Measurement-computing DBK Part 2 Manuale Utente Pagina 147
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Three examples of using the excitation source follow. They are Position Sensing, Resistance/Thermistor
Measurement, and Reading a Transducer.
Source Impedance and Settling Time
High speed multiplexing of signal sources with non-zero impedance will result in reading errors caused by
settling time. In the simplest form, a multiplexing system consists of a group of switches, with internal
resistance, and an output capacitance at the input of an amplifier feeding an A/D converter with a sample-
hold circuit on the input. During the short time a channel signal is connected to the A/D amplifier, the
signal must charge the output capacitance to the true value of the signal so that the sample-hold captures an
accurate value for the A/D converter to digitize. If the source has significant internal impedance the
voltage reading will be reduced.
DBK Option Cards and Modules 989494 DBK80 pg. 3
- *372414B-01* 1
- DBK Cards & Modules 3
- DBK Cards & Modules 5
- Discontinued DBKs 6
- 10-Slot Expansion Module 7
- Card Insertion 9
- DBK41 - Specifications 11
- System Connection 11
- Terminal Block Connection 15
- 967694 DBK42, pg. 5 17
- This means: m = 320 19
- DBK42 – Specifications 20
- Configuration section 22
- Hardware Connection 23
- Hardware Configuration 24
- Bridge Applications 26
- MAX[EXC] 27
- Input Configuration Headers 29
- Shunt-Calibration Resistors 29
- Hardware Adjustment 33
- Software-Controlled Setup 34
- Selecting DBK43A 42
- Calibration Methods 46
- Determine Channel Parameters 47
- Initialize LogView 47
- know [as in the 50
- See Note No 52
- Adjust the Offset 53
- 2-Point Calibration 56
- Repeating the Process 57
- Shunt Calibration 58
- )( trimpotbysetasGainInput 62
- DriftOffsetOutput 62
- DriftOffsetInput + 62
- P1 Connection 66
- 877095 DBK44, pg. 7 69
- DBK44 – Specifications 70
- 987696 DBK45, pg. 3 73
- DBK45 – Specifications 76
- 4-Channel Analog Output Card 77
- DBK46 – Specifications 80
- Description 81
- Safety Concerns 82
- Installing 8B Modules 84
- 967792 DKB48, pg. 11 91
- This means: m = 320 95
- Therefore: b = - 160 95
- Specifications – DBK48 96
- 8B Module Ranges 97
- 967792 DKB48, pg. 19 99
- Overview 101
- Hardware Setup 102
- DAC 1 - INT 103
- Software Setup 104
- Single-Ended Mode 107
- Module Connection 107
- Module Configuration 107
- 989594 DBK55, pg. 1 111
- Input Signal Conditioning 113
- WARNING 113
- CAUTION 114
- Edge Selection 114
- Debouncing 114
- Frequency Measurement 115
- 988793 DBK55, pg. 7 117
- CE Compliance 120
- Specifications - DBK55 122
- 3 – Remove the card drawer 125
- 8 – Configure the DBK cards 127
- 9 – Install the DBK cards 127
- DBK60 - Specifications 128
- DBK65 Power Requirements 130
- DBK65 Voltage Regulation 130
- Customizing a Voltage 132
- Source Resistance in Ohms 134
- These jumpers do 136
- Series Devices 136
- 988793 DBK65 pg. 11 139
- DBK65 Specifications 140
- 988793 DBK65 pg. 13 141
- Vehicle Network Interface 143
- 989494 DBK80 pg. 3 147
- Card Configuration 148
- These jumpers do not 149
- Devices 149
- DBK80 - Specifications 150
- Open Thermocouple Detection 153
- POD-1 Dimensions 155
- TC Accuracy 159
- 989494 DBK84 pg. 7 167
- DBK84 - Specifications 168
- CE Compliance …… 4 169
- Specifications – DBK85 174
- 907492 DBK90 pg. 1 175
- 907492 DBK90 pg. 5 179
- 907492 DBK90 pg. 7 181
- 907492 DBK90 pg. 9 183
- Shielding 184
- TC Common Mode 184
- DBK90 – Specifications 187
- Description Part No 188
- DBK101 Hub Configuration 195
- TC Common Mode 198
- DaqBook/2000 Series Users: 205
- P4-to-P1 / P2 / P3 Adapters 207
- Screw-Terminal Adapter Board 209
- Connection Tips 210
- Using Screw-Terminal Blocks 212
- Using the P3 Header 217
- Connections 222
- P4-to-P1/P2/P3 Adapter Board 223
- 987594 DBK206, pg. 3 225
- 987594 DBK206, pg. 5 227
- 5B Carrier Boards 229
- Warnings, Cautions, and Tips 231
- External Ground Connection 232
- Channel Configuration 233
- 5B Module Connection 233
- DBK208 Relay Carrier Board 237
- DBK208, pg. 4 240
- External Power Watchdog 241
- Operation 241
- Switch Settings 244
- For Digital Output 244
- For Digital Input 244
- DBK208 – Specifications 245
- DBK208, pg. 10 246
- 909094 DBK209, pg. 3 249
- DBK209, pg. 4 250
- 987594 DBK210, pg. 3 253
- 987594 DBK210, pg. 5 255
- DBK210, pg. 6 256
- DBK210, pg. 8 258
- DaqView’s Channel Setup Tab 259
- In the above figure t 259
- DBK210 – Specifications 260
- Installing DBK Cards 263
- System Examples 264
- Example 2: 265
- 969294 DBK213, pg. 7 267
- 969294 DBK213, pg. 9 269
- 969294 DBK213, pg. 11 271
- Specifications for DBK213 272
- 969294 DBK213, pg. 13 273
- DBK213, pg. 14 274
- DBK214, pg. 2 276
- 279
- DBK214, pg. 6 280
- [2 Screws per-side] 280
- 967894 DBK214, pg. 7 281
- 967894 DBK214, pg. 9 283
- 967894 DBK214, pg. 11 285
- 967894 DBK214, pg. 13 287
- Specifications for DBK214 288
- 967894 DBK214, pg. 15 289
- DBK214, pg. 16 290
- DBK215, pg. 2 292
- System Example 294
- 897994 DBK215 pg. 7 297
- 897994 DBK215 pg. 9 299
- DBK215, pg. 12 302
- Specifications for DBK215 303
- DBK215, pg. 14 304
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