North Hills Signal Processing
A division of Porta Systems
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Products: Wideband Instrumentation

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

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

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

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.
   
 
  Return Loss Measurements

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

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

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
   
 
  System Noise Susceptibility Measurements

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

   
 
  VDSL Measurements

ANSI Standard T1.424-2004 Annex F (pages 146-155)

Compliance testing of VDSL Network-End Service Splitters.

 

ANSI Standard T1.424-2004 Annex E (pages 135-145)

Compliance testing of VDSL Remote (Customer) End Service Splitters.

 
  C.I.S.P.R 17/IEC 1981 Measurements

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.

 

 

 


Application Notes:

The North Hills Wideband On-line Store facilitates convenient quick-response purchases of our popular stock items.

Access the On-Line Store

Download a Copy of Our Wideband Transformer Quick Reference Guide

 
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North Hills™ Signal Processing
A Porta Systems Company
6851 Jericho Tpke., Suite 170
Syosset, NY 11791
Tel: (516) 682-7740 Fax: (516) 682-7704

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