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Section 7. Measurement Instructions
7-24
CR23X
Pi
20k
FIGURE 7.8-1. Conditioning Large Voltage Pulses
The maximum input voltage on a pulse channel is ±20 V. Refer to Figure
7.8-1 if reducing input voltage is required.
• Pulse Channels
Maximum Input Voltage: ±20 V
High Frequency Input
• Pulse Channels
Minimum Pulse Width: 1.2 microsecond
Maximum Frequency: 400 kHz
(50% Duty Cycle)
Lower Threshold: 1.5 V*
Upper Threshold: 3.5 V*
When a pulse channel is configured for high-frequency pulse, there is an
internal 100 kohm pull-up resistor to 5 V on the pulse channel. This pull-up
resistor accommodates open-collector output devices for high-frequency input.
*Larger input transitions are required at high frequencies because of the input
RC filter with 1.2 microsecond time constant. Signals up to 400 kHz will be
counted if centered around +2.5 V with deviations ≥ ± 2.5 V for ≥ 1.2
microseconds.
Low Level AC (Pulse Channels Only)
Input Hysteresis: 15 mV
Maximum Input Voltage: 20 V peak-to-peak
Input Voltage and Frequency Range
(16 bit counter required above 2.56 kHz)
20 mV 1.0 Hz to 1 kHz
200 mV 0.5 Hz to 10 kHz
1000 mV 0.3 Hz to 16 kHz
CR5000
- CR5000 Measurement and 1
- Control System 1
- Warranty and Assistance 2
- TABLE OF CONTENTS 3
- APPENDIX 4
- CR5000 MICROLOGGER 6
- OV2.1 Memory 9
- OV2.3 Data Tables 10
- OV3.2 PC9000 Installation 10
- OV3.3.1 File 13
- OV3.3.2 Edit 13
- OV4. Keyboard Display 15
- OV4.1 Data Display 16
- OV4.1.1 Real Time Tables 17
- CR5000 Overview 18
- OV4.2 Run/Stop Program 20
- OV4.3 File Display 21
- OV4.3.1 File: Edit 22
- OV4.4 Configure Display 23
- OV5. Specifications 24
- 1.2 Power Requirements 25
- 1.3 CR5000 Power Supplies 26
- 1.4 Solar Panels 28
- BOOST REGULATOR 29
- 1.7 CR5000 GROUNDING 30
- CR5000 ICROLOGGER 31
- 1.10 Maintenance 36
- BATTERY2 38
- (datalogger/cr5000) 38
- 2.1 Data Storage in CR5000 41
- 2.2 Internal Data Format 42
- 2.3 Data Collection 43
- 2.3.1.1 File Type 44
- 2.3.1.2 Collection Method 44
- 2.3.1.3 Table Selection 45
- 2.3.1.4 File Control 45
- 2.3.2 RealTime Write File 46
- 2.3.3 Logger Files Retrieve 47
- 2.3.4 Via PCMCIA PC Card 47
- 2.4 Data Format on Computer 50
- 2.4.2 TOA5 ASCII File Format 51
- 3.1.1 Voltage Range 55
- 3.1.4 SettlingTime 57
- 3.1.5 Integration 57
- Measurements 58
- 3.3 Signal Settling Time 59
- 3.4.1 Error Analysis 62
- Thermocouple Limits of Error 65
- Noise on Voltage Measurement 67
- Error Summary 69
- CR5000 Junction Box 70
- 3.7 Pulse Count Measurements 74
- 3.8 Self Calibration 75
- 4.1 Format Introduction 77
- 4.2 Programming Sequence 78
- 4.3 Example Program 80
- CallTable Temp 82
- 4.4 Numerical Entries 83
- 4.6 Flags 84
- 4.7 Parameter Types 85
- 'Calibration factors: 86
- Station Name 91
- Sub, Exit Sub, End Sub 91
- Subroutine Example 93
- 6.1 Data Table Declaration 95
- 6.2 Trigger Modifiers 96
- OpenInterval 97
- FillStop 99
- 6.3 Export Data Instructions 102
- TableOption 103
- BufferControl 103
- Highlimit, MinAmp, Form) 118
- Code Form 119
- Constant 119
- Measured raw data: 123
- 7.8 Digital I/O 128
- 7.9 Peripheral Devices 128
- 7.1 Voltage Measurements 129
- Integ, Mult, Offset) 130
- 7.3 Half Bridges 131
- 7.4 Full Bridges 134
- 7.5 Current Excitation 137
- 7.7 Self Measurements 141
- Calibrate (Dest, AllRanges) 142
- ± 10 mV) and resolution 146
- Silicon diodes 146
- . Resistor 146
- PortGet (Dest, Port) 147
- PortSet (Port, State) 148
- Pulse Channel 149
- PulseCountReset 151
- ReadIO (Dest, Mask) 151
- TimerIO 153
- WriteIO (Mask, Source) 154
- SDMAddress 156
- SEG TSEG q22 158
- Parameter 160
- & Data Type 160
- Description 165
- Result 167
- SDMSpeed (BitPeriod) 168
- SDMTrigger 168
- ValuesPerRep 170
- This is a blank page 172
- Instructions 173
- ACOS (Source) 174
- ASIN (Source) 175
- ATN (Source) 176
- AvgSpa (Dest, Swath, Source) 177
- Cos (Source) 179
- CosH (Source) 179
- Variable or 180
- Frac (Source) 183
- Int, Fix 186
- Log (Source) 187
- LOG10 (number) 187
- MemoryTest 188
- MaxSpa (Dest, Swath, Source) 188
- MinSpa (Dest, Swath, Source) 189
- Move (Dest, Swath, Source) 190
- Randomize 194
- RealTime 195
- RectPolar (Dest, Source) 196
- RMSSpa (Dest, Swath, Source) 197
- RND (Source) 197
- Sgn (Source) 201
- Sin (Source) 201
- SinH (Source) 202
- Sqr (Source) 202
- StdDevSpa 203
- Tan (Source) 203
- TANH (Source) 204
- Derived Math Functions 205
- Section 9. Program Control 207
- CallTable 208
- Data, Read, Restore 209
- ClockSet 209
- Delay (Option, Delay, Units) 210
- FileManage 212
- FileMark (TableName) 213
- For ... Next Statement 213
- Power Off 217
- RunDLDFile 218
- Reset Table 219
- Select Case Statement 221
- Slow Sequence 223
- While…Wend 227
- This is a blank 236
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