Atec Rohde-Schwarz-SFQ Series - Manual (Page 15)

TV Test Transmitter R&S ® SFQ 15
DVB-T Coder option R&S SFQ-B10
Characteristics meet EN300744
Input TS PARALLEL; with R&S SFQ-B6: ASI, SPI
Mode
DATA MPEG input signal synchronized to in-
put data rate
NULL TS PACKET null transport stream packets as de-
fined by Measurement Guidelines for
DVB Systems
NULL PRBS PACKET null transport stream packets with PRBS
(PRBS: 2
23 −1/2 15 −1 to ITU-T Rec. O.151)
PRBS before convolutional encoder 2 23 −1/2 15 −1 to ITU-T Rec. O.151
PRBS after convolutional encoder 2 23 −1/2 15 −1 to ITU-T Rec. O.151
PRBS before mapper 2 23 −1/2 15 −1 to ITU-T Rec. O.151
Special functions scrambler, sync byte inversion,
Reed-Solomon, convolutional interleaver,
bit interleaver, symbol interleaver, can
be switched off
Bandwidth 6 MHz, 7 MHz, 8 MHz
(selectable for variable bandwidth from:
5.164 MHz to 7.962 MHz)
Constellation 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
, OFF
FFT mode 2K and 8K COFDM
Carrier modification switching off carriers, carrier groups,
modulation for carrier groups
Hierarchical coding can be retrofitted (see opt. R&S SFQ-B16)
DVB-T/Hierarchical Coding option R&S SFQ-B16
only in conjunction with R&S SFQ-B10
Characteristics
meet EN300744
AUX input TS PARALLEL or SPI (parallel, with stuff-
ing); selectable
Assignment to high-priority or low-priority path
Mode for high-priority and low-priority path
DATA MPEG input signal
NULL TS PACKET null transport stream packets as de-
fined by Measurement Guidelines for
DVB Systems
NULL PRBS PACKET null transport stream packets (PRBS:
2
23 −1/2 15 −1 to ITU-T Rec. O.151)
PRBS before convolutional encoder 2 23 −1/2 15 −1 to ITU-T Rec. O.151
PRBS after convolutional encoder 2 23 −1/2 15 −1 to ITU-T Rec. O.151
PRBS before mapper 2 23 −1/2 15 −1 to ITU-T Rec. O.151
Special functions scrambler, sync byte inversion, Reed-
Solomon, convolutional interleaver, bit
interleaver, symbol interleaver; can be
switched off
ATSC/8VSB Coder option R&S SFQ-B12 (-B8)
Characteristics meet ATSC Doc. A/53 (8VSB)
Frequency setting pilot frequency, center frequency, chan-
nel tables
Input data rate 19.392658 Mbit/s
Range ±10% (larger range with option
R&S SFQ-B6)
Input LVDS, with R&S SFQ-B6: ASI, SPI,
SMPTE310
Mode
DATA MPEG input signal with synchronization
to input data rate
NULL TS PACKET null transport stream packets as de-
fined by Measurement Guidelines for
DVB Systems
NULL PRBS PACKET null transport stream packets (PRBS:
2
23 −1/2 15 −1 to ITU-T Rec. O.151)
SYNC PRBS sync byte with 187 bytes PRBS payload
PRBS before trellis 2 23 −1/2 15 −1 to ITU-T Rec. O.151
PRBS after trellis 2 23 −1/2 15 −1 to ITU-T Rec. O.151
Symbol rate 10.762 Msps
Range ±10%
Bandwidth 6 MHz
Range ±10%
VSB level 8VSB
Pilot 1.25, can be switched off
Range 0 to 5 in steps of 0.125
Pulse filtering (root cosine) 0.115 roll-off
Special functions randomizer, interleaver; can be
switched off
Error simulation selectable: carrier leakage,
I/Q imbalance, I/Q phase error
ISDB-T Coder option R&S SFQ-B26
Characteristics meet ARIB STD-B31, V1.0
Inputs TS PARALLEL + AUX and SPI
with R&S SFQ-B6: ASI
Mode
DATA PRBS: 2 23 −1/2 15 −1 to ITU-T Rec. O.151
NULL TS PACKET PRBS: 2 23 −1/2 15 −1 to ITU-T Rec. O.151
PRBS TS PACKET PRBS: 2 23 −1/2 15 −1 to ITU-T Rec. O.151
PRBS before convolutional encoder PRBS: 2 23 −1/2 15 −1 to ITU-T Rec. O.151
PRBS after convolutional encoder PRBS: 2 23 −1/2 15 −1 to ITU-T Rec. O.151
Special functions scrambler, Reed-Solomon, byte inter-
leaver, frequency interleaver, Alert
Broadcasting Flag can be switched off
Bandwidth 5.57 MHz
±1%
Carriers data, SP, CP, TMCC and AC carriers as
well as the modulation of these carriers
can be switched off
Segments all carriers of one segment can be
switched off
ISDB-T mode mode 1 (2K), mode 2 (4K), mode 3 (8K)
Number of layers max. 3 (A, B, C)
Number of segments 13
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
, OFF
Time interleaving 0, 1, 2, 4, 8, 16 (settable depth depend-
ing on ISDB-T mode)
AC information PRBS, all “1“
Spectrum mask according to ISDB-T specifications
DVB-C Coder option R&S SFQ-B21 (-B22)
Characteristics meet EN 300 429
Type of modulation 16QAM, 32QAM, 64QAM, 128QAM,
256QAM
Symbol rates 0.1 Msps to 8 Msps (selectable)
Pulse filtering root cosine roll-off,
alpha=0.15
variable roll-off (0.1 to 0.2)
Energy dispersal can be switched off
Reed-Solomon coder (204,188, t=8) can be switched off
Convolutional interleaver can be switched off
Mode
DATA MPEG2 input signal (without input sig-
nal automatic switchover to PRBS with
TS PARALLEL, stuffing with ASI, SPI)
NULL TS PACKET null packets (PID=1FFF, payload=0)
NULL PRBS PACKET null packets (PID=1FFF, payload=
PRBS, 2 15 -1/2 23 -1 to ITU-T Rec. O.151)
PRBS before mapper 2 15 -1/2 23 -1 to ITU-T Rec. O.151
ITU-T J.83-B Coder option R&S SFQ-B13 (-B9)
Only in conjunction with option R&S SFQ-B6
Characteristics
meets ITU-T J.83-B
Input data rate (nominal, range corre-
sponding to symbol rate) 26.970 Mbit/s for 64QAM,
38.8107 Mbit/s for 256QAM
Input LVDS, ASI, SPI, SMPTE310
Mode
DATA input signal synchronized to input data
rate
NULL TS PACKET null transport stream packets
NULL PRBS PACKET null transport stream packets with PRBS
(PRBS: 2
23 -1/2 15 -1 to ITU-T Rec. O.151)
SYNC PRBS sync byte with 187 byte PRBS payload
PRBS before trellis coding PRBS: 2 23 -1/2 15 -1 to ITU-T Rec. O.151
PRBS after trellis coding PRBS: 2 23 -1/2 15 -1 to ITU-T Rec. O.151