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Chapter 14 SCXI Hardware
©
National Instruments Corporation 14-15 DAQ Hardware Overview Guide
The SCXI-1141, SCXI-1142, and SCXI-1143 have a software-selectable
calibration mode that you can select with the
SCXI_Calibrate_Setup
function. You can ground each input of each amplifier so that you can read
the amplifier offsets. The SCXI-1141, SCXI-1142, and SCXI-1143 also
have an onboard EEPROM that contains a set of factory gain adjustment
calibration constants for each amplifier on the module. NI-DAQ
automatically reads these constants and uses them in the
SCXI_Scale
function to compensate for amplifier gain errors when scaling binary data
to voltage data. You also can perform your own amplifier calibration by
taking readings and using the
SCXI_Cal_Constants function to store
your own calibration constants in the EEPROM.
The SCXI-1304 terminal block provides either AC or DC coupling of input
signals. This terminal block also has a ground reference for floating signals.
SCXI Analog Output Module
The following device is an SCXI analog output module.
SCXI-1124
The SCXI-1124 is a 6-channel analog output module capable of generating
voltages between −10 and +10 V or currents between 0 and 20 mA. The
SCXI-1124 has six independent 12-bit DACs. Each DAC channel has a
software-selectable voltage or current output range. Use the
SCXI_AO_Write function to set the output range and write voltages,
currents, or binary values to the DACs. The SCXI-1124 is designed for
single-point output operations rather than waveform generation.
The SCXI-1124 has an onboard EEPROM that contains a set of
factory-calibration constants for each DAC. NI-DAQ automatically loads
these constants so that the
SCXI_AO_Write function can compute the
12-bit binary pattern needed to produce your desired voltage at the output.
You can also compute your own calibration constants by writing binary
values to the DACs, measuring the output voltage with a voltmeter, and
using the
SCXI_Cal_Constants function to calculate and store the
constants in the module EEPROM.
The SCXI-1124 supports multiplexed mode only. You can cable an MIO or
AI device, Lab-PC-1200, Lab-PC-1200AI, Lab-PC+, PCI-1200, or
DAQCard-1200 to the SCXI-1124, in which case you should set the
jumpers on the module for MIO operation. You can cable a DIO device to
the SCXI-1124, in which case you should set the jumpers on the module for
DIO operation. If there is another module in the chassis cabled to a DAQ
device in multiplexed mode or if there is an SCXI-1200 module in the
- DAQ Hardware Overview 1
- Important Information 3
- Chapter 14 7
- SCXI Hardware 7
- Glossary 10
- Contents 11
- About This Guide 12
- MIO and AI Device Terminology 15
- Table 1 16
- Related Documentation 17
- MIO and AI Devices 18
- Chapter 1 MIO and AI Devices 19
- E Series Data Acquisition 20
- Set_DAQ_Device_Info 22
- MIO Device Analog Output 24
- E Series Digital I/O 26
- E Series PFI Pins 27
- Lab and 1200 Devices 28
- AI_Trigger_Config.vi 31
- DAQ_StopTrigger_Config 31
- Table 2-2 32
- Lab and 1200 Devices Groups 33
- Figure 2-1 34
- 1200 Device Acquisition Rate 35
- 1200 Device Calibration 36
- LPM Devices 37
- DAQ_Config 38
- LPM Device Digital I/O 39
- LPM Device Counter/Timers 40
- 516 Devices and 41
- DAQCard-500/700 Devices 41
- DAQ_Config. If you do 43
- Counter/Timer Operation 44
- Figure 4-2 45
- AT-AO-6/10 Analog 46
- Output Devices 46
- AT-AO-6/10 Digital I/O 48
- 6703/6704 Devices 49
- PC-TIO-10 Timing I/O Device 50
- PC-TIO-10 Counter/Timers 54
- PC-TIO-10 Digital I/O 55
- DIO-96 Digital I/O Devices 56
- DIO-96 Groups 57
- DIO-24 (6503) 58
- AT-MIO-16DE-10, and 6025E 58
- DIO-32F and 6533 60
- Digital I/O Devices 60
- Digital_Buffer_Write.vi) 62
- AMUX-64T External 63
- Multiplexer Accessory 63
- Table 11-2 64
- AMUX-64T Channel Numbers 64
- SCAN_Setup or 65
- MIO_Config 67
- Accessories 68
- SC-2042-RTD Accessory 69
- SC-2043-SG Accessory 69
- SCC Series Modules 70
- SCC-CI20 Current Input Module 72
- SCC-LP Lowpass Filter Modules 73
- SCC Configuration 74
- SCXI Operating Modes 76
- Chapter 14 SCXI Hardware 77
- SCXI Data Acquisition Device 80
- SCXI-1200 80
- SCXI Analog Input Modules 81
- SCXI-1100 81
- SCXI-1101 82
- SCXI-1104/C 83
- SCXI-1112 83
- SCXI_Scale function to 84
- SCXI_Single_Chan_Setup 84
- SCXI-1125 85
- SCXI-1122 85
- SCXI-1126 86
- SCXI-1127 87
- SCXI-1140 87
- SCXI Analog Output Module 89
- SCXI-1124 89
- SCXI Digital Modules 90
- SCXI-1160 and SCXI-1161 90
- SCXI-1162 and SCXI-1162HV 91
- SCXI-1163 and SCXI-1163R 91
- SCXI-1530, SCXI-1531 92
- SCXI-1540 92
- SCXI_Track_Hold_Setup 94
- DIO-24 and the DIO-96 96
- DIO-32F and 6533 Device 97
- VXI-DAQ Devices 99
- AO_Change_Parameter or the 100
- Multifunction VXIbus Devices 101
- VXI-DAQ Signal Conditioning 102
- VXI-SC-1102 Submodule 103
- VXI-SC-1150 Submodule 103
- PXI DAQ Devices 104
- PXI DAQ Signal Conditioning 105
- NI 5411 Devices 106
- Chapter 17 NI 5411 Devices 107
- DDS Mode 108
- Table 17-2 110
- NI 5411 Operational Modes 110
- Device Analog Input 112
- Data Acquisition 113
- Acquisition Timing 114
- Current Source 115
- Digital I/O 115
- Device Input 116
- Chapter 19 NI 40XX Devices 118
- DSA Devices 119
- and NI 455 120
- Analog Input Channels 120
- Data Acquisition Timing 121
- Channels 122
- Digital I/O 123
- Counter/Timer Operation 124
- Devices 125
- Chapter 21 671X Devices 126
- Technical Support Resources 129
- Worldwide Support 130
- Numbers/Symbols 131
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