Campbell CR6 Series, Руководство оператора

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Table of Contents
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FIGURE 77: HyperTerminal New Connection Description ....................... 369
FIGURE 78: HyperTerminal Connect-To Settings ..................................... 369
FIGURE 79: HyperTerminal COM Port Settings Tab: Click File |
Properties | Settings | ASCII Setup... and set as shown. ....................... 370
FIGURE 80: HyperTerminal ASCII Setup ................................................. 370
FIGURE 81: HyperTerminal Send-Text File Example ............................... 371
FIGURE 82: HyperTerminal Text-Capture File Example .......................... 371
FIGURE 83: Normalized Sinc Frequency Response .................................. 392
FIGURE 84: Input voltage rise and transient decay .................................... 393
FIGURE 85: Settling Time for Pressure Transducer .................................. 395
FIGURE 86: Example voltage measurement accuracy band, including
the effects of percent of reading and offset, for a differential
measurement with input reversal at a temperature between –40 to
70 °C. ................................................................................................... 404
FIGURE 87: PGIA with Input Signal Decomposition ................................ 418
FIGURE 88: Simplified voltage measurement sequence. Because the
CR6 uses digital signal processing (DSP) to make voltage
measurements, integration and A to D measurement are actually
combined functions. Effective integration time equals 1/fN1, fN1
being the "digital filter" entered into the measurement instruction. ..... 419
FIGURE 89: Programmable Gain Input Amplifier (PGIA): H to V+, L
to V–, VH to V+, VL to V– correspond to text. ................................... 420
FIGURE 90: Normalized Sinc Frequency Response .................................. 425
FIGURE 91: Input voltage rise and transient decay .................................... 426
FIGURE 92: Settling Time for Pressure Transducer .................................. 429
FIGURE 93: Example voltage measurement accuracy band, including
the effects of percent of reading and offset, for a differential
measurement with input reversal at a temperature between –40 to
70 °C. ................................................................................................... 437
FIGURE 94: Pulse Sensor Output Signal Types ......................................... 440
FIGURE 95: Switch Closure Pulse Sensor ................................................. 440
FIGURE 96: Terminals Configurable for Pulse Input ................................ 440
FIGURE 97: Amplitude reduction of pulse count waveform (before and
after 1 µs µs time-constant filter) ......................................................... 446
FIGURE 98: Vibrating Wire Sensor ........................................................... 447
FIGURE 99: VSPECT Vibrating Wire Measurement Wiring .................... 449
FIGURE 100: Unconditioned Time Domain Data ...................................... 450
FIGURE 101: VSPECT Data ...................................................................... 450
FIGURE 102: Narrow Sweep, Low Noise .................................................. 452
FIGURE 103: Wide Sweep, Low Noise ..................................................... 453
FIGURE 104: Narrow Sweep, High Noise ................................................. 454
FIGURE 105: Wide Sweep, High Noise ..................................................... 455
FIGURE 106: Vibrating Wire Sensor Calibration Report ........................... 459
FIGURE 107: Error from thermistor wire resistance. Computed for a
two-wire thermistor embedded in a vibrating wire sensor.
Thermistor lead-wire resistance is 16 Ω per 1000 feet; size is 22
AWG. Shows error increasing with cable temperature and length. ... 462
FIGURE 108: Error from thermistor wire resistance on 1000 ft
(304.8 m) of cable. Computed for a two-wire thermistor
embedded in a vibrating wire sensor. Thermistor lead wire
resistance is 16 Ω per foot; size is 22 AWG.. Shows error
increasing with cable temperature. ....................................................... 462
FIGURE 109: Error from thermistor wire resistance on 3000 ft
(914.4 m) of cable. Computed for a two-wire thermistor
embedded in a vibrating wire sensor. Thermistor lead wire