Wavetek 3HRV Manual de usuario descargar pdf (Pagina 2)

Acterna single-instrument solutions

The SDA-4040D Stealth Digital

Analyzer delivers a single-instrument,

“One-Box” solution to help deploy and

maintain qualityvideo and dataservices

in the HFC network. With the same

durability and measurement accuracy

as its proven SAM predecessor, the

SDA-4040D isdesigned with the

speed, spectrum, and advanced QAM

analysis to test both traditional analog

video and the latest digital formats.

The versatile combination of standard

features and available optionsenables

themetertobecustomized,orupgraded

to the SDA-5000, to meet virtuallyany

system requirements.

Analog testing

– Nonintrusive Sweepless Sweep

– RF level, fast scan, tilt

– In-service carrier-to-noise, hum,

depth of modulation

– Fastspectrum display with CTB/CSO

– Automatic/24-hour testing (FCCand

CENELEC compliant)

Return path testing

– PathTrakField View option pinpoints

return path noise

–Zero-Span Spectrum mode

– DOCSIS/DAVIC-compatible cable

modem analysis

Advanced digital testing

– digiCheckaverage power

– QAM View digital analysis option

with modulation error ratio (MER),

pre/post FECBER, constellation,

and exclusive noise/ingress under

the carrier measurement

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The Spectrum mode has the speed and

versatility to effectively troubleshoot

difficult system problems

Constellation display with MER and pre/post

FEC BER

QAM ingress feature shows noise/ingress

under an active carrier

Preparing the networkfor

digitalservices

For measurement and analysis ofdigital

TVand forward modem signals, the

new QAM View option providesa full

complement ofdigital quality measure-

ments. Included is a 64/256 QAM

constellation displaywith zoom,

average digitalpower level, bit error

rate (BER), 21 to 35 dB modulation

error ratio (MER) and noise margin

“cliff effect” parameter. An equalizer

display showsequalizer stress and

distance to fault.

In addition, an exclusive QAM Ingress

Noise mode enablestechnicians to

see ingress/noise under an active

digital carrier. This tool is invaluable

for detecting forward path ingress

otherwise hidden by conventional

spectrum views.

In-service cable modem analyzer

For bursty digitalsignals such asTDMA

technologiesused on cable modems

for reverse services, the SDA-4040D

offers two choices. The first is a one-

button cable modem analyzer and

the second uses advanced zero span

capabilities to make the measurement.

The one-button cable modem analyzer

quickly shows carrier-to-noise meas-

urements, while the zero span option

utilizes a time domain display to

enable power measurements while

the modem is in service. Both methods

are compatible with global cable

modem standards.

Single button, in-service C/N measurements on

TDMA return path cable modem signals (DOCSIS,

EuroDOCSIS, EuroModem)

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