Ambit U10C035 Průvodce řešením problémů stáhnout pdf (Strana 26)

| Ubee Interactive 2011

A.3 MODEM  CABLE MODEM: DOWNSTREAM

Label

Description

Frequency

Displays the downstream channel frequency on which the

cable modem is scanning.

Lock Status

Displays if the cable modem succeeded in locking to a

downstream channel.

Channel ID

Displays the downstream channel ID.

Modulation

Displays the modulation method that’s required for the

downstream channel to lock on to by the cable modem.

This method is determined by the service provider.

Symbol Rate

Displays the symbol rate. The current cable modem

downstream symbol rates are: QAM64 is 5056941

sym/sec, QAM256 is 5360537 sym/sec.

Interleave

Depth

Displays the current cable modem downstream Interleave

depth (4/8/16/32/64/128/other).

Power Level

Displays the receiver power level after ranging process.

RxMER

The Receiver Modulation Error Ratio is used to quantify

the performance of a digital radio receiver in a

communications system using digital modulation.

Correctable

Codewords

Displays the quantity of codewords which are correctable.

Uncorrectable

Codewords

Displays the quantity of codewords which are not

correctable.

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Ambit U10C035 Průvodce řešením problémů Strana 26