BTC Z22 Bedienungsanleitung PDF herunterladen (Seite 29)

Version 02.00, November 2014

Rohde & Schwarz R&S

®

BTC Broadcast Test Center 29

Satellite standards

DVB-S/DVB-DSNG/DVB-S2 (R&S

®

BTC-K508 option)

DVB-S/DVB-DSNG (R&S

®

BTC-K508 option)

DVB-S/DVB-DSNG

in line with EN 300421/EN 301210

Modulation

mode

QPSK, 8PSK, 16QAM

symbol rate

0.1 Msps to 66 Msps, settable

pulse filtering

root raised cosine rolloff

(α = 0.20, 0.25, 0.35)

MER

> 40 dB (QPSK/8PSK/16QAM, 20 Msps)

modulation frequency response

±0.25 dB

shoulder attenuation

> 50 dB

Coding

constellation

code rate

QPSK

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

8PSK

2/3, 5/6, 8/9

16QAM

3/4, 7/8

Special functions

energy dispersal, Reed-Solomon encoder

(204, 188, t = 8), convolutional interleaver

can be switched off

Test signals

TS test packet (see “Internal test signals”)

PRBS before convolutional encoder

DVB-S2 (R&S

®

BTC-K508 option)

DVB-S2

in line with

EN 302307 part I including Annex M

supported services

broadcast services, professional services,

interactive services, DSNG

Modulation

modulation coding

S2-MODCOD

(1 to 28) QPSK, 8PSK, 16APSK, 32 APSK

symbol rate (all constellations)

0.1 Msps to 80 Msps

pulse filtering

root raised cosine rolloff

(α = 0.05, 0.10, 0.15, 0.20, 0.25, 0.35)

MER

> 40 dB (QPSK/8PSK, 20 Msps)

modulation frequency response

±0.25 dB

shoulder attenuation

> 50 dB

Coding

constellation

code rate

S2 – QPSK (normal)

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

8/9, 9/10

S2 – QPSK (short)

1/4, 1/3, 2/5, 1/2, 3/5, 2/3, 3/4, 4/5, 5/6, 8/9

S2 – 8PSK (normal)

3/5, 2/3, 3/4, 5/6, 8/9, 9/10

S2 – 8PSK (short)

3/5, 2/3, 3/4, 5/6, 8/9

S2 – 16APSK (normal)

2/3, 3/4, 4/5, 5/6, 8/9, 9/10

S2 – 16APSK (short)

2/3, 3/4, 4/5, 5/6, 8/9

S2 – 32 APSK (normal)

3/4, 4/5, 5/6, 8/9, 9/10

S2 – 32 APSK (short)

3/4, 4/5, 5/6, 8/9

S2 FEC frame

settable

normal, 64800 bit

short, 16200 bit

pilot insertion

on/off

1 2 ... 24 25 26 27 28 29 30 31 32 33 34 ... 63 64

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