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Summary of Contents for Com-Power LI-215A
- Page 1 Page 1 of 10 INSTRUCTION MANUAL FOR LI‐215A LINE IMPEDANCE STABILIZATION NETWORK (LISN) INSTRUCTION MANUAL For LINE IMPEDANCE STABILIZATION NETWORK Model LI‐215A 9 kHz to 30 MHz 114 OLINDA DRIVE ● BREA, CALIFORNIA 92823 ● (714) 528‐8800● fax (714) 528‐1992 ● com‐power.com REV043013 ...
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Page 2: Table Of Contents
Page 2 of 10 INSTRUCTION MANUAL FOR LI‐215A LINE IMPEDANCE STABILIZATION NETWORK (LISN) Table of Contents Introduction ...................... 3 2.0 Product Description ...................... 4 Overview ............................. 4 Standard items included: ...................... 4 3. 0 Product Specifications .................... 5 Other equipment available from Com‐Power ............ 5 3.1 4. 0 Important Safety Precautions .................. 6 5.0 Warranty ........................ 7 5.1 Maintenance ........................ 7 6.0 Front and rear panel marking .................. 8 ... -
Page 3: Introduction
Page 3 of 10 INSTRUCTION MANUAL FOR LI‐215A LINE IMPEDANCE STABILIZATION NETWORK (LISN) 1.0 Introduction This manual includes product specifications, safety precautions, product maintenance and warranty information. It also includes some basic guidance on properly configuring calibration , test setup, running test level calibrations and performing conducted emissions testing. Information contained in this manual is the property of Com‐Power Corporation. It is issued with the understanding that none of the material may be reproduced or copied without permission from Com‐Power. ... -
Page 4: Product Description
Page 4 of 10 INSTRUCTION MANUAL FOR LI‐215A LINE IMPEDANCE STABILIZATION NETWORK (LISN) 2.0 Product Description Overview The LI‐215A Line Impedance Stabilization Network was specifically designed for providing standardized line impedance during Electromagnetic Compatibility (EMC) testing in accordance with FCC, CISPR and CE requirements. In addition, it minimizes the noise generated by equipment other than the EUT to be included in the measurement. Standard items included: Equipment, accessories, and documents supplied with the model LI‐215A LISN are as follows: o User's guide. o AC Power cord. o Calibration data and Certificate traceable to NIST. Optional items o ISO‐17025 calibration data and certificate. o External transient limiter model LIT‐930 114 OLINDA DRIVE ● BREA, CALIFORNIA 92823 ● (714) 528‐8800● fax (714) 528‐1992 ● com‐power.com REV043013 ... -
Page 5: Product Specifications
Page 5 of 10 INSTRUCTION MANUAL FOR LI‐215A LINE IMPEDANCE STABILIZATION NETWORK (LISN) 3. 0 Product Specifications Model: LI‐215A Electrical Frequency Range: 9 kHz to 30 MHz Compliant Standards: CISPR 16‐1‐2 Edition 1.2: 2006‐08, ANSI C63.4: 2003 & 2009 Number of lines: Two lines Max current rating: 15 Amp AC, 10 Amp DC Max Voltage Rating: 270 VAC, 50/60 Hz (Line to Ground)/ 380 VDC Inductor type: 250 µH and 50 µH Internal line termination: Yes, 50 Ω EUT Power Connector: NEMA 5‐15R receptacle Power input connector: IEC 60320 Inlet RF measurement connector: 50Ω, N type (female) Operating Temperature: 5° C to 40° C / 40° F to 104° F Mechanical Dimensions (L x W x H): 17.5 x 13 x 7.5 inches/ 44 x 33 x 19 cm Weight: 28 lb. / 12.5 kg This equipment is designed for indoor use only. ... -
Page 6: Important Safety Precautions
Page 6 of 10 INSTRUCTION MANUAL FOR LI‐215A LINE IMPEDANCE STABILIZATION NETWORK (LISN) 4. 0 Important Safety Precautions The LISN must be securely fastened to the earth ground before making any connections to external power. Proper grounding of the LISN not only ensures correct conducted emissions measurements and also prevents potential high leakage current from presenting a hazard test personnel. To help establish proper grounding the bottom surface of the LISN is unpainted. In addition, the bottom plate has holes for securely bolting the LISN to the ground plane. Only connect EUTs with power plug with a protective earth contact should be inserted into LISN power input port. The protective action must not be negated by the use of a cheater plug or an extension cord without a protective conductor. Maintenance There are no user serviceable parts inside the unit. User modifications to the LISNs will void warranty and may also invalidate the calibration. Send the LISN to authorized Com‐Power service center if needs repair. Please visit our website at www.com‐power.com to request a return merchandise authorization number (RMA) before you send the unit in for service. Environmental conditions This equipment is designed for indoor use to be safe under the following environmental Conditions: • Temperature: 5° C to 40° C • Maximum relative humidity: 80% 114 OLINDA DRIVE ● BREA, CALIFORNIA 92823 ● (714) 528‐8800● fax (714) 528‐1992 ● com‐power.com REV043013 ... -
Page 7: Warranty
Page 7 of 10 INSTRUCTION MANUAL FOR LI‐215A LINE IMPEDANCE STABILIZATION NETWORK (LISN) 5.0 Warranty Com‐Power warrants to its Customers that the products it manufactures will be free from defects in materials and workmanship for a period of 3 years. This warranty shall not apply to: • Transport damages during shipment from your plant. • Damages due to poor packaging. • Products operated outside their specifications. • Products Improperly maintained or modified. • Consumable items such as fuses, power cords, cables, etc. • Normal wear • Calibration • Products shipped outside the United States without the prior knowlege of Com‐ Power. ... -
Page 8: Front And Rear Panel Marking
Page 8 of 10 INSTRUCTION MANUAL FOR LI‐215A LINE IMPEDANCE STABILIZATION NETWORK (LISN) 6.0 Front and rear panel marking 6.1 Power input port The Model LI‐215A has a standard IEC inlet located on the back panel for connection to external DC or AC power source. It can handle 270 VAC or 380 VDC input. See specification table on page 3 of this manual. 6.2 EUT power port The LI‐215A uses a NEMA 5‐15R (standard US wall socket) socket to power the equipment under test. 6.3 EMI measurement Port The 50 Ω Type 'N' connector located to the right of the EUT Power Port is for connecting the Spectrum analyzer or EMI receiver for making conducted noise measurements. 6.4 Test lead selection switch (Line / LI or Neutral / L2) This switch allows measurement of noise from each line. The line that is not being measured is automatically terminated internally by a 50 Ω terminator. However, the power to EUT is uninterrupted . 6.5 Grounding bolt (GND) The bolt marked 'GND' on back panel of the LISN is used for extra grounding with a braid or short wire. This is in addition to mounting the LISN on the RF ground plane using conductive bottom surface. 114 OLINDA DRIVE ● BREA, CALIFORNIA 92823 ● (714) 528‐8800● fax (714) 528‐1992 ● com‐power.com REV043013 ... -
Page 9: Lisn Theory
Page 9 of 10 INSTRUCTION MANUAL FOR LI‐215A LINE IMPEDANCE STABILIZATION NETWORK (LISN) 7.0 LISN Theory 7.1 Overview Line Impedance Stabilization Networks used supply standardized line impedance to the EUT during conducted emissions testing which is independent of the external power line impedance. The standardized impedance enables consistent readings for RF noise measurements on the power line. The model LI‐215A consists of two separate LISN networks housed in a single enclosure for testing EUTs with single phase power requirements down to 9 kHz. In addition to providing standardized impedance, the LISN also acts as a low pass filter for the power to equipment under test. The LISN blocks RF noise from the power line from reaching the equipment under test, however, the power to the equipment passes through the LISN with minimal effect. This filter comprises of two stage low pass LC filters. Therefore, there are two capacitors and two inductors for the filters. The two inductors used in the LI‐215A are air core type to eliminate the possibility of saturation and to provide stability. The LISN also provides a low impedance path for the RF noise from the EUT to the measuring equipment, thereby facilitating the measurement of the RF noise. The insertion loss of the measured noise may be significant at low frequency. Therefore, at frequencies below 400 kHz, the insertion loss correction factor must be compensated for highest accuracy noise measurement. The schematic of the LISN as well as line impedance is specified in the ANSI C63.4 as CISPR‐16‐1‐ 2 standards. A typical circuit diagram of an LISN is given in Figure 1 below. Figure 1 – Example of an equivalent LISN circuit 114 OLINDA DRIVE ● BREA, CALIFORNIA 92823 ● (714) 528‐8800● fax (714) 528‐1992 ● com‐power.com REV043013 ... -
Page 10: Typical Performance Data
Page 10 of 10 INSTRUCTION MANUAL FOR LI‐215A LINE IMPEDANCE STABILIZATION NETWORK (LISN) 8.0 Typical Performance Data CISPR 16‐1‐2 Limit ANSI 63.4 2009 Limit 0.01 Frequency (MHz) Figure 2 ‐ Impedance c0mpared to CISPR 16‐1‐2 and ANSI 63.4 requirements. ‐20 0.001 0.01 Frequency (MHz) Figure 3 ‐ Phase compared to CISPR 16‐1‐2 requirements. 114 OLINDA DRIVE ● BREA, CALIFORNIA 92823 ● (714) 528‐8800● fax (714) 528‐1992 ● com‐power.com REV043013 ...
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