ISN / T-Networks
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NTFM 8131 AThe "Impedance Stabilisation Network NTFM 8131 A", also known as T-ISN, is used to measure the asymmetrical interference voltage on symmetrical data or telecommunication lines. Since 2002 the T ISN is used for measurements of the asymmetrical disturbance voltage according EN 55015 (electrical lighting equipment). Furthermore it can be used for measurements according to CISPR 32. In contrast to the widely used T-ISN the NTFM 8131 A was designed to withstand 400 V AC a maximum current of 3 A.
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NTFM 8158
ISN T8 CAT6 (LCL = 75 dB) acc. CISPR 22 edition 5.2 figure D.3. for up to 4 pairs UTP.
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8158 Mag Base
Magnetic fixture for NTFM 8158
The magnetic fixture „8158 Magbase“ can be used to fix a NTFM 8158, a CAT5 8158 or a CAT3 8158 to a steel wall vertically. It is capable of holding approximately 2.5 kg whereas the ISN mentioned above weigh not even 500 g.
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CAT5 8158
ISN T8 CAT5 (LCL = 65 dB) acc. CISPR 22 edition 5.2, figure D.3. for up to 4 pairs UTP.
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CAT3 8158
ISN T8 CAT3 (LCL = 55 dB) acc. CISPR 22 edition 5.2, figure D.3. for up to 4 pairs UTP.
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ISN S8
ISN for screened RJ45 or RJ11 connections, 2, 4 or 8 wire, acc. D.11 CISPR 22 Ed.5.2.
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ISN S1
ISN acc. CISPR 22 Ed.5.5:2006, Annex D, D9 for coaxial lines
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