R&S IMS Hardware Setup according IEC / EN (radiated immunity) Products: R&S IMS, R&S NRP-Z91, HL046E. Application Note

Transcription

1 Products: R&S, R&S NRP-Z91, HL046E R&S Hardware Setup according IEC / EN (radiated iunity) Application Note This application note describes the general setup and required equipent for EMC easureents according to the EMS standard IEC / EN

2 1 Contents 1 Contents General Reark EMC Standards Applicable coercial EMC standards (E U) General Setup acc. IEC/EN Test Syste Hardware Configuration General Configuration Hardware for Radiated EMS (IEC / EN ) Site Requireents Equipent (Standard Configuration 10 V/) Cabling Alternatives Interlock Connection Cobined Conducted and Radiated EMS Test Syste (IEC / EN , -6) General Reark The ai of this application note is to describe the setup and putting into operation for a typical easureent setup. The application note consists of two ain parts: EMC Standards Background inforation on the range of EMC tests for coercial equipent and on details of IEC/EN Hardware Configuration Guide for the selection of appropriate hardware and accessories There are four application notes covering the coercial sdtandards IEC / EN and -6: 1SP31 / R&S - Hardware Setup according IEC / EN (conducted iunity) 1SP32 / R&S -Hardware Setup according IEC / EN (radiated iunity) 1SP33 / R&S - Software Configuration according IEC / EN (conducted iunity) 1SP34 / R&S - Software Configuration according IEC / EN (radiated iunity) Note: To carry out easureents according to the EMC standards requires detailed knowledge of these standards and EMC practice, which can not be covered by this application note. The setups, especially the equipent, are recoendations. They are based on any years of experience in the design and ipleentation of EMC systes and have been optiised for best syste perforance. The use of other coponents than the recoended ones ay result in significant perforance changes (e.g. use of other antennas). In addition the achievable syste perforance depends not only on the test equipent, but also on the test environent e.g. the anechoic chaber perforance. The configurations described in this application note can therefore not guarantee the fulfilent of the respective standards in any case.

3 3 EMC Standards The ai of this chapter is to provide background inforation, for what type of equipent this application note applies. Because the EMC standardisation depends on the local legislation this overview is liited to the European arket. In addition it describes the ain requireents of a test setup according IEC/EN Applicable coercial EMC standards (EU) Generally the EMC-Standards are divided into three groups: Basic Standard: Describes easureent techniques Generic Standard: Describes product environent, references to basic standard Product Standard: Describes easureents for type of product, references to basic standard EN , -6 are the Basic Standards for radiated and conducted iunity (EMS). The following diagra gives an excerpt fro the covered ain standards: Basic Standards EMC Test Methods EMS Electro Magnetic Susceptibility EMI Electro Magnetic Interference CS Conducted Susceptibility RS Radiated Susceptibility Magnetic Fields Continous Wave EN Conducted Pulses ESD EN Burst EN Surge EN Voltage Dips and Variations EN Conducted RF EN Radiated RF Field EN Refer to Basic Standards EN , -6 Inforation Technology Medical Equipent Wireless Equipent Equipent (ITE) EN ETSI EN x EN / CISPR 24 Product Standards EMI: EN EMS: EN EMS: EN EMI: EN Residential, Coercial and Industrial Environent light industrial Environent Generic Standards(EMC Environent) Also other product standards ay refer to EN and -6, because it is one of the ost used basic standard in coercial EMS testing.

4 3.2 General Setup acc. IEC/EN IEC/EN describes radiated EMS-tests for coercial equipent. General Test Setup acc. EN

5 To carry out these tests detailed knowledge of the standard is necessary. The following is only a short overview of the ain paraeters, that influence the test syste: Frequency Range Modulation 80 MHz to 2 GHz 80% Modulation with 1 khz Reark: To achieve 1,8 ties higher field strength (80% odulation) 3,24 ties ore aplifier power is necessary. Frequency step Haronics Coupling Method Field calibration 1%, easureent tie per step depends on the EUT, but ust be 1,5 *10-3 decades/second < 15 dbc Antenna The field is easured without EUT in a hoogenous area of 1,5 to 1,5 represented by 16 points (see below). Out of these 16 field values the power required for the test configuration is evaluated. Reark: This evaluation routine according to the standard is ipleented in the operating syste.

6 Test Environent Test distance EUT position Shielded roo 3 fro antenna tip to EUT (recoended) Table top equipent: 0,8 table height Floor standing equipent: 0,1 height on non-conducting support EUT cabling Cable length > 3 : Exposed to the field for a distance of 1 Decoupled by filters or ferrite tubes 4 Test Syste Hardware Configuration 4.1 General Configuration The block diagra shows the basic syste setup described in this application note: Basic Syste Setup Different alternatives are shown in the respective sections of this chapter. 4.2 Hardware for Radiated EMS (IEC / EN ) Site Requireents For operation of the test syste it is necessary to have Anechoic Chaber with 3 test distance and floor absorbers Turntable (Supported controllers are inn-co, ETS, Frankonia, Siepel, HD Deisel) RF and fibre optic feedthrough into the shielded roo Interlock circuit Reark: This equipent is ostly delivered copletely with the anechoic chaber.

7 4.2.2 Equipent (Standard Configuration 10 V/) Fibre Optic Anechoic Chaber USB RF IN FWD REV RF PC with Operating Syste NRP-Z91 v12 and Power Aplifier HL046E Field Probe The block diagra shows the general setup of a test syste according IEC / EN It covers radiated fields in the frequency range 80 MHz to 2 GHz. The field strength in 3 test distance and over an area of 1,5 x 1,5 is 10 V/. This configuration for 10 V/ is used by ost custoers. Note: Because 80% odulation is always added during the test, the test syste ust be capable of generating 1,8 higher field strength (e.g. for tests at 10 V/ plus 80% AM it ust be capable of generating 18 V/ CW). Equipent Manufacturer Type Field Strength 3 V/ 10 V/ Integrated Measureent Syste R&S R&S Docuentation Calibration Values R&S R&S Power Sensor R&S NRP-Z91 R&S USB-Adaptor (passive) for R&S NRP-Z R&S Power Aplifier 80 MHz 2 GHz, 160 / 100 / Bonn BLWA W with USB-Interface 2) 3) 160/100/60D Antenna R&S HL046E with pedestal R&S Field Probe Fibre Optic - RS232 Converter for Field Probe Holaday 1) Holaday 1) HI6005 PC for Syste Control : Mandatory equipent : Equipent possible, but better alternative ( ) available : Recoended equipent 1) Alternative: Narda EMC300 with probe 2) The power aplifier can be placed in the control roo due to its low noise and waste heat. A special aplifier roo is not necessary for this configuration. Please order stand-alone version, if it should not be rack ounted. 3) This power aplifier is a triple band aplifier, which represents the power aplifiers 2 to 4 in the software configuration

8 4.2.3 Cabling The following cables are necessary: Signal Path Nae Fro To Type Connector Length Reark Generator Aplifier 2 Aplifier2 RFSensor1 (FWD) Aplifier2 RFSensor1 (REV) Aplifier2 EMS Antenna X2 RF OUT2 Aplifier2 FWD Aplifier2 REV Aplifier2 OUT Aplifier2 Input X6 FWD2 X7 REV RG58 3) N Typ. 0,5 RG58 3) N Typ. 0,5 RG58 3) N Typ. 0,5 HL046E RTK81 1) N ax. 8 1) Split at feedthrough into anechoic chaber 2), Manufacturer: Rosenberger Fibre optic cable Field probe PC 50/120µ FSMA 2 x 10 Split at feedthrough into anechoic chaber 2) USB Connection Aplifier Interlock Cable Aplifier USB Type B Interlock Typ. 1 See chapter 4.3 1) The attenuation of the coplete cabling between power aplifier and antenna has to be less than 2 db at 2 GHz. Other cable types can be used, if this is achieved. Anyway this connection should be as short as possible. 2) These cables are often placed in the double floor between chaber wall and connection panel. 3) Cable type is uncritical for sall distances (< 1,5 )

9 4.2.4 Alternatives Alternative 3 V/ If only 3 V/ axiu field strength is necessary, the power aplifier can be replaced by the following cobination: Equipent Manufacturer Type Reark Power Aplifier 80 MHz 1 GHz, 30 W Bonn BLWA Dual-Band-Aplifier (represents Aplifier in configuration) Option Integrated Monitor and USB-Interface for Power Aplifier Bonn Power Aplifier 1 2 GHz, 10 W Bonn BLMA (Represents Aplifier 4 in configuration) Option Integrated Monitor and USB-Interface for Power Aplifier Bonn -B2 Transfer Relay R&S RF cables to power relay v02 required Additional cables: Signal Path Nae Fro To Type Conne ctor Generator Aplifier 4 Aplifier4 RFSensor1 (FWD) Aplifier4 RFSensor1 (REV) Aplifier2 Transfer Relay Aplifier4 Transfer Relay Transfer Relay EMS Antenna X3 RF OUT3 Aplifier3 FWD Aplifier3 REV Aplifier2 OUT Aplifier3 OUT K5 (1) Aplifier3 Input X8 FWD3 X9 REV K5 (2) K5 (3) Length RG58 1) N Typ. 0,8 RG58 1) N Typ. 0,8 RG58 1) N Typ. 0,8 RTK81 N ax. 0,5 2) RTK81 N ax. 0,5 2) HL046E RTK81 1) N ax. 7,5 2) Reark Replaces cable Aplifier2 EMS Antenna 1) Cable type is uncritical for sall distances (< 1,5 ) 2) The attenuation of the coplete cabling between power aplifier and antenna has to be less than 2 db at 2 GHz. Other cable types can be used, if this is achieved. Anyway this connection should be as short as possible.

10 Alternative 30 V/ 800 MHz to 2 GHz If 30 V/ axiu field strength is required in the frequency range 800 MHz to 2 GHz in addition to the 10 V/ fro 80 MHz to 1 GHz, the power aplifiers can be replaced by the following cobination: Equipent Manufacturer Type Reark Power Aplifier 80 MHz 1 GHz, 160/100D, USB interface Bonn BLWA /100D Power Aplifier 0,8 2,2 GHz, 350 W Bonn BLMA Option Integrated Monitor and USB-Interface for Power Aplifier Bonn Dual-Band-Aplifier, represents Aplifier in configuration (Represents Aplifier 4 in configuration) -B2 Transfer Relay R&S v02 required Additional cables: Signal Path Nae Fro To Type Conne ctor Generator Aplifier 4 Aplifier4 RFSensor1 (FWD) Aplifier4 RFSensor1 (REV) Aplifier2 Transfer Relay Aplifier4 Transfer Relay Transfer Relay EMS Antenna X3 RF OUT3 Aplifier3 FWD Aplifier3 REV Aplifier2 OUT Aplifier3 OUT K5 (1) Aplifier3 Input X8 FWD3 X9 REV K5 (2) K5 (3) Length RG58 1) N Typ. 0,8 RG58 1) N Typ. 0,8 RG58 1) N Typ. 0,8 RTK81 N ax. 0,5 2) RTK81 N ax. 0,5 2) HL046E RTK81 1) N ax. 7,5 2) Reark Replaces cable Aplifier2 EMS Antenna 1) Cable type is uncritical for sall distances (< 1,5 ) 2) The attenuation of the coplete cabling between power aplifier and antenna has to be less than 2 db at 2 GHz. Other cable types can be used, if this is achieved. Anyway this connection should be as short as possible.

11 4.3 Interlock Connection The interlock is a safety feature, which ensures, that the RF power is only switched on, when the doors to the easureent site are closed. For ipleentation of the interlock contacts on the entrance doors of the anechoic roo are necessary. Note: The Interlock is a safety feature. It akes sure, that no person is exposed to hazardous fields or voltages. Therefore a proper installation of an interlock loop is strongly recoended. The interlock has to be realised by a loop between pin 1 and pin 3 of the interlock connector. The loop has to be equipped with potential free contacts e.g. at the chaber doors. Tests can only be carried out, as long as this loop is closed. Otherwise the test will stop and the signal generator is switched off. In addition with option -B3, the input of the active power aplifier is disconnected fro the signal generator output and terinated to 50 Oh. If the power aplifiers are connected correctly, they are also switched inactive. If no interlock shall be used due to low aplifier power or because the safety is realised in another way, pins 1 and 3 of the interlock connector have to be bridged. In addition the interlock connector provides status signals for the power aplifiers and a contact for a display Test in Progress. The interlock cable is custoer specific and therefore not delivered with the. The table shows the pin assignent for the cable, based on three power aplifiers: Signal R&S Interlock 25-pol. D-Sub Bonn PA1 Reote Control 15-pol. D-Sub Bonn PA2 Reote Control 15-pol. D-Sub Bonn PA4 Reote Control 15-pol. D-Sub Signal Type Interlock zu PA1 8, 15 8, 15 Interlock zu PA2 7, 14 8, 15 Interlock zu PA3 6, 13 8, 15 Status RF ON PA1 5 2 Status RF ON PA2 9 2 Status RF ON PA Error PA Error PA2 4 6 Error PA Interlock signal to test roo V, 0,2A to interlock loop (e.g. chaber door) Interlock fro test roo 3 Input of interlock loop Connection for signal lap Test in Progress 10, 11 Potential-free relay contact, ax. 100 V, 0,5 A Ground 2, 24, 25 7, 14 7, 14 7, 14

12 4.4 Cobined Conducted and Radiated EMS Test Syste (IEC / EN , -6) Both test systes for radiated EMS (this application note) and conducted EMS (application note 1SP31) can be cobined together using the sae R&S. Reark: The only restriction is, that -B2 for the radiated test syste (version 3 V/ or 30 V/ with 2 aplifiers) requires v12. In this case the conducted aplifier has to be external.