Comtech EF Data CDD-880 Spezifikationen PDF herunterladen (Seite 81)

CDD-880 Multi Receiver Router Revision 1

Ethernet-based Remote Product Management MN-CDD880

5–21

Individual Demodulator Settings

Theacceptable/validoperatingrangesforitemsinthissectionareprovidedinparentheses.



The upper range of Data and Symbol Rate selection requires activation of the

‘RECEIVEDATARATE’FASToption.

The Web Server Interface polls current operations and populates this  section with the

configured demodulators (i.e., Demod #1 through Demod #12). If a slot is polled as empty or

otherwiseunrecognizable,amessageisdisplayed–e.g.,Dem

od#Xisnotinstalled–inplaceof

aconfigurablerowofparameters.



Duringoperation,someparametersareautomaticallycontrolled–eitherbytheACMalgorithm

or by the VMS– whenexecuting dSCPC switches. During these times, some page functionality

becomesdisabledandaffectedfeaturesdisplayi

nformationonaread‐onlybasis.



Foreach operatingdemodulator,note thefollowing  selections onaper‐columnbasisfrom left

toright:



• Demod # – This is the available "FILLED" demodulator slot (automatically assigned in pairs

pereachinstalleddualdemodulatorcard).



• Demod Enable – Click this option bu

tton to enable the slot. Click [Submit] to execute this

operationalchange.



• RxSymbolRate(16ksps‐4.5Mbps)–Enterthesymbolrate,andthenclick[Submit]tosave.



• RxDataRate(16kbps‐15.350Mbps)–Enterthedatarate,andthen cl

ick[Submit]tosave.



WhenAdaptiveCodingandModulation(ACM)issettoEnable,theDataRate

is set automatically (manual configuration of Data Rate is disabled), and the

appearancesoftheRxDataRateandRxMODCODcolumnschangeasfollows:



• Frequency(950‐2150)–EntertheRxfrequency,inMHz.



• Rx MODCOD – Use the drop‐do

wn menu to select the demodulation type and FEC rate

(MODCOD).Selectionsareasfollows:



o VersaFEC – QPSK 0.488 o VersaFEC – 8-QAM 0.642 o VersaFEC – 16-QAM 0.829

o VersaFEC – QPSK 0.533 o VersaFEC – 8-QAM 0.711 o VersaFEC – 16-QAM 0.853

o VersaFEC – QPSK 0.631 o VersaFEC – 8-QAM 0.780

o VersaFEC – QPSK 0.706 o VersaFEC – 16-QAM 0.731

o VersaFEC – QPSK 0.803 o VersaFEC – 16-QAM 0.780

1 2 ... 76 77 78 79 80 81 82 83 84 85 86 ... 123 124

Kommentare zu diesen Handbüchern

Keine Kommentare

Comtech EF Data CDD-880 Spezifikationen Seite 81

Kommentare zu diesen Handbüchern

Verwandte Produkte und Handbücher für Vernetzung Comtech EF Data CDD-880