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11.. . A
PPENDIX
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ILTERING
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PTIONS
U
SING THE
OMP-MODL
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A
PPENDIX
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ILTERING
O
PTIONS
Many of the Interface Modules can be configured with filtering options for reducing
the noise picked up on sensor or input signal wiring. A short discussion of two of the
filtering methods that are available to the User through icon configuration dialog
boxes follow:
ADC Input Filtering
In the OMP-MODL, a first order noise filter can be enabled within many of the
analog input icon configuration dialog boxes. First order filtering reduces High
frequency noise that may be picked up by sensor wiring.
However
, filtering slows
down the rate at which a channel can be sampled as it adds additional settling time
to the total time required for a reading.
Additional
settling time required for each of the three levels is specified in the table
below.
If speed of execution of the Program Net is not of concern, utilize the High level of
filtering for best noise rejection.
Filter Level
Additional Settling Time
None
0
High
15 mS
50Hz / 60Hz Sofware Filtering
Noise radiated from utility power lines (including house and building wiring,
appliances and extension cords) and picked up by sensors and associated wiring is
one of the most common sources of data acquisition error.
The OMP-MODL has additional software based filtering capability designed to
remove 50 Hz or 60Hz power line sourced noise from incoming signals. This
filtering capability is especially helpful in applications with sensors and/or wiring
which is in close proximity to utility wiring.
Содержание OMP-MODL
Страница 1: ......
Страница 9: ...1 INTRODUCTION USING THE MODULOGGER 1 7 13 ...
Страница 23: ...2 OMP MODL System Base Using the OMP MODL 2 14 NOTES ...
Страница 24: ...2 ModuLogger System Base Using the ModuLogger 2 1 ...
Страница 30: ...3 INTERFACE MODULES USING THE OMP MODL 3 6 NOTES ...
Страница 70: ...3 INTERFACE MODULES USING THE OMP MODL 3 46 NOTES ...
Страница 76: ...3 INTERFACE MODULES USING THE OMP MODL 3 52 NOTES ...
Страница 82: ...3 INTERFACE MODULES USING THE OMP MODL 3 58 NOTES ...
Страница 83: ...3 INTERFACE MODULES USING THE MODULOGGER 3 1 ...
Страница 105: ...5 HYPERCOMM COMMUNICATIONS USING THE OMP MODL 5 18 NOTES ...
Страница 106: ...5 HYPERCOMM COMMUNICATIONS USING THE MODULOGGER 5 1 ...
Страница 117: ...6 PCMCIA CARD CONFIGURATION AND USE USING THE MODULOGGER 6 1 ...
Страница 134: ...7 HYPERNET ICON BASED PROGRAMMING USING THE OMP MODL 7 17 NOTES ...
Страница 141: ...8 P P C D U OMP MODL ...
Страница 149: ...9 HYPERPLOT GRAPHIC DATA DISPLAY USING THE OMP MODL 9 8 ...
Страница 161: ...10 HYPERTRACK REAL TIME DATA DISPLAY USING THE OMP MODL 10 12 NOTES ...
Страница 162: ...10 HYPERTRACK REAL TIME DATA DISPLAY USING THE OMP MODL 10 1 ...
Страница 163: ...11 APPENDICES USING THE OMP MODL 11 1 11 APPENDICES ...
Страница 164: ...11 APPENDICES USING THE OMP MODL 11 2 NOTES ...
Страница 270: ...11 APPENDIX A MASTER ICON FILE REFERENCE USING THE OMP MODL 11 108 ...
Страница 276: ...11 APPENDIX C HYPERWARE FILE LISTING USING THE OMP MODL 11 114 NOTES ...
Страница 278: ...11 APPENDIX C HYPERWARE FILE LISTING USING THE OMP MODL 11 116 NOTES ...
Страница 279: ......
Страница 282: ...11 APPENDIX E CHANGING THE OMP MODL EPROM USING THE OMP MODL 11 120 NOTES ...
Страница 288: ...11 APPENDIX G HYPERNET THEORY OF OPERATION USING THE OMP MODL 11 126 NOTES ...
Страница 290: ...11 APPENDIX I RS 232 CABLE PORT AND ADAPTER USING THE OMP MODL 11 128 NOTES ...
Страница 297: ...11 APPENDIX K MODEM CONFIGURATION USING THE OMP MODL 11 135 ...