Fisher CISPR32 ISN's
Fischer CISPR 32 ISNs (Impedance Stabilisation Networks) are specialised coupling and decoupling devices designed for the measurement of conducted asymmetric common mode radio interference voltages in information technology equipment (ITE), in accordance with the CISPR 32 standard.
Fischer Custom Communications, Inc. provides a range of ISNs that fully meet CISPR 32 requirements, with models available for testing telecom ITEs featuring one, two, and four balanced pairs. These devices are engineered to deliver accurate and repeatable measurements across a variety of test configurations.
Each ISN is designed to comply with key performance criteria specified within the standard, including longitudinal conversion loss, common mode impedance, phase characteristics, decoupling isolation, and voltage division factor. This ensures confidence in conducted emissions testing and supports consistent, standards-compliant results.
Fischer CISPR 32 ISNs Datasheet Links
| Product | Common Mode Impedance | Connectors (Nominal) | Frequency (Nominal) | Overall Dimensions | Phase Angle | Voltage Division Factor (VDF) |
|---|---|---|---|---|---|---|
| F-110729-1057-1 | 150+/-20ohms | -EUT: D-sub 25 pin female AE: RJ45 | 150 kHz - 30 MHz | 229 x 152 x 127 | 0+/-20 degrees | 9.5dB+/-1dB |
Frequently Asked Questions
What are CISPR 32 ISNs used for?
ISNs are used to measure conducted common mode disturbances on telecom ports in accordance with CISPR 32.
What types of configurations are available?
ISNs are available for one, two and four pair telecom configurations depending on the application.
Can EMC Hire help specify ISNs?
Yes. EMC Hire can recommend suitable ISNs and provide datasheets and technical guidance.
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