Getting Started; Introduction; Configuration: Receiving A Dvb-S2X Stream; Test Set-Up - DekTec DTM-3237B User Manual

DTM-3237B – DVB-S2X Receiver with DVB-ASI Output
User Manual

2. Getting Started

2.1 Introduction

This section provides a walkthrough for getting started with the DTM-3237B. The description below
assumes that you have a DTM-3237B development kit available (see Appendix B). The DTM-3237B
is connected to a development PC with USB. The GUI control tool Dtm3237BUtil is used to apply
settings and observe status.

2.2 Configuration: Receiving a DVB-S2X Stream

This setup will receive a DVB-S2X stream and transmit the stream on the ASI interface.

2.2.1 Test Set-Up

For testing this configuration, a DVB-S2X signal should be connected to the DTM-3237B's RF input.
To observe the output of the DTM-3237B, an ASI receiver is helpful
This tutorial assumes that a DVB-S2X stream with the following or equivalent parameters is applied to
the DTM-3237B.
Modulation standard
Constellation
Frequency
Code rate
Symbol rate
RF power level

2.2.2 Configuring the DVB-S2X to ASI Conversion

Use Dtm3237BUtil to configure the DTM-3237B as shown in the table below. The receiver is updated
when a configuration parameter is updated using the pen icon next to each setting.
Change the following parameters:
Category
1 0x90
2 0x90
3 0x90
A refresh is required to see the receiver status and statistics.
The DTM-3237B will now receive a DVB-S2X stream and transmit this stream on the ASI port. The
status LED will be steady green to indicate successful transmission of the transport stream on the ASI
output. If no DVB-S2X stream is received, the status LED will flash green on and off.
If you do not have a suitable DVB-S(2) modulator and/or ASI receiver, this functionality can, for example, be realized with
1
a PC and a DekTec usb modules DTU-315 and DTU-245. Please consult your local DekTec representative for more
information.
DVB-S or DVB-S2
QPSK, 8PSK, 16-APSK or 32-APSK
1150 MHz
½
27.5 MSymbol/s
-30dBm
Setting Setting name
0x01 Receive mode
0x03 Frequency (Hertz)
0x09 LNB power enable
1 .
0 = Transport stream
1150000000 = 1150MHz
0 = Disabled
9
Value