Test-Um VALIDATOR-NT NT955 User Manual

Test-Um NT955 Series
Ethernet Cable Certification

Speed and Performance Certification uses digital technology centered on

the latest advances in Gigabit Ethernet Transceivers. These new highly

integrated chips are capable of testing for noise in the network, faults in

the cabling wiring and even generating live data packets that stress the

cables to make sure they are able to support the equipment connected to

them. This is the heart of the Validator-NT Certifier.

To do

Speed and Performance Certification Validator-NT measures

three specific levels of cable and connector conditions. Unless all three

of these levels are tested it is impossible to accurately determine a cable

run’s capability.

1. Measure

TIA 568 Interconnect Specifications such as Opens,

Shorts, Miswires, Split Pairs and Reversals. The distance to

faults and length of cable runs are accurately pinpointed with

the use of both TDR and capacitance length measurement

techniques. The Validator-NT measures length up to a maximum

of 1500 feet or 457 meters.

2. Measure

Pertinent Parameters of Noise and propagation delay.

NEXT, Return Loss, Attenuation, Amplitude and other noise

factors are tested using Signal to Noise Ratio measurements.

SKEW is measured using TDR (Time Domain Reflectometry) to

insure acceptable signal time delay differences between pairs for

Gigabit use.

3. Conduct a

Bit Error Rate Test. BERT sends actual data

packets down specified cable runs at defined data rates and

quantities. Random code data is generated and checked for

errors at the maximum throughput of the link, full duplex.

Validator

Introduction

Validator

Introduction