BTC Z22 Manual do Utilizador descarregar pdf (Página 26)

Version 02.00, November 2014

26 Rohde & Schwarz R&S

®

BTC Broadcast Test Center

CMMB (R&S

®

BTC-K515 option)

CMMB

in line with GY/T 220.1-2006

Modulation

mode

COFDM

bandwidth

2 MHz, 8 MHz

modulation frequency response

<0,2 dB

shoulder attenuation

>50 dB

Coding

FFT mode

1K, 4K

scrambling mode

0 to 7

number of timeslots

up to 40

services

up to 40

Reed Solomon

(240,240)

(240,224)

(240,192)

(240,176)

byte interleaver mode

1 to 3

LDPC

1/2, 3/4

constellation

BPSK, QPSK, 16QAM

Special functions

Reed Solomon, byte interleaver, bit

interleaver, scrambling

can be switched off

ISDB-T/ISDB-T

B

/ISDB-T

SB

(R&S

®

BTC-K506 option)

ISDB-T

in line with ARIB STD-B31 version 1.7

ISDB-T

B

in line with Brazilian standard

ISDB-T

SB

in line with ARIB STD-B29

Modulation

mode

OFDM

bandwidth

6/7/8 MHz (variable: ±1000 ppm)

number of segments

ARIB STD-B31

13

ARIB STD-B29

1, 3

MER

> 42 dB

modulation frequency response

< 0.2 dB

shoulder attenuation

> 60 dB

Coding

FFT mode

2k, 4k and 8k

number of layers

1 to 3

constellation

DQPSK, QPSK, 16QAM, 64QAM

code rate

1/2, 2/3, 3/4, 5/6, 7/8

guard interval

1/4, 1/8, 1/16, 1/32

time interleaver

ISDB-T

0, 1, 2, 4, 8, 16

ISDB-T

SB

0, 1, 2, 4, 8, 16, 32

Earthquake early warning (EEW)

in line with ARIB STD-B31 version 2.2

transmission channel

AC carriers of segment No. 0

area information

56 prefectures

epicenter information

ID, longitude, latitude, depth, occurrence

time

Special functions

scrambler, Reed-Solomon,

byte interleaver, bit interleaver,

frequency interleaver, guard interval,

OFDM segments

can be switched off

AC information

PRBS, All 1

TX parameter switching indicator,

TMCC next

static settings for test

Single-frequency network

network mode

MFN, SFN

control

IIP, manual

Test signals

TS test packet (see “Internal test signals”)

1 2 ... 21 22 23 24 25 26 27 28 29 30 31 ... 63 64

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