22.7.2 Program send reset 177
22.7.3 Manual data table reset 178
22.7.4 Formatting drives 178
22.7.5 Full memory reset 178
22.8 Troubleshooting power supplies 178
22.9 Using terminal mode 179
22.9.1 Serial talk through and comms watch 181
22.9.2 SDI-12 transparent mode 181
22.9.2.1 Watch command (sniffer mode) 183
22.9.2.2 SDI-12 transparent mode commands 183
22.9.3 Terminal master 184
22.10 Ground loops 184
22.10.1 Common causes 184
22.10.2 Detrimental effects 185
22.10.3 Severing a ground loop 187
22.10.4 Soil moisture example 187
22.11 Improving voltage measurement quality 189
22.11.1 Deciding between single-ended or differential measurements 189
22.11.2 Minimizing ground potential differences 190
22.11.2.1 Ground potential differences 191
22.11.3 Minimizing power-related artifacts 191
22.11.3.1 Minimizing electronic noise 192
22.11.4 Filtering to reduce measurement noise 193
22.11.5 Minimizing settling errors 196
22.11.5.1 Measuring settling time 196
22.11.6 Factors affecting accuracy 198
22.11.6.1 Measurement accuracy example 199
22.11.7 Minimizing offset voltages 199
22.12 Field calibration 201
22.13 File name and resource errors 201
23. Information tables and settings (advanced) 202
23.1 DataTableInfo table system information 203
23.1.1 DataFillDays 203
23.1.2 DataRecordSize 203
23.1.3 DataTableName 203
23.1.4 RecNum 204
Table of Contents - viii
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