Campbell Scientific CR1000 Measurement and Control System - Manual (Page 20)

Table of Contents
20
Figure 49: Quarter-bridge strain-gage schematic with RC-resistor shunt ... 163
Figure 50: Strain-gage shunt calibration started.......................................... 165
Figure 51: Strain-gage shunt calibration finished........................................ 165
Figure 52: Starting zero procedure.............................................................. 166
Figure 53: Zero procedure finished ............................................................. 166
Figure 54: Preconfigured HTML Home Page ............................................. 168
Figure 55: Home page created using WebPageBegin() instruction............. 169
Figure 56: Customized numeric-monitor web page .................................... 169
Figure 57: Entering SDI-12 transparent mode ............................................ 173
Figure 58: Mean wind-vector graph............................................................ 191
Figure 59: Standard Deviation of Direction ................................................ 192
Figure 60: Custom menu example — home screen..................................... 194
Figure 61: Custom menu example — View-Data window ......................... 194
Figure 62: Custom menu example — Make-Notes sub menu..................... 194
Figure 63: Custom menu example — Predefined-notes pick list ................ 195
Figure 64: Custom menu example — Free-Entry notes window ................ 195
Figure 65: Custom menu example — Accept / Clear notes window........... 195
Figure 66: Custom menu example — Control sub menu ............................ 195
Figure 67: Custom menu example — control-LED pick list....................... 196
Figure 68: Custom menu example — control-LED Boolean pick list ........ 196
Figure 69: HyperTerminal New Connection description ............................ 212
Figure 70: HyperTerminal Connect-To settings.......................................... 212
Figure 71: HyperTerminal COM-Port Settings Tab.................................... 213
Figure 72: HyperTerminal ASCII setup...................................................... 213
Figure 73: HyperTerminal send text-file example ...................................... 214
Figure 74: HyperTerminal text-capture file example .................................. 214
Figure 75: Data from TrigVar program....................................................... 223
Figure 76: Alarms toggled in bit-shift example .......................................... 228
Figure 77: Bool8 data from bit-shift example (numeric monitor)............... 228
Figure 78: Bool8 data from bit-shift example (PC data file)....................... 229
Figure 79: PT100 in four-wire half-bridge.................................................. 259
Figure 80: PT100 in three-wire half-bridge................................................. 261
Figure 81: PT100 in four-wire full-bridge................................................... 263
Figure 82: Running-average equation ......................................................... 263
Figure 83: Running-average frequency response ........................................ 265
Figure 84: Running-average signal attenuation........................................... 266
Figure 85: PGI amplifier ............................................................................. 275
Figure 86: PGIA with input signal decomposition...................................... 275
Figure 87: Voltage measurement accuracy (0° to 40°C)............................. 279
Figure 88: Ac power line noise rejection techniques .................................. 285
Figure 89: Input voltage rise and transient decay........................................ 286
Figure 90: Settling time for pressure transducer ......................................... 289
Figure 91: Deriving ∆V1............................................................................. 299
Figure 92: Panel-temperature error summary.............................................. 303
Figure 93: Panel-temperature gradients (low temperature to high)............. 304
Figure 94: Panel-temperature gradients (high temperature to low)............. 304
Figure 95: Input error calculation................................................................ 307
Figure 96: Diagram of a thermocouple junction box .................................. 312
Figure 97: Pulse-sensor output signal types ................................................ 313
Figure 98: Switch-closure pulse sensor....................................................... 313
Figure 99: Pulse input channels................................................................... 314
Figure 100: Connecting switch closures to digital I/O ................................ 317
Figure 101: Amplitude reduction of pulse-count waveform (before and
after 1-µs time constant filter).............................................................. 321
Figure 102: Input conditioning circuit for period averaging ....................... 323
Figure 103: Circuit to limit control port input to 5 Vdc .............................. 324