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Vislink Quantum User Manual

Vislink Quantum
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Quantum Receiver User Manual
Receiver Installation & Setup
Issue No: A Page: 72
Ref: ?-Insert_Document_Part_No._Here-? Copyright © 2021 Vislink is a Vislink Technologies Inc. companies
Bitrates (Mbit/s) for a DVB-T system in 8 MHz channels
Modulation
Code
Rate
Guard Interval
1/4
1/8
1/16
1/32
QPSK
1/2
4.976
5.529
5.855
6.032
2/3
6.635
7.373
7.806
8.043
3/4
7.465
8.294
8.782
9.048
5/6
8.294
9.216
9.758
10.053
7/8
8.709
9.676
10.246
10.556
16-QAM
1/2
9.953
11.059
11.709
12.064
2/3
13.271
14.745
15.612
16.086
3/4
14.929
16.588
17.564
18.096
5/6
16.588
18.431
19.516
20.107
7/8
17.418
19.353
20.491
21.112
QPSK
1/2
14.929
16.588
17.564
18.096
2/3
19.906
22.118
23.419
24.128
3/4
22.394
24.882
26.346
27.144
5/6
24.882
27.647
29.273
30.16
7/8
26.126
29.029
30.737
31.668
Table 7-1 DVB-T Bitrates
7.7.2. LMS-T Operation
The following procedure defines the changes and sequence required when
changing to LMS-T operation. Configure these settings using the
Settings>RF>Modulation menu option, see
Section 6.3.1.1 Modulation
:
1. Set Frequency Mode to Direct or Channel Plan.
2. Set the Modulation Type to LMS-T (Single or Dual).
3. Set the Bandwidth to 3 - 12MHz (Single) or 6 24MHz (Dual).
4. Set Guard Interval to Auto.
5. Set Polarity to Auto.
6. Set Frequency as required.
The table below defines the corresponding gross bit rates for LMS-T operation
at the two most common bandwidths (Single or Dual pedestal).
Bitrates (Mbit/s) for a LMS-T system in 8 MHz channels
Channels
10MHz
20MHz
Modulation
Code
Rate
Guard Interval
1/8
1/16
1/8
1/16
QPSK
2/3
9.2
9.7
18.4
19.5
16-QAM
2/3
18.4
19.5
36.8
39
Table 7-2 LMS-T Bitrates
7.8. Configuring Diversity
The Decoder can be disabled, so that no error is displayed when only operating
as a demodulator. It can be operated in HD or SD mode. It can also be switched
to decode an ASI stream either from the demodulator output, the Packet
Diversity output or an external source from the rear panel ASI IN connector.
Configure these settings using the Settings>Global>ASI menu option, see
Section 6.3.7.1 ASI:

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Vislink Quantum Specifications

General IconGeneral
BrandVislink
ModelQuantum
CategoryReceiver
LanguageEnglish

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