Cm t s – Atec Acterna-DSAM-2500 Series User Manual

Page 2

DOCSIS/EuroDOCSIS install

capabilities include:

– In-service ranging with network CMTS

to prove physical upstream path

– Transmit margin displayed and

compared with limits for easy

Pass/Fail results

– Downstream QAM measurements

(average power level, MER/EVM,

and pre- and post-FEC BER tested

against limits)

– Multiple DOCSIS carriers handled

in a single autotest selection

– Configuration settings that allow

test flexibility based on network

deployment procedures:

“Range” stops at physical layer

verification results

“Range+Register” also returns IP

addresses for cable modem and

network servers

DSAM ranging capability uses the

DOCSIS transmission paths, down-

stream and upstream, to verify

performance from the install location.

Test results are compared against

limits set by network engineering.

DSAM registration capability fully

connects the DSAM internal cable

modem to the DOCSIS network.

Results display shows assigned IP

and network IP addresses as well as

any error messages encountered.

These tests assure network connec-

tivity and sufficient physical layer

margins for reliable performance

even after the installer leaves the job,

thus resulting in fewer callbacks and

happier customers.

Digital Service Activation Meter (DSAM)
is a lightweight, durable, handheld
meter that includes extensive analog
and digital capabilities

SLM (signal level meter)

capabilities include:

– Ingress spectrum scan with zoom

for analyzing local upstream ingress

– Up to 12-channel miniscan that

can contain mix of analog and

digital channels

– Extensive channel plan flexibility to

cover analog, digital and DOCSIS

channel parameters all in one plan

– Multiple video standards include

NTSC, PAL, SECAM – including

scrambled formats

– Multiple channel types include

single and dual audio, CW, QAM,

QPSK and others

Additional configurable parameters

include QAM standard (selectable,

ITU J.83 annex A, B or C), symbol rates,

inverted spectrum, signal bandwidths

and audio offset. These provide a high

degree of flexibility on hybrid systems

that mix modulation technologies and

video standards.

LAN/WAN

Physical path

verification

DSAM-2500

Registration and

other network

communications