Campbell Scientific CR1000KD CR1000 Measurement and Control System - Page 291
Status, Calibrate, VoltSE, Table 59., Status Table Calibration Entries
View all Campbell Scientific CR1000KD manuals
Add to My Manuals
Save this manual to your list of manuals |
Page 291 highlights
Section 8. Operation measurements (B) to be determined during CR1000 self-calibration (maximum of 54 values). These values can be viewed in the Status table, with entries identified as listed in table Status Table Calibration Entries (p. 291). Automatic self-calibration can be overridden with the Calibrate() instruction, which forces a calibration for each execution, and does not employ any low-pass filtering on the newly determined G and B values. There are two parameters associated with the Calibrate() instruction: CalRange and Dest. CalRange determines whether to calibrate only the necessary input ranges for a given CRBasic program (CalRange = 0) or to calibrate all input ranges (CalRange ≠ 0). The Dest parameter should be of sufficient dimension for all the returned G and B values, which is a minimum of two for the automatic self-calibration of VoltSE() including B (offset) for the ±2500 mV input range with first 250 µs integration, and a maximum of 54 for all possible integration durations and input-voltage ranges chosen. An example use of the Calibrate() instruction programmed to calibrate all input ranges is given as: 'Calibrate(Dest,Range) Calibrate(cal(1),true) where Dest is an array of 54 variables, and Range ≠ 0 to calibrate all input ranges. Results of this command are listed in the table Calibrate() Instruction Results (p. 293). Table 59. Status Table Calibration Entries Status Table Element CalGain(1) CalGain(2) CalGain(3) CalGain(4) CalGain(5) CalGain(6) CalGain(7) CalGain(8) CalGain(9) CalGain(10) CalGain(11) CalGain(12) CalGain(13) CalGain(14) CalGain(15) CalGain(16) CalGain(17) Differential (Diff) Single-Ended (SE) Descriptions of Status Table Elements Offset or Gain Gain Gain Gain Gain Gain Gain Gain Gain Gain Gain Gain Gain Gain Gain Gain Gain Gain ±mV Input Range 5000 2500 250 25 7.5 2.5 5000 2500 250 25 7.5 2.5 5000 2500 250 25 7.5 Integration 250 ms 250 ms 250 ms 250 ms 250 ms 250 ms 60-Hz Rejection 60-Hz Rejection 60-Hz Rejection 60-Hz Rejection 60-Hz Rejection 60-Hz Rejection 50-Hz Rejection 50-Hz Rejection 50-Hz Rejection 50-Hz Rejection 50-Hz Rejection 291