BTC Z22 Manual do Utilizador descarregar pdf (Página 27)

Version 02.00, November 2014

Rohde & Schwarz R&S

®

BTC Broadcast Test Center 27

Cable standards

DVB-C2 (R&S

®

BTC-K517 option)

DVB-C2

in line with EN 302769

Input

transport stream

interface

ASI, SPI

format

MPEG-2 TS

PLP

number

1 to 4 PLPs

payload

transport stream or test signal

ID

settable

type

normal data PLP

bundling

supported

null packet deletion

supported

ISSY

off/short/long

Modulation

modulation

OFDM

mode

16QAM, 64QAM, 256QAM, 1024QAM,

4096QAM

channel raster bandwidth

6 MHz, 8 MHz

bundled channels

number

1 and 2 channels

bandwidth

5.71 MHz, 7.61 MHz and

11.42 MHz, 15.22 MHz

MER

> 40 dB

21

modulation frequency response

< ±0.2 dB

shoulder attenuation

> 60 dB

Coding

baseband mode

normal (NM), high efficiency (HEM)

guard interval

1/64, 1/128

BICM

FEC frame

normal (64k), short (16k)

code rate (concatenated BCH/LDPC)

2/3, 3/4, 4/5, 5/6, 8/9 (short FEC frame),

9/10 (normal FEC frame)

data slice

number

1 to 4 data slices

ID

settable

packets

type 1, type 2, stuffing

tune position

settable

tune offset

left, right, settable

FEC frame header type

robust, high efficiency

(data slice packet type 2)

number of XFEC frames

1 and 2 (data slice packet type 2)

number of PLPs

1 to 4 PLPs per data slice

time interleaving

none, 4 symbols, 8 symbols, 16 symbols

notch types

narrowband, broadband

C2 system

C2 system ID

settable

network ID

settable

layer 1 part 2 signaling

time interleaving

none, best fit, 4 symbols, 8 symbols

code rate (concatenated BCH/LDPC)

1/2 (16k LDPC)

mode

16QAM

Test signals

TS test packet with settable payload

(PRBS ITU-T O.151, 0x00, 0xFF) (see

“Internal test signals”)

21

With internal test signals.

1 2 ... 22 23 24 25 26 27 28 29 30 31 32 ... 63 64

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