Campbell CR300 Series Operator's Manual page 8

Table of Contents
7. Specifications ........................................................... 42
8. Maintenance ............................................................. 50
6.1.2.2 Ratiometric Accuracy ...................................................... 30
6.1.3 Current Measurements - Details ................................................ 30
6.1.3.1 Voltage Ranges for Current Measurements ..................... 31
6.1.3.2 0-20 mA and 4-20 mA Measurements ............................. 31
6.2 Pulse Measurements - Details ........................................................... 33
6.3 Period Averaging - Details ............................................................... 34
6.4 Digital Input/Ouput - Details ............................................................ 34
6.5 Communication - Details .................................................................. 34
6.5.1 Communication Ports ................................................................. 34
6.5.1.1 USB Port .......................................................................... 35
6.5.1.2 RS-232 Port ..................................................................... 35
6.5.1.3 SDI-12 Ports .................................................................... 35
6.5.2 General Serial Communications ................................................. 35
6.5.3 SDI-12 Communications ............................................................ 35
6.5.4 Modbus Communications .......................................................... 36
6.5.5 DNP3 Communications ............................................................. 36
6.5.6 PakBus Communications ........................................................... 36
6.5.7 Internet Communications ........................................................... 37
6.6 Grounding - Details .......................................................................... 37
6.6.1 Lightning Protection ................................................................... 38
6.7 Power................................................................................................. 39
6.7.1 Power In ..................................................................................... 39
6.7.1.1 Power Sources ................................................................. 39
6.7.1.2 Power LED Indicator ....................................................... 40
6.7.1.3 Calculating Power Consumption ..................................... 40
6.7.2 Power Out .................................................................................. 40
6.8 Memory ............................................................................................. 41
6.8.1 Data Storage ............................................................................... 41
6.8.2 CPU Drive .................................................................................. 42
6.9 Time Keeping .................................................................................... 42
7.1 Voltage Measurements - Specifications............................................ 42
7.2 Resistance Measurements - Specifications ....................................... 44
7.3 Voltage Excitation - Specifications .................................................. 45
7.4 Current Measurements - Specifications ............................................ 45
7.5 Pulse Measurements - Specifications ............................................... 45
7.5.1 Switch-Closure Input ................................................................. 45
7.5.2 High-Frequency Input ................................................................ 46
7.5.3 Low-Level AC Input .................................................................. 46
7.6 Period Averaging - Specifications .................................................... 46
7.7 Digital Input/Output - Specifications ................................................ 47
7.8 Switched Voltage Output - Specifications ........................................ 47
7.9 Pulse-Width Modulation - Specifications ......................................... 48
7.10 Communication - Specifications ....................................................... 48
7.11 System - Specifications..................................................................... 48
7.12 Power Requirements - Specifications ............................................... 49
7.13 Compliance - Specifications ............................................................. 49
7.14 Physical - Specifications ................................................................... 49
7.15 RF407, RF412, and RF422 Radio Options - Specifications ............. 50
8.1 Calibration ......................................................................................... 51
8.2 Sending an Operating System ........................................................... 51
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