Table 75. Calibrate() Instruction Results
Array
Cal()
Element
Descriptions of Array Elements
Typical Value
Differential (Diff)
Single-Ended (SE)
Offset or Gain
±mV Input
Range
Integration
44 Diff Offset 250 50 Hz Rejection ±5 LSB
45 Gain 250 50 Hz Rejection –0.067 mV/LSB
46 SE Offset 25 50 Hz Rejection ±5 LSB
47 Diff Offset 25 50 Hz Rejection ±5 LSB
48 Gain 25 50 Hz Rejection –0.0067 mV/LSB
49 SE Offset 7.5 50 Hz Rejection ±10 LSB
50 Diff Offset 7.5 50 Hz Rejection ±10 LSB
51 Gain 7.5 50 Hz Rejection –0.002 mV/LSB
52 SE Offset 2.5 50 Hz Rejection ±20 LSB
53 Diff Offset 2.5 50 Hz Rejection ±20 LSB
54 Gain 2.5 50 Hz Rejection –0.00067 mV/LSB
8.1.3 Pulse Measurements — Details
Related Topics:
• Pulse Measurements — Specifications
• Pulse Measurements — Overview
(p. 68)
• Pulse Measurements — Details (p. 349)
• Pulse Measurements — Instructions (p. 553)
Read More Review the PULSE COUNTERS (p. 349) and Pulse on C Terminals
sections in CR1000 Specifications (p. 97). Review pulse measurement programming
in CRBasic Editor Help for the PulseCount() and TimerIO() instructions.
Note Peripheral devices are available from Campbell Scientific to expand the
number of pulse-input channels measured by the CR1000. Refer to the appendix
Measurement and Control Peripherals Lists
(p. 366) for more information.
The figure Pulse-Sensor Output-Signal Types (p. 69) illustrates pulse signal types
measurable by the CR1000:
• low-level ac
• high-frequency
• switch-closure
The figure Switch-Closure Schematic
(p. 350) illustrates the basic internal circuit
and the external connections of a switch-closure pulse sensor. The table Pulse
Measurements: Terminals and Programming
(p. 351) summarizes available
measurements, terminals available for those measurements, and the CRBasic
instructions used. The number of terminals configurable for pulse input is
determined from the table CR1000 Terminal Definitions
(p. 76).
349