Campbell CR3000 Micrologger, Operator'S Manual

Page: 337 / 644

Section 8. Operation
337
'Allow data to be stored 510 ms into the Scan with a s.51 time stamp
SlowSequence
Do
WaitTriggerSequence
CallTable (Test)
Loop
EndProg
Other time-processing CRBasic instructions are governed by these same rules.
Consult CRBasic Editor Help for more information on specific instructions.
8.1.2 Analog Measurements — Details
Related Topics:
• Analog Measurements — Overview
(p. 67)
• Analog Measurements — Details
(p. 337)
The CR3000 measures the following sensor analog output types:
•
Voltage
o
Single-ended
o
Differential
•
Current (using a resistive shunt)
•
Resistance
•
Full-bridge
•
Half-bridge
Sensor connection is to H/L terminals configured for differential (DIFF) or
single-ended (SE) inputs. For example, differential channel 1 is comprised of
terminals 1H and 1L, with 1H as high and 1L as low.
8.1.2.1 Voltage Measurement Quality
Read More Consult the following technical papers at
www.campbellsci.com/app-notes for in-depth treatments of several topics
addressing voltage measurement quality:
• Preventing and Attacking Measurement Noise Problems
• Benefits of Input Reversal and Excitation Reversal for Voltage
Measurements
• Voltage Measurement Accuracy, Self- Calibration, and Ratiometric
Measurements
• Estimating Measurement Accuracy for Ratiometric Measurement
Instructions.