VTI Instruments EMX-4016B, Руководство пользователя

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VTI Instruments Corp.
APPENDIX B 88
For lower decimated spans, at each stage of 1/2 decimation filter adds 31.5 samples group delay,
and 1/5 decimation filter adds 73 samples delay. The total group delay is shown in the table below.
Model EMX-4350/4380 EMX-4250/4251
Clock Freq 409600 Hz 524288 Hz 625000 Hz 131072 Hz 204800 Hz
Top Span
6.83594E-05 5.34058E-05 0.0000448 0.000297546 0.00019043
1/5 0.00025 0.00019 0.00016 0.00085 0.00055
½- Stage1 0.000145 0.00063 0.000113 0.00049 0.000095 0.00041 0.00054 0.0020 0.000344 0.00132
Stage2 0.000299 0.00140 0.00023 0.0011 0.000196 0.00092 0.00102 0.0045 0.000652 0.00285
Stage3 0.000607 0.00294 0.000474 0.00230 0.000398 0.0019 0.00198 0.0093 0.00127 0.00593
Stage4 0.00122 0.00601 0.000955 0.0047 0.000800 0.0039 0.0039 0.019 0.0025 0.012
Stage5 0.00245 0.0122 0.00192 0.0095 0.00161 0.0080 0.0078 0.038 0.0050 0.0244
Stage6
0.00491 0.0245 0.00384 0.0191 0.00322 0.0160 0.0154 0.0765 0.0099 0.0490
Stage7 0.00984 0.0491 0.00768 0.0383 0.00645 0.0322 0.031 0.153 0.0197 0.0982
Stage8 0.0197 0.0983 0.0154 0.0768 0.0129 0.0644 0.0616 0.307 0.0394 0.197
Stage9 0.0394 0.197 0.0308 0.154 0.0258 0.1289 0.123 0.615 0.0788 0.394
Stage10
0.0787 0.394 0.0615 0.308 0.0516 0.2580 0.246 1.230 0.158 0.787
Stage11 0.157 0.787 0.123 0.615 0.103 0.5160 0.492 2.460 0.315 1.575
Stage12 0.315 1.575 0.246 1.230 0.206 1.0321 0.984 4.922 0.630 3.150
Stage13
0.630 3.15 0.492 2.461 0.413 2.0643 1.969 9.843 1.260 6.300
Stage14 1.26 6.30 0.984 4.922 0.826 4.1287 3.938 19.687 2.520 12.60
Stage15 2.52 12.6 1.969 9.844 1.652 8.2574 7.875 39.375 5.040 25.20
Stage16 5.04 25.2 3.937 19.69 3.303 16.515 15.75 78.75 10.08 50.40
Table A-2: Group Delay (Seconds)