Campbell Scientific CR10X Measurement and Control System - Manual (Page 8)

CR10X TABLE OF CONTENTS
iv
MEASUREMENTS
13. CR10X MEASUREMENTS
13.1 Fast and Slow Measurement Sequence .............................................................................. 13-1
13.2 Single-Ended and Differential Voltage Measurements ........................................................ 13-2
13.3 The Effect of Sensor Lead Length on the Signal Settling Time ........................................... 13-3
13.4 Thermocouple Measurements ........................................................................................... 13-12
13.5 Bridge Resistance Measurements ..................................................................................... 13-17
13.6 Resistance Measurements Requiring AC Excitation.......................................................... 13-21
13.7 Calibration Process ............................................................................................................ 13-22
INSTALLATION
14. INSTALLATION AND MAINTENANCE
14.1 Protection from the Environment.......................................................................................... 14-1
14.2 Power Requirements............................................................................................................ 14-1
14.3 Campbell Scientific Power Supplies..................................................................................... 14-2
14.4 Solar Panels ......................................................................................................................... 14-5
14.5 Direct Battery Connection to the CR10X Wiring Panel ........................................................ 14-6
14.6 Vehicle Power Supply Connections ..................................................................................... 14-6
14.7 Grounding............................................................................................................................. 14-7
14.8 Wiring Panel......................................................................................................................... 14-8
14.9 Switched 12 Volt................................................................................................................... 14-8
14.10 Use of Digital I/O Ports for Switching Relays ....................................................................... 14-8
14.11 Maintenance....................................................................................................................... 14-10
APPENDICES
A. GLOSSARY .............................................................................................................................. A-1
B. CONTROL PORT SERIAL I/O INSTRUCTION 15
B.1 Specifications ......................................................................................................................... B-1
B.2 Selected Operating Details..................................................................................................... B-1
B.3 Instruction 15 and Parameter Descriptions ............................................................................ B-2
B.4 Control Port Configurations and Sensor Wiring ..................................................................... B-5
B.5 Input Data Filters .................................................................................................................... B-6
B.6 Program Examples................................................................................................................. B-8
B.7 Summary of Barometer Jumper Configurations................................................................... B-15
C. ADDITIONAL TELECOMMUNICATIONS INFORMATION
C.1 Telecommunications Command with Binary Responses....................................................... C-1
C.2 Final Storage Format ............................................................................................................. C-4
C.3 Generation of Signature ......................................................................................................... C-5
C.4
∗D Commands to Transfer Program with Computer..............................................................C-6
D. CR10X 37 PIN PORT DESCRIPTION ............................................................................. D-1
E. ASCII TABLE ........................................................................................................................... E-1