Specifications

Product Brochure
l
MX3700xxA 17
Digital Broadcast Waveform Patterns
Standard
■
Digital Broadcast Waveform Patterns
The BS/CS/CATV/ISDB-T waveform patterns listed in the table below are stored on the MG3700A internal hard disk and signals for testing
devices are output by selecting one of these waveform patterns.
There is also a pattern for evaluating ISDB-T video and audio as well as for simple BER measurements.
Waveform Patterns Outline Parameter
BS_1ch
Physical layer waveform pattern of digital BS broadcast
For device evaluation
1channel
PN23x
∗
1
Modulation only
Roll-off factor: 0.35
Nyquist Bandwidth: 28.86 MHz
Modulation: QPSK
CS_1ch
Physical layer waveform pattern of digital CS broadcast
For device evaluation
Roll-off factor: 0.35
Nyquist Bandwidth: 21.096 MHz
Modulation: QPSK
CATV_AnnexC_1ch
Physical layer waveform pattern for CATV (ITU-T J83 Annex C)
For device evaluation
Roll-off factor: 0.13
Nyquist Bandwidth: 5.274 MHz
Modulation: 64QAM
ISDBT_1layer_1ch
Physical layer waveform pattern for ISDB-T
For device evaluation
1 channel
PN23x
∗
1
Pilot Signal
With TMCC
Mode: 3, GI: 1/8
A-Layer: 13seg, 64QAM
ISDBT_2layer_1ch
Mode: 3, GI: 1/8
A-Layer: 1seg, QPSK
B-Layer: 12seg, 64QAM
ISDBT_2layer_Movie
Waveform pattern for ISDB-T partial reception
For evaluating video and audio data of terminals
40-frame waveform length
1 channel
For video and audio
Mode: 3, GI: 1/8
A-Layer: 1seg, QPSK, CR=2/3, TI=2
B-Layer: 12seg, 64QAM, CR=7/8, TI=2
ISDBT_2layer_Movie2
Mode: 3, GI: 1/8
A-Layer: 1seg, QPSK, CR=2/3, TI=4
B-Layer: 12seg, 64QAM, CR=3/4, TI=2
ISDBT_2layer_Coded
Waveform pattern for ISDB-T partial reception
For simple BER measurement.
4-frame waveform length
1 channel
For simple BER
Mode: 3, GI: 1/8
A-Layer: 1seg, QPSK, CR=2/3, TI=2
B-Layer: 12seg, 64QAM, CR=7/8, TI=2
ISDBT_QPSK_1_2
Mode: 3, GI: 1/8
A-Layer: 1seg, QPSK, CR=1/2, TI=0
B-Layer: 12seg, 64QAM, CR=7/8, TI=1
ISDBT_QPSK_2_3
Mode: 3, GI: 1/8
A-Layer: 1seg, QPSK, CR=2/3, TI=0
B-Layer: 12seg, 64QAM, CR=7/8, TI=1
ISDBT_16QAM_1_2
Mode: 3, GI: 1/8
A-Layer: 1seg, 16QAM, CR=1/2, TI=0
B-Layer: 12seg, 64QAM, CR=7/8, TI=1
ISDBT_QPSK_2_3_TI4
Mode: 3, GI: 1/8
A-Layer: 1seg, QPSK, CR=2/3, TI=4
B-Layer: 12seg, 64QAM, CR=3/4, TI=2
ISDBTsb_Movie
Waveform pattern for ISDB-Tsb partial reception
∗
2
For evaluation video and audio data of terminals.
68-frame waveform length
1 channel
For video and audio
Mode: 3, GI: 1/8
A/B-Layer: QPSK, CR=1/2, TI=4
Seg#1 to #5: 8-segment concatenation
transmission in 1-segment format
Seg#6 to #8: 8-segment concatenation
transmission in 3-segment format
ISDBTsb_QPSK_1_2
Waveform pattern for ISDB-Tsb partial reception
∗
2
For simple BER measurement.
4-frame waveform length
1 channel
For simple BER
Mode: 3, GI: 1/8
A/B-Layer: QPSK, CR=1/2, TI=0
Seg#1 to #5: 8-segment concatenation
transmission in 1-segment format
Seg#6 to #8: 8-segment concatenation
transmission in 3-segment format
ISDBTsb_QPSK_2_3
Mode: 3, GI: 1/8
A/B-Layer: QPSK, CR=2/3, TI=0
Seg#1 to #5: 8-segment concatenation
transmission in 1-segment format
Seg#6 to #8: 8-segment concatenation
transmission in 3-segment format
ISDBTsb_16QAM_1_2
Mode: 3, GI: 1/8
A/B-Layer: 16QAM, CR=1/2, TI=0
Seg#1 to #5: 8-segment concatenation
transmission in 1-segment format
Seg#6 to #8: 8-segment concatenation
transmission in 3-segment format
∗1: The PN sequence is discontinuous at the waveform pattern connection.
This cannot be used to measure BER (PN23) although it can be used for simple BER measurement.
∗2: It is not guaranteed that any receiver can receive a waveform with this length.
ООО "Техэнком" Контрольно-измерительные приборы и оборудование www.tehencom.com