Instruction Manual

DOCSIS/EuroDOCSISinstall
capabilitiesinclude:
– In-service ranging with networkCMTS
to prove physical upstream path
– Transmit margin displayed and
compared with limitsfor easy
Pass/Fail results
– Downstream QAM measurements
(average power level, MER/EVM,
and pre- and post-FECBER tested
against limits)
– Multiple DOCSIScarriers 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
addressesfor cable modem and
network servers
DSAM ranging capability uses the
DOCSIStransmission paths, down-
stream and upstream, to verify
performance from the install location.
Test results are compared against
limits set by networkengineering.
DSAM registration capability fully
connects the DSAM internal cable
modem to the DOCSISnetwork.
Results display shows assigned IP
and networkIP addresses aswell as
any error messages encountered.
These testsassurenetwork 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 (signallevel meter)
capabilities include:
– Ingress spectrum scan with zoom
for analyzing local upstream ingress
– Up to 12-channel miniscan that
can contain mixof analog and
digital channels
– Extensive channel plan flexibility to
cover analog, digital and DOCSIS
channel parameters allin one plan
– Multiple video standards include
NTSC, PAL, SECAM – including
scrambled formats
– Multiple channel types include
single and dual audio, CW, QAM,
QPSKand 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 mixmodulation technologies and
video standards.
LAN/WAN
Physical path
verification
DSAM-2500
Registration and
other network
communications
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