Matrix Amplification XT2000 Especificações descarregar pdf (Página 10)

Digital Services Activation Meter (DSAM)

www.jdsu.com/nse

Comprehensive Analog and Digital Testing on the Forward Path

The DSAM architecture incorporates digital and analog testing in a

single user interface that allows technicians to select a specic channel

or a scan of channels without having to dierentiate between digital

or analog video, DOCSIS high-speed data, or voice. The active channel

plan functions as a meter conguration le as well as a channel lineup.

An extensive selection of conguration elements establishes the type

of tests to perform on each particular channel in the plan.

Also inherent within a given channel plan are Autotest congurations

for digital, analog, and DOCSIS services. Users can congure the meter

directly or through StrataSync, which manages channel plans and

measurement les for a collection of DSAM meters. Networks with a

history of multiple ownerships and diverse hardware architectures are

not a problem for the DSAM. Supervisors can create multiple channel

plans for a specied group of meters or one channel plan for the whole

network, and deploy them with parameters locked when needed.

Users select specic plans from Congure mode or, in many cases,

directly from within Measurement mode. After selecting an active plan,

technicians can check the top of the measurement screen to conrm

that it is using the correct plan. The channel plan name is included

in saved measurement les for reference. A channel plan congured

Autotest quickly runs multiple tests with only two button presses.

SmartScan™

Identifying RF and frequency response issues at the tap can

often be dicult for service or fulllment technicians due to the

large dierences in acceptable tilt and varying design power

levels. SmartScan helps technicians nd issues at the tap by

providing a simple normalized view that identies peak-to-

valley and tilt issues. Patent pending SmartScan technology

provides a simple graphical view that helps eliminate technician

interpretation errors and highlights RF response issues by

automatically calculating and compensating for tilt and varying

channel types. SmartScan peak-to-valley, tilt compensation

and individual channel power pass/fail limits aid technicians

in identifying and escalating problems from the tap or drop.

SmartScan is optional on the DSAM-2000 and -2300, and is

standard on the DSAM-3300 and -6300.

SmartScan provides a simple view to help locate RF issues

between the tap and CPE.

DOCSIS Service Testing

The DSAM has a built-in DOCSIS 3.0-ready cable modem for perform-

ing quick and accurate DOCSIS RF and IP tests. Technicians can use the

DSAM to test existing DOCSIS 1.X and 2.0 system performance. With the

DOCSIS 3.0 option, the DSAM can test a full DOCSIS 3.0 “gold” system

complete with 8 bonded downstreams and 4 bonded upstream signals.

Summary view quickly identies overall performance.

Range and Registration

The DSAM can test ranging and registration with the headend

cable modem termination system (CMTS) to establish the required

conguration parameters and obtain a valid IP address on the network.

The DSAM’s range and registration test veries that a specic portion of

the line can support high-speed data transmission. Range test results

show how much margin remains before either up or downstream

communication becomes disabled. Registration test results validate that

the CMTS is distributing correct conguration les and IP addresses.

DOCSIS IP Test

The DSAM performs IP tests, including packet loss, throughput, and

ping, over the DOCSIS connection. The displayed results indicate

problems that need to be located and xed and those that should

report as headend or IP troubles.

VoIPCheck Option

With VoIPCheck, the DSAM can test VoIP services independent of the

implemented VoIP specication. VoIPCheck can segment RF issues from

IP issues, helping to eliminate nger pointing. The measurement displays

packet statistics; including packet loss, jitter, and delay, as well as call-

quality results such as R-value and mean opinion score (MOS). With its

in-depth results analysis capability, the DSAM can determine the source

of call-quality problems, expediting the troubleshooting process.

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