Advanced SDR Demonstrator DE9941A
2020 CML Microsystems Plc 3 UM9941A/1
Table Page
Table 1 Connector List...........................................................................................................................................................................9
Table 2 Test Points.................................................................................................................................................................................9
Table 3 DE9941A Channel Table..........................................................................................................................................................14
Table 4 Sensitivitylevels (mean power) for different gross (on-air) bit rates in a 25kHz channel.....................................................21
Table 5 4-QAM Rx Adjacent Channel Rejection with a FM Interferer at +/-25kHz Offset..................................................................22
Table 6 16-QAM Rx Adjacent Channel Rejection with FM Interferer at +/-25kHz offset...................................................................23
Table 7 64-QAM Rx Adjacent Channel Rejection with a FM Interferer a t +/-25kHz offset.................................................................23
Table 8 Co-channel Performance for different gross (on-air) bit rates...............................................................................................23
Table 9 Rx Intermodulation Performance for 4-QAM in Enhanced IP3 mode....................................................................................24
Table 10 4-QAM Rx Spurious Response and Blocking Performance ...................................................................................................25
Table 11 Tx Performance at 366.5MHz with different QAM and Channel Filter Types......................................................................25
Table 12 Summaryof 16-QAM Tx Output Power and ACP Performance ...........................................................................................26
Table 13 Receiver - Possible Errors......................................................................................................................................................32
Table 14 Transmitter - Possible Errors.................................................................................................................................................32
Figure Page
Figure 1 Block Diagram..........................................................................................................................................................................4
Figure 2 Typical Evaluation Connections for DE9941A..........................................................................................................................7
Figure 3 PCB Layout: top......................................................................................................................................................................10
Figure 4 PCB Layout: bottom...............................................................................................................................................................10
Figure 5 FunctionImage Load...............................................................................................................................................................13
Figure 6 Setup Script Channel No Selection .........................................................................................................................................15
Figure 7 Setup Script User Prompt to Ensure Rx Input is OFF to Allow RxDC Calibration...................................................................15
Figure 8 Setup Script User Prompt to Check Rx Performance .............................................................................................................16
Figure 9 Setup Scri pt User Prompt to Check Tx Null Condition ...........................................................................................................16
Figure 10 Setup Script Log Screen after Script has completed ............................................................................................................17
Figure 11 RxScript User Prompt to Enable AGC...................................................................................................................................18
Figure 12 Tx Script User Prompt to Select Modulation Type to Send (4, 16,32 or 64) .......................................................................18
Figure 13 Rx Script Log Screen Following Successful Reception ..........................................................................................................19
Figure 14 Tx Scri pt Log Screen Following Successful Transmission......................................................................................................19
Figure 15 Typical ber_results.txt file Output From the Rx...................................................................................................................20
Figure 16 Rx Sensitivity with 4-QAM, 16-QAMand 64-QAM at 18 ksymbols/s..................................................................................21
Figure 17 Rx Sensitivityat Different Frequencies with 4-QAM, 18 ksymbols/s..................................................................................22
Figure 18 4-QAM, 16-QAM and 64-QAM Co-Channel Performance...................................................................................................24
Figure 19 16-QAM, 18ks/s, ACP Performance at 350.05MHz............................................................................................................26
Figure 20 16-QAM, 18ks/s, ACP Performance at 366.5MHz ..............................................................................................................26
Figure 21 16-QAM, 18ks/s, ACP Performance at 399.55MHz............................................................................................................27
Figure 22 16-QAM, 9.6ks/s, ACP Performance at 366.5MHz..............................................................................................................27
Figure 23 16-QAM, 40ks/s, ACP Performance at 366.5MHz ...............................................................................................................27
Figure 24 16-QAM, 18ks/s, Constellation and EVMat 366.5MHz......................................................................................................28
Figure 25 16-QAM, 9.6ks/s, Constellation and EVMat 366.5MHz......................................................................................................28
Figure 26 16-QAM, 40ks/s, Constellation and EVMat 366.5MHz......................................................................................................28
Figure 27 Wideband Plots of Tx at 350.05MHz ...................................................................................................................................29
Figure 28 Wideband Plots of Tx at 366.5MHz .....................................................................................................................................29
Figure 29 Wideband Plots of Tx at 399.55MHz ...................................................................................................................................29
Figure 30 Ramp-up and Ramp-down Profile (QAM)............................................................................................................................30
Figure 31 Tx Spectral Puri tyin Transient Mode, 200kHz Span (QAM)................................................................................................30
Figure 32 TxSpectral Purityin Transient Mode, 1MHz Span (QAM)...................................................................................................30
Figure 33 TxSpectral Purityin Transient Mode, 10MHz Span (QAM) .................................................................................................31
It is always recommendedthat you checkfor the latest product datasheet version from the Products page of the CML website:
[www.cmlmicro.com].
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