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Chapter 14 SCXI Hardware
©
National Instruments Corporation 14-7 DAQ Hardware Overview Guide
multiplex their input channels and send them on the analog bus on the
SCXI backplane. So, if you configure the SCXI-1200 for multiplexed
mode, you can use it to read the multiplexed output from other SCXI analog
input modules in the chassis. In addition, you can multiplex the analog
input channels on the SCXI-1200 with the input channels from other analog
input modules in the chassis during the same scanning operation. The
SCXI-1200 switches its analog input channels in descending order (the
other analog input modules switch their channels in ascending order). The
SCXI Application Tips section in Chapter 3, Software Overview, of the
NI-DAQ User Manual for PC Compatibles explains how to use the SCXI
functions in analog input applications with the SCXI-1200 in multiplexed
mode.
If you are not using other analog input modules in the chassis along with
the SCXI-1200, you should configure the SCXI-1200 for stand-alone
mode. In stand-alone mode you do not need the SCXI functions to perform
analog input operations, you simply use the SCXI-1200 with the
DAQ and
Lab_ISCAN functions as if it were a plug-in device inside your PC. You can
still use digital or relay modules or analog output modules in the chassis
with the SCXI-1200 configured for parallel mode; you need SCXI
functions to operate those modules.
When you perform analog input data acquisition with the SCXI-1200
connected to the parallel port of the PC, the module issues an interrupt
through the parallel port, which the PC services to retrieve data. When the
SCXI-1200 is connected to the PC through a remote SCXI configuration,
NI-DAQ will query the remote SCXI unit for the presence of acquired data,
and the remote SCXI unit will send data back serially to the PC.
SCXI Analog Input Modules
The following modules are the SCXI analog input modules.
SCXI-1100
The SCXI-1100 module has 32 differential analog input channels.
The input voltage range is −10 to +10 V. The SCXI-1100 has a
software-selectable module gain with values of 1, 2, 5, 10, 20, 50, 100, 200,
500, 1,000, and 2,000. The gain applies to all channels on the module; use
the
SCXI_Set_Gain function to select the module gain. The gain fields in
Measurement & Automation Explorer are not used by NI-DAQ; those
fields are used only by LabVIEW.
The SCXI-1100 also has a
software-selectable Calibration mode that you can use to determine the
zero offset of the module—see the
SCXI_Calibrate_Setup function
description.
- 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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