EMCO 3850-2 Instruction Manual 电路图.pdf

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1、 Model 3850/2 Line Impedance Stabilization Network (LISN) User Manual RadioFans.CN 收音机爱 好者资料库 ii | ETS-Lindgren L.P. reserves the right to make changes to any product described herein in order to improve function, design, or for any other reason. Nothing contained herein shall constitute ETS-Lindgre

2、n L.P. assuming any liability whatsoever arising out of the application or use of any product or circuit described herein. ETS-Lindgren L.P. does not convey any license under its patent rights or the rights of others. Copyright 19962009 by ETS-Lindgren L.P. All Rights Reserved. No part of this docum

3、ent may be copied by any means without written permission from ETS-Lindgren L.P. Trademarks used in this document: The ETS-Lindgren logo is a trademark of ETS-Lindgren L.P. Revision Record | MANUAL 3850/2 | Part #399139, Rev. E Revision Description Date AC Initial Release; updates December, 1996 D R

4、ebrand October, 2008 E Added product photos February, 2009 RadioFans.CN 收音机爱 好者资料库 | iii Table of Contents Notes, Cautions, and Warnings . v 1.0 Introduction . 7 ETS-Lindgren Product Information Bulletin . 7 2.0 Maintenance . 9 Service Procedures . 9 3.0 Specifications . 11 Electrical Specifications

5、 . 11 Physical Specifications . 11 4.0 Installation . 13 Power . 14 Equipment Under Test . 16 Spectrum Analyzer / Receiver . 17 Appendix A: Warranty . 19 RadioFans.CN 收音机爱 好者资料库 iv | This page intentionally left blank. | v Notes, Cautions, and Warnings Note: Denotes helpful information intended to p

6、rovide tips for better use of the product. Caution: Denotes a hazard. Failure to follow instructions could result in minor personal injury and/or property damage. Included text gives proper procedures. Warning: Denotes a hazard. Failure to follow instructions could result in SEVERE personal injury a

7、nd/or property damage. Included text gives proper procedures. See the ETS-Lindgren Product Information Bulletin for safety, regulatory, and other product marking information. vi | This page intentionally left blank. Introduction | 7 1.0 Introduction The ETS-Lindgren Model 3850/2 Line Impedance Stabi

8、lization Network (LISN) is a two-channel low pass filter network used for conducted emissions measurement. The Model 3850/2 is designed to isolate the equipment under test from an external power source while steering any radio frequency signals from the power line to a 50-ohm port. The conducted emi

9、ssions measurements may be made in accordance with regulatory compliance standards. ETS-Lindgren Product Information Bulletin See the ETS-Lindgren Product Information Bulletin included with your shipment for the following: Warranty information Safety, regulatory, and other product marking informatio

10、n Steps to receive your shipment Steps to return a component for service ETS-Lindgren calibration service ETS-Lindgren contact information 8 | Introduction This page intentionally left blank. Maintenance | 9 2.0 Maintenance Before performing any maintenance, follow the safety information in the ETS-

11、Lindgren Product Information Bulletin included with your shipment. Maintenance of the Model 3850/2 is limited to external components such as cables or connectors. Clean the exterior of the cabinet using a damp cloth and mild cleaner. Always unplug the unit before cleaning. To prevent electrical shoc

12、k, do not remove cover. If you have any questions concerning maintenance, contact ETS-Lindgren Customer Service. Service Procedures For the steps to return a system or system component to ETS-Lindgren for service, see the Product Information Bulletin included with your shipment. 10 | Maintenance Thi

13、s page intentionally left blank. Specifications | 11 3.0 Specifications Electrical Specifications Frequency Range: 9 kHz 100 MHz (VDE 0876 specified curve 20% Lines Plus Ground: 2 Network Inductance: 50 H / 250 H Network Impedance: 50 Current Rating: 50 Amperes Maximum AC Voltage: 250 VAC line-to-gr

14、ound 440 VAC line-to-line Input Connectors: 50 Amperes Output Connectors: 50 Amperes Monitor Port: BNC 1 per line Environmental Installation: Indoor use only Altitude: 15000 ft (4572 m) max Temperature: 0C to 40C (32F to 104F) Relative Humidity: 80% up to 31C (87.8F) decreasing linearly to 50% at 40

15、C (104F) Physical Specifications Height: 34.9 mm (13.7 in) Width: 51.4 mm (20.2 in) Depth: 57.1 mm (22.5 in) Weight: 20.4 kg (44.97 lb) 12 | Specifications This page intentionally left blank. Installation | 13 4.0 Installation Before connecting any components, follow the safety information in the ET

16、S-Lindgren Product Information Bulletin included with your shipment. Overcurrent protection is not provided in the Model 3850/2. The unit must be connected to a power mains with properly rated mains protection. The Model 3850/2 is provided with a protective earthing connection. The unit should only

17、be connected to a mains source which utilizes a protective earth conductor. Due to the high leakage current to ground inherent in this type of equipment, it is necessary to properly connect the Model 3850/2 to an appropriate earthing point on the power mains prior to energizing. This earthing point

18、should be determined by an electrician authorized to perform such work by appropriate code or law. Any interruption of the protective conductor inside or outside of the unit is likely to make the Model 3850/2 dangerous. Intentional interruption is prohibited. The Model 3850/2 is provided with resist

19、ors to help bleed off high voltage transients, but it is advisable to connect the input and output connectors to their proper power lines and loads before connecting the monitor port to the measurement instrumentation; otherwise, power surges or transients can damage the test instrumentation mixers

20、or attenuators. 14 | Installation Power Model 3850/2 Back Panel The Model 3850/2 Line Impedance Stabilization Network (LISN) is nominally designed for a 50-ampere current capacity. Maximum line-to-line voltage must not exceed the voltage rating of the power connectors provided on the input and outpu

21、t of the unit. See Specifications on page 11 for the applicable maximum value. Installation | 15 The input power connection to the line side of the Model 3850/2 is made through the red and black pin receptacles labeled L1 and L2 on the back panel. Power to the Model 3850/2 should be through a proper

22、ly rated circuit breaker and/or a switch which can remove power from the unit in case of emergency. This device should be installed near the Model 3850/2. The green pin receptacle and the brass lug terminal are both connected to chassis ground. Prior to energizing the Model 3850/2, the earth connect

23、ion from the power mains must be connected to the green pin receptacle. The brass lug terminal should be bonded to the ground plane of the conducted emissions test setup. This line does not provide high frequency isolation and should not carry any voltage above earth potential. 16 | Installation Equ

24、ipment Under Test Model 3850/2 Front Panel The Equipment Under Test (EUT) is connected to the Model 3850/2 through the red and black socket receptacles located on the front panel. The ground connection to the EUT is made through the green socket receptacle. In normal operation, the radio frequency b

25、onding stud on the front panel should be connected to the ground plane of the conducted emissions test setup by a grounding strap or braid. Installation | 17 Spectrum Analyzer / Receiver Use the BNC connectors on the front panel to connect the spectrum analyzer or EMI receiver. See page 16 for a vie

26、w of the front panel connectors. The monitor port which is not being monitored should be terminated into a coaxial 50-ohm terminator. Connect the input and output terminals to their proper mains connections and EUT connections before connecting the monitor port to the measurement instrumentation; ot

27、herwise, power surges may damage the test instrumentation mixers or attenuators. Removal of a terminator and connection to the BNC receptacle will not generate power surges. When the power is to be disconnected, remove the coaxial connection to the measurement instrumentation first to avoid possible

28、 damage. 18 | Installation This page intentionally left blank. Warranty | 19 Appendix A: Warranty See the Product Information Bulletin included with your shipment for the complete ETS-Lindgren warranty for your Model 3850/2 Line Impedance Stabilization Network (LISN). DURATION OF WARRANTIES FOR MODEL 3850/2 All product warranties, except the warranty of title, and all remedies for warranty failures are limited to two years. Product Warranted Duration of Warranty Period Model 3850/2 Line Impedance Stabilization Network (LISN) 2 Years