two display parts ("DISPL 1/2" and
DISPL 2/2").

The RS-232-Interface operation of the VOR/ILS Analyzer EVS200 is

described in section "Operating the VOR/ILS ANALYZER EVS200

via RS-232-Interface"

General operating instructions of the VOR/ILS Analyzer EVS200

Summary of Contents for VOR/ILS Analyzer EVS200

Page 1: ...0798 1988 12 08 User Manual VOR ILS Analyzer EVS200 0796 1800 02 ...

Page 2: ...d persons Any disregard will be prosecuted and is subject to restitution UrhG UWG BGB For the case a patent is issued or the design is officially registered all rights are reserved ROHDE SCHWARZ GmbH Co KG Werk Köln D 51147 Köln Graf Zeppelin Straße 18 Telefon 02203 49 0 Int 49220349 0 Telefax 02203 49 51364 Telex 8874525 Printed in Federal Republic of Germany Subject to change Data without tolera...

Page 3: ...o electrical equipment for use within defined voltage limits 73 23 EEC revised by 93 68 EEC relating to electromagnetic compatibility 89 336 EEC revised by 91 263 EEC 92 31 EEC 93 68 EEC Conformity is proven by compliance with the following standards EN61010 1 1994 A2 1996 A2Ber 1998 Ber1 1998 EN50081 1 1992 EN50082 1 1992 Affixing the EC conformity mark as from 2002 01 Cologne 2002 01 17 ROHDE SC...

Page 4: ......

Page 5: ... the nominal voltage set on the unit matches the nominal voltage of the AC supply network If a different voltage is to be set the power fuse of the unit may have to be changed accordingly 6 Units of protection class I with disconnectible AC supply cable and appliance connector may be operated only from a power socket with earthing contact and with the PE conductor con nected 7 It is not permissibl...

Page 6: ...tteries are suitable for environmental ly friendly disposal or specialized recycling Dis pose them into appropriate containers only Do not short circuit the battery 12 Equipment returned or sent in for repair must be packed in the original packing or in packing with electrostatic and mechanical protection 13 Electrostatics via the connectors may da mage the equipment For the safe handling and oper...

Page 7: ...nection 8 Assembling the FO Cable Jack 8 Finishing and connection to the Vehicle Board Supply 8 Connection of Signal Control Inputs Outputs 9 Antenna connection 9 AF OUT 9 RS 232 Interface 9 External AF input 10 DSP output 10 3 Operation Switch On switch Off the unit at mains supply 11 Switch On switch Off the unit at VDC supply 11 Switch on procedure 11 Selftest BITE 12 Battery operation 12 Opera...

Page 8: ...ters on BEACON Display 24 LEVEL Mode 25 Operating instructions of Level Mode 25 Storing and recalling reference levels 26 Signal parameters on Level Display 28 SPECTRUM Mode 29 Operating instructions of Spectrum Mode 29 RS 232 Interface operation 30 COM Parameter 30 Handshake 30 Control commands 30 Unit related control commands 31 Mode related control commands 35 ILS Mode 35 VOR Mode 44 Level Mode...

Page 9: ...VOR ILS Analyzer EVS200 0796 1800 02 E 8 0 3 Contents Chapter Page 5 Service Service 55 Warranty 55 6 Technical Specification Technical data 56 General data 58 Accessories 59 ...

Page 10: ...efore connecting the unit to a vehicle s 12 VDC board supply pay attention that the battery s negative pole is connected to ground GROUND of the vehicle Finishing and connection of the auxiliary FO cable jack is described in chapter VDC connection in section 2 Preparation for Operating Whilst time of warranty a defective internal battery option may only be changed by Rohde Schwarz service personne...

Page 11: ...Unpacking 1 Unpack the VOR ILS Analyzer EVS200 2 Remove the protective covers 3 Inspect the unit for evident damage visual check 4 Check the auxiliary accessory FO cabel jack 0018 6700 00 power cable operating instructions 0798 1988 12 07 Keep the packing material for reusing ...

Page 12: ...r 75 MHz beacon parameter Ranges for measurements are e g dynamic runway surveying limited through high measurement speed 90 measurements s static distant field surveying function monitoring of transmitting field stations with data tele transmitting surveying of transmitting antenna characteristics through level mode Clearance Glidepath common parameter analysis without disconnecting the transmitt...

Page 13: ... operation option for mobile operation external DC operation for mobile operation remote control through RS 232 Interface selftest facillty BITE digital signal processing DSP on ILS and VOR analysys high rapidity of measurement ILS 90 measurements s immediately display of all measurement data DDM SDM measurements calibration of Y t recorder DDM 0 level measurements 4 reference levels can be stored...

Page 14: ...m dependent functional keys are allocated to the conforming operation mode The softkey function is indicated on the display With the potentiometer Volume the loudspeaker s and headphone s volume can be set volume control only for connecting headphones with soundproofing e g R S order no 0708 9010 00 headphone connector BNC socket output level 200 mV 50 by 50 AM part rms Ω AF output mode keys The m...

Page 15: ...in the setup Y t setup ILS mode for the and mode BNC socket localizer glideslope mains switch Master switch only for mains operation on off mains fuses F1 F2 IEC127 T800H 250 V mains connector socket 87 to 265 VAC 47 to 63 Hz SUB D socket COM parameter BAUD rate 9pole N81 1200 2400 4800 9600 19200 adjustable in the setup RS 232 Interface external AF input The external AF input is to select in the ...

Page 16: ...n agreement with safety class I all mains circuitry must be insula ted and the requirement is a good conductive and durable together and ground wire connection of all touchable con ductive parts of the unit which can directly be alive in case of a failure Mains connector earthed plug put only into a protective contact socket If there is a connector it must durable be connected with a ground wire T...

Page 17: ...lour BLUE for ground FO cable jack order no 0018 6700 Pin connection of the FO cable jack Assembling the FO cable jack Finishing and connection to the Vehicle Board Supply Strip the cable end ca 8 mm and mount multicore Draw the cable through the enclosure and connect it according to the above pin connection of the FO cable jack Fit the pull relief and assemble the FO cable jack Connect the cable ...

Page 18: ...put at the unit s rear side is possible AF OUT Via the AF OUT at the frontside the demodulated AF signal will be output AF signal bandwidth 300 Hz to 4 kHz output level approx 200 mVrms 50 Ω by 50 AM part e g VOR ILS Analyzer oscilloscope RS 232 Interface Via the RS 232 Interface at the rearside all essential unit functions of the VOR ILS Analyzer EVS200 can be remote controlled with a PC terminal...

Page 19: ...er DSP output On the DSP OUT at the rearside e g a XY tracer can be connected The scaling of the XY values can be set for any mode localizer glideslope in the setup DDM Y t RANGE or in ILS Mode Y t SETUP output signals in VOR and ILS Mode ILS Mode VOR Mode Display 1 normalized DDM values DC voltage Range 1 to 4 no output Display 2 voice frequency 300 to 3000 Hz voice frequency 300 to 3000 Hz scali...

Page 20: ...input it must be switched on or to STANDBY only with the Switch POWER at the frontside On external DC supply of the unit the installed battery option will not be charged Switch on procedure During the switch on procedure the VOR ILS Analyzer EVS200 performs a selftest BITE The tested functions are indicated with OK This test takes approx 5 s After that automatically it is switched over to the star...

Page 21: ...ion of the VOR ILS Analyzer EVS200 is an optional component It is always pos sible to retrofit the unit with this mode The unit automatically goes into battery operation when the external power supply DC AC is switched or cut off The battery operation is indicated on the display by the battery symbol in each mode The operation time is 100 minutes max brightness or 150 minutes at average brightness...

Page 22: ...An activated mode is shown by a luminous LED beside the belonging mode key All important signal parameters are analyzed by the DSP digital signal processor and indicated on the display Due to the variety of the analyzed parameters the indi cation in the ILS and VOR mode is subdivided into two display parts DISPL 1 2 and DISPL 2 2 The RS 232 Interface operation of the VOR ILS Analyzer EVS200 is des...

Page 23: ...P output RNG 1 to RNG 4 DDM Y t RANGE GS XY value scaling in glideslope mode at DSP OUT refer to page 10 RNG 1 to RNG 4 AF INPUT SOURCE AF selection for valuation INT internal AF EXT external AF via AF EXT input STARTUP mode startup mode setting at switching on the unit VOR VOR mode ILS ILS mode BCN Beacon mode SPEC Spectrum mode LEVEL level mode SQUELCH on off switching squelch ON OFF setting val...

Page 24: ...VOR ILS Analyzer EVS200 0796 1800 02 E 8 15 Chapter 3 Operation Operating instructions of SETUP Mode ...

Page 25: ...VOR ILS Analyzer EVS200 0796 1800 02 E 8 16 Chapter 3 Operation ILS Mode Operating instructions of ILS Mode ...

Page 26: ...VOR ILS Analyzer EVS200 0796 1800 02 E 8 17 Chapter 3 Operation Operating instructions of Y t setup menu ...

Page 27: ...VOR ILS Analyzer EVS200 0796 1800 02 E 8 18 Chapter 3 Operation Operating instructions of STORE DDM menu ...

Page 28: ...VOR ILS Analyzer EVS200 0796 1800 02 E 8 19 Chapter 3 Operation ...

Page 29: ... shows the set squelch threshold dBm DISPL 1 2 AM MOD 90HZ AM modulation depth 90 Hz AM MOD 150HZ AM modulation depth 150 Hz DDM differences in depth of modulation DDM value non dimension value µA SDM total modulation factor SDM value non dimension value µA PHI 90 150 phase shift 90 Hz 150 Hz degree DISPL 2 2 ID AF FREQ AF frequency 1020 Hz Hz ID AM MOD AM modulation depth of AF frequency VOICE AM...

Page 30: ...VOR ILS Analyzer EVS200 0796 1800 02 E 8 21 Chapter 3 Operation VOR Mode Operating instructions of VOR Mode ...

Page 31: ...kHz MHz LEVEL dBm receiver signal in dBm numerical and bargraph indication the lower bargraph shows the set squelch threshold dBm DISPL 1 2 BEARING BEARING angle DEG AM MOD 30HZ AM modulation depth 30 Hz AM MOD 9960HZ AM modulation depth 9960 Hz FM DEVIATION frequency deviation Hz FM INDEX FM index value index value non dimension value DISPL 2 2 ID AF FREQ AF frequency 1020 Hz Hz ID AM MOD AM modu...

Page 32: ...VOR ILS Analyzer EVS200 0796 1800 02 E 8 23 Chapter 3 Operation BEACON Mode Operating instructions of BEACON Mode ...

Page 33: ...and bargraph center frequency indication in kHz MHz LEVEL dBm receiver signal in dBm numerical and bargraph indication the lower bargraph shows the set squelch threshold dBm F1 AF frequency and AM modulation depth at 3000 Hz inner marker Hz and F2 AF frequency and AM modulation depth at 1300 Hz middle marker Hz and F3 AF frequency and AM modulation depth at 400 Hz outer marker Hz and ID AF frequen...

Page 34: ...VOR ILS Analyzer EVS200 0796 1800 02 E 8 25 Chapter 3 Operation Level Mode Operating instructions of Level Mode ...

Page 35: ...locks M1 to M4 can be stored or called up Following data will be allocated to a storage space actual reference level actual receiver frequency After storing or recalling of a memory the level main window is updated with the relevant memory data When the receiving level changes the update level is permanently indicated in level window Storage menu explanation See next page for the operation diagram...

Page 36: ...VOR ILS Analyzer EVS200 0796 1800 02 E 8 27 Chapter 3 Operation ...

Page 37: ...EQ MHZ receiver frequency in MHz numerical and bargraph center frequency indication in kHz MHz LEVEL dBm receiver signal in dBm numerical and bargraph indication the lower bargraph shows the set squelch threshold dBm LEVEL dB actual level difference between actual receiving level and set reference level the bargraph indication shows the level as a tendency indication dB LEVEL REF set reference lev...

Page 38: ...nalyzer EVS200 0796 1800 02 E 8 29 Chapter 3 Operation Spectrum Mode Operating instructions of Spectrum Mode The spectrum analysis of the VOR ILS Analyzer EVS200 is only for trend indication in the scanned range ...

Page 39: ...d are defined as firmware non parity bit N 8 data bits 8 1 stop bit 1 Handshake Hardware handshake is renounced Handshake is performed by software as a transmitted sequence e g READY or as a measuring value or a tuning value e g RF107000 Control commands There are two categories of control commands super commands mode independant unit related mode dependant commands specified mode must first be se...

Page 40: ...ple command from the controller response of the VOR ILS Analyzer EVS200 input RF107000 CR rf107000 CR READY CR LF READY CR LF query RF CR rf CR 107000kHz CR LF 107000kHz CR LF Command LO command function LO Local set unit local mode Because local operation is automatically locked when the unit is controlled by a controller the com mand LO local performs further local operation at the unit Example ...

Page 41: ...nction TEST RS232 test section output The command TEST initiates a RS232 test section All ASCII characters 20h to FF will be supplied Example command from the controller response of the VOR ILS Analyzer EVS200 query EC1 CR ec1 CR READY CR LF READY CR LF Command LA command function LA Level Absolute query of receiving level The command LA reads the actual receiving signal level in Level mode Exampl...

Page 42: ...ld In Test asking for result The EVS200 performs approx every 500 ms a self test BITE and makes the result available as a 9bit binary form During this test the following voltages and funtionally subunits of the units are checked all operating voltages hostprocessor memory DSP processor battery capacity explanation of BITE information B8 B7 B6 B5 B4 B3 B2 B1 B0 SYNTH 1 SYNTH 2 EXT DC PS DC 12 VDC 1...

Page 43: ...CR EVS200 VERSION No from Date Copyright C Rohde Schwarz Werk Köln CR LF Command ML command function ML Mode Delta Level level mode setting The command ML enables a switching over to the level mode Exampel command from the controller response of the VOR ILS Analyzer EVS200 input ML CR ml CR READY CR LF READY CR LF Command MV command function MV Mode VOR VOR mode setting The command MV enables a sw...

Page 44: ... Mode BEACON BEACON mode setting The command MB enables the switching over to the BEACON mode Example command from the controller response of the VOR ILS Analyzer EVS200 input MB CR mb CR READY CR LF READY CR LF Mode related control commands ILS Mode Command DD0 command function DD0 DDM information DDM value query The command DD0 reads the actual DDM value value without dimension in the ILS mode E...

Page 45: ...and SD0 command function SD0 SDM information SDM value query The command SD0 reads the actual SDM value value without dimension in the ILS mode Example command from the controller response of the VOR ILS Analyzer EVS200 query SD0 CR sd0 CR e g 0 8006 CR LF e g 0 8006 CR LF Command SD1 Command function SD1 SDM information query of SDM value in µ µ µ µA The command SD1 reads the actual DDM value in ...

Page 46: ...nd function AM3 AM modulation depth 150 Hz query of AM modulation depth 150 Hz The command AM3 reads the actual AM modulation depth 150 Hz in the ILS mode Example command from the controller response of the VOR ILS Analyzer EVS200 Query AM3 CR am3 CR e g 29 9 CR LF e g 29 9 CR LF Command PH command function PH Phase 90 150 Hz query of Phase angle 90 150 Hz The command PH reads the actual PHI value...

Page 47: ...level mode Example command from the controller response of the VOR ILS Analyzer EVS200 input BW0 CR bw0 CR READY CR LF READY CR LF Command BW1 command function BW1 bandwidth information 30 kHz bandwidth setting The command BW1 enables the switching over to the 30 kHz IF bandwidth in the ILS mode and in the level mode Example command from the controller response of the VOR ILS Analyzer EVS200 input...

Page 48: ...e corresponding to the terminal program To reach 34 meas s the baud rate must be set to 19200 baud in the Setup of the VOR ILS Analyzer EVS200 It must be attended the acceptance of the data transfering rate by the terminal program The measurement can be stopped through the command FA0 refer to Command FA0 Example command from the controller response of the VOR ILS Analyzer EVS200 input FA1 CR fa1 ...

Page 49: ...st be set to 19200 baud in the Setup of the VOR ILS Analyzer EVS200 It must be attended the acceptance of the data transfering rate by the terminal program The measurement can be stopped through the command FA0 refer to Command FA0 Example command from the controller response of the VOR ILS Analyzer EVS200 input FA2 CR fa2 CR With the command FA2 the echo mode is automatically switched OFF output ...

Page 50: ...d measurement value transmission The stated RS 232 transmission times are related to 19 200 Baud The measurement values can be read in and output as a text file corresponding to the terminal pro gram The baud rate must be set to 19200 baud in the Setup of the VOR ILS Analyzer EVS200 It must be attended the acceptance of the data transfering rate by the terminal program The measurement can be stopp...

Page 51: ...bles the switching over to the content of display1 in the VOR ILS mode This is prediction for reading out the data of the corresponding mode VOR ILS Example command from the controller response of the VOR ILS Analyzer EVS200 input D1 CR d1 CR READY CR LF READY CR LF Command D2 command function D2 display information switch over to display2 The command D2 enables the switching over to the content o...

Page 52: ... ID The command AM8 reads the actual AM modulation depth ID in the ILS VOR mode Prediction for reading out the data of the corresponding mode VOR ILS is the switching over to display2 Example command from the controller response of the VOR ILS Analyzer EVS200 query AM8 CR am8 CR e g 10 0 CR LF e g 10 0 CR LF Command AM9 command function AM9 AM modulation depth voice query of AM modulation depth vo...

Page 53: ...function AM0 AM modulation depth 30 Hz query of AM modulation depth 30 Hz The command AM0 reads the actual AM modulation depth 30 Hz in the VOR mode Example command from the controller response of the VOR ILS Analyzer EVS200 query AM0 CR am0 CR e g 30 1 CR LF e g 30 1 CR LF Command AM1 command function AM1 AM modulation depth 9960 Hz query of AM modulation depth 9960 Hz The command AM1 reads the a...

Page 54: ...y of FM index value The command FM1 reads the actual FM index value in the VOR mode Example command from the controller response of the VOR ILS Analyzer EVS200 query FM1 CR fm1 CR e g 15 9 CR LF e g 15 9 CR LF Command D1 command function D1 Display information switching over to Display1 The command D1 enables the switching over to the content of display1 in the VOR ILS mode This is the prediction ...

Page 55: ...y The command AM8 reads the actual AF frequency ID in the ILS VOR mode Prediction for reading out the data of the corresponding mode VOR ILS is the switching over to display2 Example command from the controller response of the VOR ILS Analyzer EVS200 query AF8 CR af8 CR e g 1020 0Hz CR LF e g 1020 0Hz CR LF Command AM8 command function AM8 AM modulation depth ID query of AM modulation depth ID The...

Page 56: ...vel Bearing AM30 AM9960 FM deviation FM Index per second This conforms to a time interval of 66 ms The stated RS 232 transmission times are related to 19 200 Baud The measurement values can be read in and output as a text file corresponding to the terminal pro gram The baud rate must be set to 19200 baud in the Setup of the VOR ILS Analyzer EVS200 It must be attended the acceptance of the data tra...

Page 57: ...232 transmission times are related to 19 200 Baud The measurement values can be read in and output as a text file corresponding to the terminal pro gram The baud rate must be set to 19200 baud in the Setup of the VOR ILS Analyzer EVS200 It must be attended the acceptance of the data transfering rate by the terminal pro gram The measurement can be stopped through the command FA0 refer to Command FA...

Page 58: ...R sr CR READY CR LF READY CR LF Command LR command function LR level reference reference level query The command LR reads the actual set reference level in the Level mode Example command from the controller response of the VOR ILS Analyzer EVS200 query LR CR lr CR e g 48 1dBm CR LF e g 48 1dBm CR LF Command LD command function LR level delta Level query The command LD reads the actual Level in the...

Page 59: ...command function AM5 AM modulation depth F2 range query of AM modulation depth F2 The command AM5 reads the actual AM modulation depth F2 1300 Hz in the BEACON mode Example command from the controller response of the VOR ILS Analyzer EVS200 query AM5 CR am5 CR e g 30 5 CR LF e g 30 5 CR LF Command AM6 command function AM6 AM modulation depth F3 range query of AM modulation depth F3 The command AM6...

Page 60: ...F4 command function AF4 AF frequency range F1 query of AF frequency 3000 Hz The command AF4 reads the actual AF frequency F1 in the BEACON mode Example command from the controller response of the VOR ILS Analyzer EVS200 query AF4 CR af4 CR e g 3000 0Hz CR LF e g 3000 0Hz CR LF Command AF5 command function AF5 AF frequency range F2 query of AF frequency 1300 Hz The command AF5 reads the actual AF f...

Page 61: ... mode Example command from the controller response of the VOR ILS Analyzer EVS200 query AF6 CR af6 CR e g 400 0Hz CR LF e g 400 0Hz CR LF Command AF7 command Funktion AF7 AF Frequenz ID query of AF frequency ID The command AF7 reads the actual AF frequency ID in the BEACON mode Example command from the controller response of the VOR ILS Analyzer EVS200 query AF7 CR af7 CR e g 1020 0Hz CR LF e g 10...

Page 62: ...41 MHz VSWR 1 5 AF output labeling figure description AF OUT 50 Ω output level 200 mVrms 50 Ω frequency range 0 3 to 3 4 kHz Headphone connection labeling figure description PHONES Only for connecting headphones with soundproofing e g R S order no 0708 9010 00 XY Tracer connection labeling figure description DSP OUT The scaling of the XY values can be set in the setup Ils mode Y t setup for the lo...

Page 63: ... labeling figure description RS232 DDE standard RS 232 Interface COM parameter N81 baud rate 1200 2400 4800 9600 19200 adjustable in the setup External VDC connection labeling figure description INPUT 9 15 VDC DC connection 12 VDC 30 W tolerance max 9 to 15 VDC Mains connection labeling figure description INPUT 85 250 V 47 63Hz F1 F2 IEC127 T800H 250V mains connection 87 to 265 VAC 47 to 63 Hz ...

Page 64: ...VS200 must be send to the service place named in the following In case of service questions please contact us over phone or FAX 49 2203 49 266 49 2203 49 336 Warranty Warranty conditions are stated in the general terms of business Whilst time of warranty a defective internal battery option may only be changed by Rohde Schwarz service personnel ...

Page 65: ...modulation AM RF Input BNC Absolute level receiver Display range 96 to 10 dBm Accuracy 2 dB Difference level receiver Bargraph quasi analog 12 dB to reference level Resolution 0 1 dB Accuracy indication 1 dB ILS signal analysis The given values are valid only for the 30 kHz or 38 kHz IF filter RF level 70 to 30 dBm Frequency range 108 to 118 MHz 328 to 336 MHz Modulation depth 10 to 80 90 150 Hz 2...

Page 66: ... 0258 DDM Range 4 0 0 50 0 0 0 5 DDM Glideslope Range 1 0 0 50 0 0 0 5 DDM Range 2 0 0 5 0 0 0 05 DDM Range 3 8 75 5 0 0875 0 05 DDM Range 4 17 5 5 0 175 0 05 DDM SDM measurement SDM 10 to 80 accuracy 1 absolute Resolution 0 0001 SDM VOR signal analysis Bearing Accuracy 0 1 Resolution 0 05 0 01 Setup AM modulation depth 30 Hz and 9 96 kHz Accuracy 1 Resolution 0 1 FM deviation Accuracy 0 5 0 1 Hz ...

Page 67: ... 100 min max brightness 150 min at average brightness Mechanical resistance shock tested to MIL 810D vibration tested to DIN IEC 68 2 36 68 2 6 EMC RF Emissions complies with EN 50081 1 RF Immissions complies with EN 50082 1 Temperature range Operating temp range 5 C to 45 C Storage temp range 20 C to 60 C Dimensions and Weight Dimensions WxHxD 219 x 147 x 350 mm Weight 4 9 kg without battery 6 5 ...

Page 68: ... MHz 15 MA1 0798 4312 Coaxialcable 50 Ω RG58 with 1xN BNC Connector 5 m length KK1 0798 4235 Coaxialcable 50 Ω RG58 with 1xN BNC Connector 10 m length KK2 0798 4235 Batterybelt for ext supply at the EVS200 with internal battery charger 12 V 5 Ah for approx 190 min operation time weight 2150 g BG01 0798 4335 Batterybelt for ext supply at the EVS200 with internal battery charger 12 V 7 Ah for approx...

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