DekTec DTM-3237 DVB-S2 Receiver - Manual (Page 8)

DTM-3237 – OEM DVB-S2 Receiver with DVB-ASI Output
User Manual
8
2. Getting Started
2.1 Introduction
This section provides a walkthrough for getting started with the DTM-3237. The description below
assumes that you have a DTM-3237 development kit available (see Appendix B). The DTM-3237 is
connected to a development PC with USB. The GUI control tool Dtm3237Util is used to apply settings
and observe status.
2.2 Configuration: Receiving a DVB-S(2) stream
This setup will receive a DVB-S(2) stream and transmit the stream on the ASI interface.
2.2.1 Test set-up
For testing this configuration, a DVB-S(2) signal should be connected to the DTM-3237’s RF input. To
observe the output of the DTM-3237, an ASI receiver is helpful 1 .
This tutorial assumes that a DVB-S(2) stream with the following or equivalent parameters is applied to
the DTM-3237.
Modulation standard DVB-S or DVB-S2
Constellation QPSK, 8PSK, 16-APSK or 32-APSK
Frequency 1150 MHz
Code rate ½
Symbol rate 27.5 MSymbol/s
RF power level -30dBm
2.2.2 Configuring the DVB-S(2) to ASI conversion
Use Dtm3237Util to configure the DTM-3237 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 Setting Setting name Value
1 0x90 0x01 Receive mode 0 = Transport stream
2 0x90 0x03 Frequency (Hertz) 1150000000 = 1150MHz
3 0x90 0x09 LNB power enable 0 = Disabled
A refresh is required to see the receiver status and statistics.
The DTM-3237 will now receive a DVB-S(2) 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-S(2) stream is received, the status LED will flash green on and off.
A screenshot of the Dtm3237Util after configuration is added on the next page.
1 If you do not have a suitable DVB-S(2) modulator and/or ASI receiver, this functionality can, for example, be realized with
a PC and a DekTec DTA-2107 and/or DTA-2144 I/O card in it. Please consult your local DekTec representative for more
information.