BTC Z22 Manual de usuario descargar pdf (Pagina 25)

Version 02.00, November 2014

Rohde & Schwarz R&S

BTC Broadcast Test Center 25

T-DMB/DAB/DAB+ (R&S

BTC-K511 option)

The realtime coder supports T-DMB, DAB and DAB+. To simulate transmissions with multipath reception, the R&S

BTC must be

equipped with the R&S

BTC-B1031 or R&S

BTC-B1032 fading simulator option and also the R&S

BTC-K1032 software option, which

supports the Gaussian fading profile.

T-DMB/DAB/DAB+

in line with T-DMB/EN 300401,

Korea/Europe

Transmission

modulation

COFDM

mode

I, II, III, IV

bandwidth

1.536 MHz

MER

> 40 dB

modulation frequency response

< 0.2 dB

shoulder attenuation

> 45 dB

Single-frequency network

network mode

SFN, MFN

control

MID, manual

Special functions

external ETI data stream

requires R&S

BTC-B11 option

PRBS

can be inserted into a subchannel

ATSC 8VSB, ATSC-M/H (R&S

BTC-K518 option)

ATSC 8VSB

in line with ATSC Doc. A/53 (8VSB)

ATSC-M/H

in line with ATSC Doc. A/153

(Mobile DTV)

Modulation

mode

8VSB

bandwidth

6 MHz

symbol rate

10.762 Msps

range

±5 %, settable

pilot

1.25 (can be switched off)

range

settable (from 0 to 5 in steps of 0.001)

pulse filtering

root raised cosine rolloff, α = 0.115

MER

> 42 dB

modulation frequency response

< ±0.25 dB

shoulder attenuation

> 45 dB

Coding

input data rate

19.392658 Mbit/s

Special functions

randomizer, interleaver

can be switched off

Test signals

TS test packet (see “Internal test signals”)

PRBS before convolutional encoder

PRBS after convolutional encoder

PRBS before mapper

DTMB (R&S

BTC-K512 option)

DTMB (TDS-OFDM)

in line with GB20600-2006

Modulation

mode

COFDM/single carrier

bandwidth

6 MHz, 7 MHz, 8 MHz

modulation frequency response

< 0.2 dB

shoulder attenuation

> 50 dB

Coding

constellation

4QAM, 4QAM-NR, 16QAM, 32QAM,

64QAM

code rate

0.4, 0.6, 0.8

guard interval

PN sequences

420, 595, 945

PN sequences 420, 945

variable/constant

PN sequence 595

constant

time interleaver

off, 240 symbols, 720 symbols

FFT mode

4k COFDM/single carrier

dual pilot tone

can be switched on (single carrier)

Special functions

GI power boost

can be switched off

SI power normalization

can be switched on

Single-frequency network

network mode

MFN, SFN

control

SIP, manual

Test signals

TS test packet (see “Internal test signals”)

Can be inserted into an existing user-selectable subchannel of an incoming, valid ETI data stream.

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BTC Z22 Manual de usuario Pagina 25

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