CISPR 22 ISN

CISPR 22 defines ISN’s as specialized coupling decoupling devices used to measure the conducted asymmetric common mode radio interference voltages of an ITE. Fischer Custom Communications, Inc. ISN’s meet the requirements of CISPR 22 and we offer models for measuring conducted emissions on single, two and four balanced pair telecom ITE’s. All meet the requirements for Longitudinal Conversion Loss, common mode impedance, phase, decoupling isolation and voltage division factor.

Model F-071115-1057-1-09 can be used to test single, two, three and four balanced pair ITE’s. The new F-110729-1057-1-09 is for 4 active balanced pairs of CAT 5 and CAT 5e with a POE up to 500 miliampere per wire (1 ampere per pair).

Product Description

CISPR 22 ISN

Product
Common Mode Impedance
Connectors
Frequency
Overall Dimensions (mm)
Phase Angle
Voltage Division Factor (VDF)

F-120601-1057-1

150+/-20ohms RJ45 AE- RJ45 150 kHz - 30 MHz 298 x 127 x 76 0+/-20 degress 9.5dB+/-1dB

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

F-110801-1057-1

150+/-20ohms EUT: D-sub 25 pin female AE: RJ45 150 kHz - 30 MHz 254 x 127 x 76 0+/-20 degrees 9.5dB+/-1dB

F-110801-1057-2

150+/-20ohms EUT: RJ45 AE: RJ45 150 kHz - 30 MHz 229 x 152 x 127 0+/-20 degrees 9.5dB+/-1dB

FCC-TLISN-T2-02-09

150±20Ω EUT: D-sub 25 female AE: D-sub 25 female 150 kHz - 30 MHz 100 x 100 x 235 0±20° 9.5dB±1dB