Campbell Scientific CR200/CR200X-series Dataloggers - Manual (Page 5)

Table of Contents
Section 1. Introduction ............................................... 1
1.1 CR200(X) series Datalogger Models ..................................................................... 1
Section 2. Quickstart Tutorial .................................... 3
2.1 Primer - CR200(X) Data Acquisition..................................................................... 3
2.1.1 Components of a Data Acquisition System .............................................. 3
2.1.2 CR200(X) Mounting ................................................................................. 4
2.1.3 Wiring Panel ............................................................................................. 4
2.1.4 Battery Backup ......................................................................................... 5
2.1.5 Power Supply ............................................................................................ 5
2.1.6 Antenna ..................................................................................................... 5
2.1.7 Analog Sensors ......................................................................................... 6
2.1.8 Bridge Sensors .......................................................................................... 6
2.1.9 Pulse Sensors ............................................................................................ 7
2.1.10 Digital I/O Ports ........................................................................................ 8
2.1.11 RS-232 Sensors ......................................................................................... 9
2.2 Hands-on Exercise - Measuring Temperature ...................................................... 10
2.2.1 Hardware Setup ....................................................................................... 11
2.2.2 Configuration .......................................................................................... 11
2.2.3 PC200W Software Setup ........................................................................ 11
Section 3. Overview .................................................. 23
3.1 CR200(X) Overview ............................................................................................ 23
3.1.1 Programmed Instructions Are Evaluated Sequentially ........................... 24
3.1.2 Sensor Support ........................................................................................ 25
3.1.3 Input / Output Interface: The Wiring Panel ............................................ 25
3.1.4 Power Requirements ............................................................................... 29
3.1.5 Programming: Firmware and User Programs ......................................... 29
3.1.6 Memory and Data Storage ...................................................................... 30
3.1.7 Communications Overview .................................................................... 31
3.1.8 Maintenance Overview ........................................................................... 32
3.2 PC Support Software ............................................................................................ 34
3.3 Specifications ....................................................................................................... 35
Section 4. Sensor Support ....................................... 37
4.1 Powering Sensors ................................................................................................. 37
4.1.1 Switched Precision .................................................................................. 37
4.1.2 Continuous Unregulated (Nominal 12 Volt) ........................................... 37
4.1.3 Switched Unregulated (Nominal 12 Volt) .............................................. 38
4.2 Voltage Measurement .......................................................................................... 38
4.2.1 Measurement Sequence .......................................................................... 38
4.2.2 Measurement Accuracy .......................................................................... 38
4.2.3 Voltage Range......................................................................................... 40
4.2.4 Integration ............................................................................................... 40
4.2.5 Self-Calibration ....................................................................................... 41
4.3 Bridge Resistance Measurements ........................................................................ 41
4.3.1 Measurements Requiring AC Excitation ................................................ 42
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