Campbell Scientific CR7 Measurement and Control System - Manual (Page 176)

LIST OF TABLES
LT-2
5. TELECOMMUNICATIONS
5.1-1 Telecommunication Commands ............................................................................................ 5-2
6. 9 PIN SERIAL INPUT/OUTPUT
6.1-1 Pin Description ....................................................................................................................... 6-1
6.5-1 DTE Pin Configuration ........................................................................................................... 6-3
8. PROCESSING AND PROGRAM CONTROL EXAMPLES
8.6-1 Example Sensor Description and 21X Multiplier and Offset .................................................. 8-6
8.6-2 Example Outputs and Input Storage Locations...................................................................... 8-7
8.6-3 Example Input Channel and Location Assignments............................................................... 8-7
9. INPUT/OUTPUT INSTRUCTIONS
9-1 Input Voltage Ranges and Codes .......................................................................................... 9-1
9-2 Pulse Count Configuration Codes .......................................................................................... 9-3
9-3 Thermocouple Type Codes.................................................................................................... 9-6
10. PROCESSING INSTRUCTIONS
10-1 Maximum Number of Outputs and Output Order for K Input Values ................................... 10-8
12. PROGRAM CONTROL INSTRUCTIONS
12-1 Flag Description ................................................................................................................... 12-1
12-2 Command Codes ................................................................................................................. 12-1
12-3 Loop Example: Block Data Transform ................................................................................ 12-3
12-4 Example: Loop With Delay Execution Interval = 10 seconds.............................................. 12-3
12-5 Comparison Codes .............................................................................................................. 12-4
13. CR7 MEASUREMENTS
13.3-1 Exponential Decay, Percent of Maximum Error vs. Time in Units of
τ................................. 13-4
13.3-2 Properties of Three Belden Lead Wires Used by Campbell Scientific ................................. 13-5
13.3-3 Settling Error, in Degrees, for 024A Wind Direction Sensor vs. Lead Length...................... 13-6
13.3-4 Measured Peak Excitation Transients for 1000 Foot Lengths of Three Belden
Lead Wires Used by Campbell Scientific ............................................................................. 13-6
13.3-5 Summary of Input Settling Data for Campbell Scientific Resistive Sensors ........................ 13-7
13.3-6 Maximum Lead Length vs. Error for Campbell Scientific Resistive Sensors ....................... 13-8
13.3-7 Source Resistances and Signal Levels for YSI #44032 Thermistor Configurations
Shown in Figure 13.3-7 ........................................................................................................ 13-9
13.4-1 Limits of Error for Thermocouple Wire............................................................................... 13-12
13.4-2 Limits of Error on CR7 Thermocouple Polynomials ........................................................... 13-13
13.4-3 Reference Temperature Compensation Range and Polynomial Error Relative to
NBS Standards................................................................................................................... 13-14
13.4-4 Example of Errors in Thermocouple Temperature............................................................. 13-14
13.5-1 Comparison of Bridge Measurement Instructions.............................................................. 13-17
13.5-2 Calculating Resistance Values from Bridge Measurement................................................ 13-18