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CM1000 cable modems systems analyzer is designed for detail testing
and fault detection in DOCSIS cable modems systems. In contrast
to other devices which use for DOCSIS networks analysis the digital signals
not related to this technology, CM1000 analyzer uses built-in DOCSIS
cable modem dedicated to wide testing of incoming and outgoing
streams.
Analyzer has modular architecture. There are some plug-n modules produced for
it :
- Signal level meter providing full measure of analog and digital
signal ; one, two, five channel and full specter display ;
tilt measure ; peak/cavity and adaptive characteristics with
neighbor channels measure ; threshold Pass/Fail measure.
- CM1000CE which provides DOCSIS systems measures at 6 &
8 MHz frequencies certificated according to ITU for international
market.
- Reflection meter for CE4000 type cable investigation defining the
place of cable damage which causes adaptive interference, signal leak and
its level lowing. It also allows measure distances and cable
attenuations, return loss and total attenuation. There are possibilities
of storing measures results, output data stored, uploading them
to PC, working with VOP integrated files and measuring attenuation for
general purpose coaxial cables in cable TV networks. Reflection
meter has color display.
CM1000 is equipped with built-in modem providing testing incoming
and outgoing data streams.
When testing CM1000 device links to modem’s CMTS and provides
measuring quality parameters of signal transmission path in both
directions. Beside traditional measures digital signal parameters like MER, BER,
signal level and analysis of modulated signals distortions in right
direction the device due to patented technology allows measure BkER
in return direction without involving headend station equipment.
Using CM1000’s color display operator is able define
link’s conformity to minimally affordable requirements at first
glance. Checking different network’s points technical personnel can quickly
find out which components should be replaced to ensure optimal quality
parameters.
CM1000 Cable Modem Systems Analyzer :
INCOMING STREAM ANALYSIS :
- 64/256 QAM measure
- QAM modulation diagram analysis with distortions diagnostics
- MER measure
- BER measure before and after FEC
- Digital signal level measure
- Analog signal level measure (option).
OUTGOING STREAM ANALYSIS :
- Transmitted signal’s power and attenuation measure
- Connection to PC via 10/100Base-T port
- Digital video signal’s parameters measure
- Status window display during connection to modem
- Modular measuring platform
- BkER measure in return direction.
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