RHUL Physics Department TWiki> PP/JAI Web>RFLab>BeamPosition>NewClicBpm>ClicFermiLabCompression (26 Aug 2015, JackTowler)
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Compression Measurements

  • The following measurements where taken on channel 1 of protoype box 1.
  • The attenuation of the cables is taken into account, -5.16 before the downconverter at 15 GHz and -0.18 afterwards at 75 MHz.

Summary

IF Gain Setting RF Gain Setting 1-dB Compression Point
0 20 7.65
0 30 -7.71
0 40 -24.42
0 50 -33.19
0 60 -36.72
10 20 7.4
10 30 -16.98
10 40 -33.47
10 50 -41.90
10 60 -45.43
19 20 -0.40
19 30 -25.83
19 40 -42.25
19 50 -50.97
19 60 -54.34

compression.png

0 IF Gain Setting

r20_i0.png r30_i0.png r40_i0.png r50_i0.png r60_i0.png

10 IF Gain Setting

r20_i10.png r30_i10.png r40_i10.png r50_i10.png r60_i10.png

19 IF Gain Setting

r20_i19.png r30_i19.png r40_i19.png r50_i19.png r60_i19.png

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Topic revision: r2 - 26 Aug 2015 - JackTowler

 
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