Link HD System Manual
Document # -HD System Man Iss 1.1 Issue 1.1 06/11/2007
Page 18 of 31
2.4.3 Receiver Setup
The main functions that require configuration at the receiver are :-
• Type of down converter and operating frequency
• Demodulation scheme in operation; DVB-T, LMS-T or ASI input
• Frame Lock
• Audio Output
2.4.3.1 Down Converter Type
The following sequence defines the changes and sequence required when selecting the required down converter and
receiver RF frequency :-
Step Menu Option Setting
1 Unit DConv Type L3030
2 Unit LNB Power On
3 OFDM Demod IPFreq As Required
The demodulator will then automatically detect code rate, guard interval etc.
These received demodulation settings can be confirmed by checking the OFDM Demod menu.
2.4.3.2 Demodulation Scheme
The L2132 receiver can operate in three main operating modes :-
ASI input; acts as an HD decoder with ASI input into rear panel BNC
DVB-T; demodulator and HD decoder
10MHz COFDM; (LMS-T) demodulator and HD decoder
Menu Option Setting
Unit Mode ASI,10MHz, 20MHz, DVB-T
2.4.3.3 Frame Lock
The L2132 receiver can lock the decoder output to an external frame lock input. This can either be SD Black & Burst or HD
Tri-Level input into the rear panel BNC connector.
* Note- Tri-level sync is not supported on the current revision of hardware.
Menu Option Setting
Decoder Framelock On or Off
Decoder Offset +/- 5000 pixel offset
2.4.3.4 Audio Output Format
The L2132 receiver can output either analogue or AES3 digital audio from the rear panel XLR5 connectors.
Menu Option Setting
Decoder A Audio O/P Analogue or Digital
Decoder B Audio O/P Analogue or Digital
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