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Chapter 14 SCXI Hardware
©
National Instruments Corporation 14-13 DAQ Hardware Overview Guide
function: 1 Hz, 40 Hz, 320 Hz, and 1 kHz. Use the SCXI_Set_Threshold
function to select the level and offset for a hysteresis setting.
The SCXI-1126 has an onboard EEPROM that contains a set of
factory-calibration constants for the amplifier on the module. NI-DAQ
automatically reads these constants and uses them in the
SCXI_Scale
function to compensate for amplifier gain and offset errors when scaling
binary data to frequency. You can also perform your own module
calibration by taking readings and using the
SCXI_Cal_Constants
function to store your own calibration constants in the EEPROM.
You can use the SCXI-1327, SCXI-1305, SCXI-1328, TBX-1328, and
TBX-1329 terminal blocks with the SCXI-1126. The SCXI-1126 module
supports both multiplexed and parallel operating modes.
SCXI-1127
The SCXI-1127 has 32 high-voltage differential channels and one
cold-junction sensor channel (CJTEMP) that you can select through the
SCXI_Single_Chan_Setup function. When you use this module with an
SCXI-1331 terminal block, the terminal block temperature sensor connects
to CJTEMP. The sensor on the SCXI-1331 has a voltage range of 23 mV
(at 50 °C) to 200 mV (at 0 °C). The module can multiplex CJTEMP with
the other 32 input channels during a hardware controlled scan. You can
scan channels on the SCXI-1127 in any order, except for the CJTEMP
channel that must be the first channel in the scan.
SCXI-1140
The SCXI-1140 is an 8-channel simultaneously sampling differential
amplifier module. The input voltage range of the module is −10 to +10 V.
It has a hardware-selectable gain on each input channel with values of 1,
10, 100, 200, and 500. The gain fields in Measurement & Automation
Explorer are not used by NI-DAQ; those fields are used only by LabVIEW.
You use the
SCXI_Scale function to compensate for SCXI-1140 gains.
The SCXI-1140 module supports both multiplexed mode and parallel
mode.
The SCXI-1140 simultaneously samples all the input signals and holds
those values while the DAQ device reads the desired channels one by one.
When the module is holding the input channel values, it is in hold mode;
when it comes out of hold mode so that it can sense the new values on the
input channels, it is in track mode. A control signal on the module
determines when the module is in track mode and when the module will go
into hold mode. This signal is derived either from a counter/timer output on
- 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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