Contents

	Welcome Note
	Migration to IP Core Network
	Laser Tuned Jacks
	Hardened Connectors vs. Field Splicing

Laser Tuned Jacks

The Inside Story

The ADC KRONE KM8 jack has been a highly recognized and appreciated product within our portfolio, almost synonymous with
ADC KRONE itself.

The most evident and famous feature of the Jack is the use of LSA plus technology.

LSA Plus technology is used throughout
ADC KRONE’s TrueNet^® portfolio – in jacks, panels and termination blocks.

The 45° contact provides torsion grip to the copper wire and allows for a two point contact thus allowing for multiple re-terminations without wearing out the lug or cutting into the wire. The receptacle for the copper cable allows for the pairs to have optimum spacing and ensures correct unsheathed length.

However the feature that makes our Jack almost an industry standard is the seamless performance it offers. The impedance of the Jacks is closed matched with very low impedance variance.

How this is done is an interesting inside story.

It begins with the PCB found inside every jack. Any electrical system carrying current has impedance composed of Resistive and Reactive components. The frequency independent component is called Resistance (R) and the frequency dependant imaginary portion is called Capacitive (XC) and Inductive (XL) reactance. This is defined as

Z = R + XC + XL
Z = R +1/2πfC +2πfL
Where f = frequency in hertz (Hz) , C= capacitance in farads (F), L= inductance in henrys (H)

For normal electrical circuits functioning at 50/60 Hz, the reactance is negligible. As frequencies move from Cat5e (100MHz), Cat6 (250MHz) and Cat 6A (500 MHz), it is very apparent from the above formula that reactance becomes vital and unlike resistance, reactance is not linear. For matching these impedances (Refer stripline and microstripline waveguides) ADC KRONE intentionally introduces extremely small reactance on the PCB inside the jack.

The Printed Circuit board consists of a Glass Epoxy substrate with copper coating on either side. The substrate serves as the dielectric and with a copper layer on either side...We have a capacitor!

Such reactance is extremely small and is dependant on the copper pattern and how precisely it is constructed during the PCB Manufacturing process. Unfortunately the PCB manufacturing process does not always give such high precision. This is the reason why many jacks available on the market will be unable to deliver consistent performance both during independent testing as well during channel tests. Some may pass during lab tests where the PCB boards are developed with high precision PCB Prototype house, however when it comes to mass production it is quite another story.

ADC KRONE provides a Zero Bit Error Warranty in addition to its performance warranty. We understand that this requires us to offer a superior quality of products; ‘beyond the lab’ and at the customer location.

Using a million-dollar automated process in Berlin, Germany, each PCB is
laser trimmed to deliver a level of precise performance that few can duplicate either with similar products or grey market copies. Laser trimming each board guarantees performance to 500 MHz and impedance matching that give you the same level of performance that we develop in our Research and Development houses to our customer’s premises. We call the process Laser Tuning
While our impedance is well matched our Quality is unmatched!

For more information write to truenetindia@adckrone.com or visit www.adckrone.com/in

Kenelm Lopes
Assistant Manager-Product Management (Enterprise)