SVP UDR-104, Руководство пользователя

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UDR-108 Diversity Receiver
MANUAL V0
131
• Input:
Select the type of the signal that is received. The available options are
DVB-T2, DVB-T, ASI, IP and ISDB-T. (eligible parameter)
• Status:
If this field shows the locked word then, it means that the signal is
present in the input of the device. If this field displays the word unlocked
then, it means that there is no signal in the input of the device. (reading
parameter)
•
Demodulator

RX Frequency:
In this field, the frequency of the received signal must be set. (editable
parameter)

Bitrate:
In this field the bitrate of the received signal is displayed. (reading
parameter)

Bandwidth:
In this option, the bandwidth of the received signal must be specified.
The available options are 6, 7 and 8MHz for ISDB-T. (eligible
parameter)

LO Frequency:
In this field, the frequency of the local oscillator connected to the I.F.
input must be specified. (editable parameter)

Diversity:
The available options are:
-
Mobile (MRC[1] technique)
- Fixed (Switching technique)
[1] MRC limitations to take into account:
-
MRC doesn’t work when LO is superior to the RF
- MRC doesn’t work if the IF is lower than 150 MHz
In both cases, the unit changes automatically to “Fixed” mode and a
flicker “f” appears on DVB-T main screen of Receiver unit.
ISDB-T modulation always works in fixed mode.

Constellation:
In this field the type of modulation of the received signal is displayed.
The available options are QPSK, 16QAM and 64QAM for ISDB-T.
(reading parameter)

FEC:
In this field the value of the FEC of the received signal is displayed.
The available options are 1/2, 2/3, 3/4, 5/6, 7/8 for ISDB-T. (reading
parameter)