North Hills has developed a complete series of Instrumentation
Bridges and accessories to characterize communication systems and
networks. These products simplify the measurements and easily interface
with 50 and 75 ohm network analyzers.
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Balance to Ground Measurements
 
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LBB Series Longitudinal
Balance
Bridges
LCL and LCTL balance measurements to ground per ITU-T Recommendation O.9
Interface
with 50 and 75ohm network analyzers.
Balanced impedances 100, 110, 120, 135,
150ohm
Models cover 10kHz - 300MHz
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CMI Series of Common Mode Injectors
Apply longitudinal signals to balanced
networks in two-port balance tests.
Measure common mode rejection of baluns.
50 and 75ohm coax input impedance.
Balanced impedances 100, 110, 120, 135, 150ohm
Models cover 10kHz -300MHz |
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800 MHz Longitudinal
Balance Bridge
The NH16455 Longitudinal Balance Bridge has an extended frequency range
to 800 MHz. The extended frequency range allows this LBB bridge to measure
the degree of unbalance to ground on balanced systems, cables and components
such as CAT 6 or CAT 7 cables or patch cords per ITU-T Recommendation 0.9. |
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Return Loss Measurements
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RLB Series Return Loss Bridges for Balanced
Networks
Interface
with 50 and 75ohm network analyzers
Measure return loss for balanced
impedances 100, 110, 120, 135, 150ohm
Models cover 10kHz - 300MHz
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RLC Series Return Loss Bridges for
Coax Networks
Interface with 50 and 75ohm network analyzers
Measure return loss for coax impedances: 50, 75, 93ohm.
Models cover 10kHz - 300MHz |
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RLT Series Return Loss Bridges for Twinax
Balanced Networks
Interface with 50 and 75ohm network analyzers
Measure return loss for balanced impedances 78, 95, 100, 124, 150ohm
Models cover 10kHz - 300MHz |
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System Noise Susceptibility Measurements
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BF Series Unbalanced to Highly Balanced Signal Converters with
Common Mode Injectors
Measure system susceptibility to noise and interference
Convert signals
from a coax source to a highly balanced output.
50ohm coax input impedance.
Balanced outputs 100, 110, 120, 135, 150ohm
Models cover 10kHz - 100MHz |
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VDSL Measurements
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ANSI Standard T1.424-2004 Annex F (pages 146-155)
Compliance testing of VDSL Network-End Service Splitters.
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ANSI
Standard T1.424-2004 Annex E (pages 135-145)
Compliance testing of VDSL Remote (Customer) End Service Splitters. |
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C.I.S.P.R 17/IEC 1981 Measurements
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Balun Transformers for C.I.S.P.R 17/IEC Measurements
The NH16434 and NH16435 are optimized for C.I.S.P.R 17/IEC measurements.
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