Information contained in this manual is the property of Com-Power Corporation. It is issued with the understanding that the material may not be reproduced or copied without the express written permission of Com-Power.
Page 4 of 16 INSTRUCTION MANUAL LI-125C LINE IMPEDANCE STABILIZATION NETWORK 2.0 P RODUCTS VAILABLE FROM OWER Coupling/Decoupling Antennas Antenna Kits Absorbing Clamps Networks (CDN) Conducted Immunity Emissions Test Current Probes Comb Generators Systems Test Systems Near-Field Impedance Stabilization Line Impedance Stabilization...
Page 5 of 16 INSTRUCTION MANUAL LI-125C LINE IMPEDANCE STABILIZATION NETWORK 3.0 P RODUCT AFETY NFORMATION 3.1 Product Hazard Symbols Definitions The hazard symbols appearing on the product exterior are defined below. The yellow triangle with an exclamation mark indicates the presence of important operating and/or maintenance (servicing) instructions in the literature accompanying the product.
Please check the contents of the shipment against the package inventory in section 3.3 to ensure that you have received all applicable items. Package Inventory Equipment, accessories, and documents supplied with the model LI-125C LISN are as follows: Calibration data and Certificate traceable to NIST.
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CAUTION: The LI-125C is based on the 50Ω/50 µH artificial mains network (AMN) circuit and component values (Figure 3) specified in ANSI C 63.4 – 2009 American National Standard for Methods of Measurement of Radio-...
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Page 8 of 16 INSTRUCTION MANUAL LI-125C LINE IMPEDANCE STABILIZATION NETWORK • DEFECTS AND ABNORMAL STRESS - Whenever it is likely that the normal operation has been impaired, make the equipment inoperable and secure it against further operation. • SITTING OR CLIMBING - Do not sit or climb upon the instrument or use it as a step or ladder.
Page 9 of 16 INSTRUCTION MANUAL LI-125C LINE IMPEDANCE STABILIZATION NETWORK 4.0 P RODUCT PECIFICATIONS Model: LI-125C Electrical Frequency range: 150 kHz to 30 MHz Compliant standards: CISPR 16-1-2 Edition 2.0: 2014-03, ANSI C63.4: 2014 Number of lines: Two lines...
CISPR, CE and other worldwide standards for commercial products. is fully compliant with the requirements of both CISPR 16-1-2 and ANSI C63.4. The LI-125C performs each of the following functions during the measurement: • provides a defined, stable impedance throughout the measurement frequency range;...
Figure 4: Front Panel 5.3.1 Power input port The Model LI-125C has a Superior Electric Shrouded pin receptacle for connection to an external DC or AC input power source. The LISN is shipped with two matching shrouded socket plug, for connection to the input power source cables.
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EUT power cable. 5.3.4 EMI measurement Port The LI-125C provides a 50 Ω N-Type (female) connector to connecting the Spectrum analyzer or EMI receiver for making conducted noise measurements. The shielding connection of the N connector shield is connected to the housing of the LISN and thus to ground.
LISN with minimal attenuation. This filter is comprised of a single stage low pass LC filter. The inductors (L) used in the LI-125C are air core type to eliminate the possibility of saturation and to provide stability.
Page 15 of 16 INSTRUCTION MANUAL LI-125C LINE IMPEDANCE STABILIZATION NETWORK LISN Isolation CISPR 16-1-2 Edition 1.2 (Isolation Limit - Minimum) Frequency (MHz) Figure 8: Typical Isolation compared to CISPR 16-1-2 requirements LISN Insertion Loss Frequency (MHz) Figure 9: Typical Insertion Loss 1 9 1 2 1 E l T o r o R d ●...
LI-125C LINE IMPEDANCE STABILIZATION NETWORK 8.0 W ARRANTY Com-Power warrants to its Customers that the products it manufactures will be free from defects in materials and workmanship for a period of three (3) years. This warranty shall not apply to: ...
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