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Glossary
VXI-MIO Series User Manual G-6
National Instruments Corporation
dual-access memory Memory that can be sequentially, but not simultaneously,
accessed by more than one controller or processor. Also known as
shared memory.
dual-ported memory Memory that can be simultaneously accessed by more than one
controller or processor.
dynamic configuration A method of automatically assigning logical addresses to VXIbus
devices at system startup or other configuration times. Each slot
can contain one or more devices. Different devices within a slot
can share address decoding hardware.
dynamically configured A device that has its logical address assigned by the Resource
device Manager. A VXI device initially responds at Logical Address 255
when its MODID line is asserted. The Resource Manager
subsequently assigns it a new logical address, which the device
responds to until powered down.
dynamic range The ratio of the largest signal level a circuit can handle to the
smallest signal level it can handle (usually taken to be the noise
level), normally expressed in dB.
E
ECL Emitter-Coupled Logic
EEPROM electrically erasable programmable read-only memory—ROM
that can be erased with an electrical signal and reprogrammed.
EISA Extended Industry Standard Architecture
embedded controller An intelligent CPU (controller) interface plugged directly into the
VXI backplane, giving it direct access to the VXIbus. It must have
all of its required VXI interface capabilities built in.
event Signals or interrupts generated by a device to notify another
device of an asynchronous event. The contents of events are
device-dependent.
external controller In this configuration, a plug-in interface board in a computer is
connected to the VXI mainframe via one or more VXIbus
extended controllers. The computer then exerts overall control
over VXIbus system operations.
external trigger A voltage pulse from an external source that triggers an event
such as A/D conversion.
EXTREF external reference signal
EXTSTROBE external strobe signal
- VXI-MIO Series 1
- User Manual 1
- Important Information 3
- Contents 4
- Table of Contents 5
- VXI-MIO Series User Manual vi 5
- Chapter 5 6
- Calibration 6
- VXI-MIO Series User Manual x 9
- Organization of This Manual 10
- About This Manual 11
- Related Documentation 13
- Introduction 14
- What You Need to Get Started 15
- Software Programming Choices 15
- NI-DAQ Driver Software 16
- Instrument Drivers 17
- Optional Equipment 18
- Custom Cabling 19
- Unpacking 19
- Configuration and 20
- Installation 20
- Figure 2-1 22
- Figure 2-2 23
- VXI-MIO-64XE-10 Block Diagram 23
- SIMM Size 24
- Table 2-1 26
- Hardware Installation 27
- Software Installation 28
- Hardware Overview 30
- Figure 3-1 31
- VXI-MIO Series Block Diagram 31
- Analog Input 32
- Table 3-2 33
- Table 3-3 35
- Figure 3-2 37
- Timing Signal Routing 44
- Programmable Function Inputs 45
- Module and Timebase 45
- VXIbus Triggers 46
- Signal Connections 47
- Figure 4-1 48
- Table 4-1 52
- Table 4-2 54
- Types of Signal Sources 57
- Input Configurations 58
- Figure 4-3 59
- Signal Sources 61
- Floating Signal Sources 62
- Figure 4-6 65
- Figure 4-7 66
- Figure 4-8 67
- Analog Output Connections 67
- Figure 4-9 68
- Digital I/O Connections 68
- Power Connections 69
- Timing Connections 69
- Figure 4-10 70
- Timing I/O Connections 70
- Figure 4-11 71
- SCANCLK Signal 72
- EXTSTROBE* Signal 72
- TRIG1 Signal 73
- TRIG2 Signal 74
- STARTSCAN Signal 76
- Figure 4-20 77
- CONVERT* Signal 78
- AIGATE Signal 79
- Figure 4-23 80
- SISOURCE Signal Timing 80
- UPDATE* Signal 82
- UISOURCE Signal 83
- GPCTR0_SOURCE Signal 84
- GPCTR0_GATE Signal 85
- GPCTR0_OUT Signal 86
- GPCTR0_UP_DOWN Signal 86
- GPCTR1_SOURCE Signal 87
- GPCTR1_GATE Signal 87
- GPCTR1_OUT Signal 88
- GPCTR1_UP_DOWN Signal 89
- FREQ_OUT Signal 90
- Field Wiring Considerations 91
- Self-Calibration 93
- External Calibration 93
- Other Considerations 94
- Specifications 95
- 100
- Digital I/O 101
- Timing I/O 101
- VXIbus Trigger 102
- Triggers 102
- Analog Trigger 102
- Digital Trigger 102
- Power Requirement 103
- Physical 103
- Environment 103
- VXI-MIO-64XE-10 104
- Transfer Characteristics 105
- Amplifier Characteristics 105
- Dynamic Characteristics 106
- Stability 106
- Analog Output 107
- Output Characteristics 107
- Voltage Output 107
- Optional Cable Connector 111
- Descriptions 111
- Figure B-1 112
- Common Questions 114
- Analog Input and Output 115
- Timing and Digital I/O 117
- Customer Communication 120
- Fax and Telephone Support 121
- Technical Support Form 122
- Configuration Form 123
- Documentation Comment Form 124
- Glossary 126
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