Measurement-computing WBK Options Bedienungsanleitung Seite 23
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Programmable Low-Pass Filter Cards
988396
WBK12A and WBK13A, pg. 5
Predicting Amplitude Loss
The following equations can be used to predict the amplitude loss when passing a signal through either the
anti-alias or clock suppression filter.
Definition of equation terms:
Fin is the signal to be measured.
Falias is the cutoff frequency of the anti-alias filter.
Fclock is the cutoff frequency of the clock suppression filter.
Err 20 log
1
1
Fin
Falias
.
Err 20 log
1
1
Fin
Fclock
.
Total error, in dB, due to both filters is :
Etot 20 log
1
1
Fin
Falias
1
1
Fin
Fclock
..
As an example, with the switched capacitor filter set to 10,000 Hz. and the input frequency set to 6000 Hz.
Fin = 6000
Falias = 33554
Fclock = 14848
Total amplitude loss = sum of both errors = -2.188 dB.
E1 20 log
1
1
6000
33554
.
E1 0.71446
=
E2 20 log
1
1
6000
14848
.
E2 1.47396
=
E1 E2 2.18843
=
Etot 20 log
1
1
6000
33554
1
1
6000
14848
..
Etot 2.18843
=
Fx 1 2
,
8000
..
Fp 33554
Fc 14848
EFx( ) 20 log
1
1
Fx
Fp
1
1
Fx
Fc
..
- WBK Options 1
- Table of Contents 4
- An Introduction to WBKs 5
- What are WBKs? 5
- WaveBook System Components 8
- Fastener Panels 9
- (p/n HA-111) 9
- WBK Option Cards and Modules 10
- Analog Expansion Module 11
- Analog Specifications 13
- PGA Filter 14
- WBK11A Functions 14
- WBK12A, WBK13A Functions 14
- Triggering 14
- External Clock 14
- Sequencer 15
- Period Counter 15
- General Specifications 15
- WBK11A 16
- WBK11A – Specifications 17
- (Note 3) 18
- (Note 2) 18
- WBK12A and WBK13A 19
- Predicting Amplitude Loss 23
- Dynamic Signal Input Module 25
- Current Source 26
- High-Pass Filters (HPF) 26
- Simultaneous Sample and Hold 27
- Excitation Source 27
- Calibration 27
- WBK14, pg. 7 31
- WBK14 – Specifications 33
- 5B Module Insertion/Removal 36
- Typical Signal Connections 36
- WBK15, pg. 4 37
- Simplifying gives you: 39
- This means: 39
- WBK15 – Specifications 40
- WBK16 Strain-Gage Module 41
- CAUTION 43
- 949794 WBK16, pg. 5 45
- Excitation Connection 46
- 949794 WBK16, pg. 7 47
- Configuration Diagrams 48
- B,D, or F Shunt 49
- External 50
- Switches 51
- 949794 WBK16, pg. 13 53
- 949794 WBK16, pg. 15 55
- 949794 WBK16, pg. 17 57
- 949794 WBK16, pg. 19 59
- Sensor Calibration 62
- 949794 WBK16, pg. 23 63
- 949794 WBK16, pg. 25 65
- Sensor Configuration Window 66
- Column Description 67
- Column Display Description 68
- (Units) 69
- Excitation = 10V 70
- Max Load = 600 70
- Quiescent Load = 0 70
- Point 1 Units = 50 70
- Point 2 Units = 500 70
- 949794 WBK16, pg. 31 71
- 949794 WBK16, pg. 33 73
- 949794 WBK16, pg. 35 75
- WBK16 – User Tips 76
- 949794 WBK16, pg. 37 77
- WBK16 – Specifications 78
- WBK17 79
- Functional Concepts 82
- Analog Filtering 83
- Comparator 84
- Debounce Module 85
- WBK17, pg. 8 86
- WBK17, pg. 9 87
- WBK17, pg. 10 88
- WBK17, pg. 11 89
- Timing Mode 90
- Encoder Mode 90
- Counter/Totalize Mode 90
- WBK17, pg. 13 91
- Period Mode 92
- WBK17, pg. 15 93
- WBK17, pg. 16 94
- Pulsewidth Mode 95
- WBK17, pg. 18 96
- WBK17, pg. 21 99
- WBK17, pg. 22 100
- WBK17, Counter/Encoder Module 100
- Wiring for 1 or 2 Encoders 101
- WBK17, pg. 24 102
- Application Example #1 103
- WBK17, pg. 26 104
- Wiring for 4 Encoders 106
- Digital Inputs 107
- Digital Outputs 108
- WBK17, pg. 31 109
- WBK17, pg. 32 110
- WBK17, pg. 33 111
- WBK17, pg. 34 112
- Software Support 113
- Fuse Replacement 114
- WBK17 - Specifications 115
- Description 116
- WBK18, pg. 3 118
- (1 LED per Channel) 119
- Hardware Setup 120
- Software Setup 122
- WBK18, pg. 9 124
- WBK18, pg. 11 126
- WBK18, pg. 15 130
- WBK18, pg. 17 132
- Using Accelerometers 133
- WBK18, pg. 19 134
- Fuse Replacement – for WBK18 136
- PCMCIA/EPP Interface Card 141
- WARNINGWARNING 142
- WBK21 - Specifications 143
- Features 144
- Specifications 145
- Operational Aspects 148
- STEP 1 – 150
- STEP 2 – 150
- STEP 4 – 152
- STEP 5 153
- WBK25, pg. 9 154
- STEP 6 155
- WBK25, pg. 11 156
- STEP 7 157
- WBK25, pg. 13 158
- WBK25, pg. 15 160
- 928396 163
- WaveBook Memory Options 164
- WBK30, pg. 2 165
- WBK30, Memory Options 165
- WaveBook/516E 165
- WBK30 – Specifications 167
- WBK30, pg. 5 168
- WBK30, pg. 6 169
- Overview 170
- Item Description 173
- 176
- WBK40 & WBK41, pg. 7 176
- WBK40 & WBK41, pg. 9 178
- WBK40 & WBK41, pg. 11 180
- See Note 182
- Address “0” 182
- WBK40 & WBK41, pg. 13 182
- WBK40 & WBK41, pg. 17 186
- CE Compliance 190
- WBK40 & WBK41, pg. 25 194
- Input Sequencer 198
- : ±0.0045V max 200
- Frequency/Pulse Counters 201
- Frequency/Pulse Generators 201
- Ordering Information 202
- STEP 3 – 206
- 1066-0901, rev 1.0 207
- WBK40 & WBK41 IG-5 207
- Installation Guide 208
- WBK61 and WBK62 209
- High-Voltage Adapters 209
- WBK61 and WBK62, pg. 3 211
- Gain Error: 213
- 0.1% FS (unipolar) 213
- Glossary 214
- Data Acquisition 215
- Glossary G-3 216
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