Operator`s manual

LF-1
LIST OF FIGURES
PAGE
OVERVIEW
OV1-1 21X Micrologger .................................................................................................................. OV-1
OV1-2 21X Wiring Panel and Associated Programming Instructions ............................................ OV-2
OV2-1 Instruction Types and Storage Areas.................................................................................. OV-4
OV2-2 Program and Subroutine Tables ......................................................................................... OV-6
OV5-1 Data Retrieval Hardware Options ..................................................................................... OV-17
2. INTERNAL DATA STORAGE
2.1-1 Ring Memory Representation of Final Data Storage ..............................................................2-1
2.1-2 Output Array ID .......................................................................................................................2-1
3. INSTRUCTION SET BASICS
3.8-1 If Then/Else Execution Sequence...........................................................................................3-4
3.8-2 Logical AND Construction.......................................................................................................3-5
3.8-3 Logical OR Construction .........................................................................................................3-5
4. EXTERNAL STORAGE PERIPHERALS
4.5-1 Example of 21X Printable ASCII Output Format.....................................................................4-7
6. 9 PIN SERIAL INPUT/OUTPUT
6.1-1 9 Pin Connector ......................................................................................................................6-1
6.5-1 Transmitting the ASCII Character 1 ........................................................................................6-4
7. MEASUREMENT PROGRAMMING EXAMPLES
7.1-1 Wiring Diagram for LI200S......................................................................................................7-1
7.2-1 Typical Connection for Active Sensor with External Battery ...................................................7-2
7.4-1 Thermocouples with External Reference Junction..................................................................7-3
7.7-1 Wiring Diagram for Anemometer ............................................................................................7-4
7.8-1 Wiring Diagram for Rain Gauge with Long Leads...................................................................7-4
7.9-1 Wiring Diagram for PRT in 4 Wire Half Bridge .......................................................................7-5
7.10-1 3 Wire Half Bridge Used to Measure 100 ohm PRT ...............................................................7-6
7.11-1 Full Bridge Schematic for 100 ohm PRT.................................................................................7-7
7.12-1 Wiring Diagram for Full Bridge Pressure Transducer.............................................................7-8
7.13-1 Lysimeter Weighing Mechanism .............................................................................................7-9
7.13-2 6 Wire Full Bridge Connection for Load Cell.........................................................................7-10
7.14-1 6 Gypsum Blocks Connected to the 21X ..............................................................................7-11
7.15-1 101 Thermistor Probes Connected to 21X............................................................................7-12
8. PROCESSING AND PROGRAM CONTROL EXAMPLES
8.3-1 AM416 Wiring Diagram for Thermocouple and Soil Moisture Block Measurements..............8-4
8.8-1 Simulated 1.25 and 0.25 Hz Signals .....................................................................................8-11
8.8-2 FFT Power Spectra Analysis of 0.25 and 1.25 Hz Signal .....................................................8-11
8.8-3 Simulated Ocean Buoy Wave Data.......................................................................................8-14
8.8-4 Simulated Ocean Buoy FFT Results.....................................................................................8-14