Campbell CR6 Series, Руководство оператора

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Section 7. Installation
305
Voltage Measurement Instruction Parameters for Dwell Burst
Parameters Description
Destination
A variable array dimensioned to store all measurements from one input. For
example, the declaration,
Dim FastTemp(500)
dimensions array FastTemp() to store 500 measurements, which is one second of
data at 500 Hz or one-half second of data at 1000 Hz.
The dimension can be any integer from
1 to 65535 .
Count (was Repetitions )
The number of measurements to make on one channel. This number usually
equals the number of elements dimensioned in the Destination array.
Valid arguments range from 1 to 65535 .
Voltage Range
The analog-input voltage range to be used during measurements. No change from
standard measurement mode. Use any valid voltage range. However, ranges
appended with
C
cause measurements to be slower.
Single-Ended Channel
The single-ended analog-input terminal number preceded by a dash ( - ). Valid
arguments range from - U 1 to - U12.
Differential Channel
The differential analog input terminal number preceded by a dash ( - ). Valid
arguments range from - U 1 to - U11.
Measure Offset No change from standard measurement mode. For fastest rate, set to False.
Measurements per Excitation Must equal the value entered in Repetitions .
Reverse Ex No change from standard measurement mode. For fastest rate, set to False.
Rev Diff
No change from standard measurement mode. For fastest rate, set to
False.
SettlingTime
Settling time in µs. Range is 100 to 600000 µs. Shorter settling times allow faster
bursts.
[SampleRate (Hz)]
Measurement rate in Hz. Range is 5 to 93750 Hz.Arguments 50 and 60 are valid
for ac rejection but are probably not very useful in burst applications.
Multiplier
No change from standard measurement mode. Enter the proper multiplier. This is
the slope of the linear equation that equates output voltage to the measured
phenomena. Any number greater or less than 0 is valid.
Offset
No change from standard measurement mode. Enter the proper offset. This is the
Y intercept of the linear equation that equates output voltage to the measured
phenomena.
7.7.13.1 Tips — Fast Analog Voltage
•
In the preceding examples, the CR6 disables the auto self-calibration to
reach the stated measurement speeds. Disabling auto self-calibration
increases the risk of measurement errors, especially when the CR6 is
exposed to temperature swings.