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Chapter 4 Signal Connections
National Instruments Corporation 4-9 VXI-MIO Series User Manual
Analog Input Signal Connections
The VXI-MIO-64E-1 and VXI-MIO-64XE-10 analog input signals
are ACH<0..63>, AISENSE, AISENSE2, and AIGND. The
ACH<0..63> signals are tied to the 64 analog input channels of
both modules. In single-ended mode, signals connected to
ACH<0..63> are routed to the positive input of both modules. In
differential mode, signals connected to ACH<0..7, 16..23, 32..39,
48..55> are routed to the positive input of the PGIA, and signals
connected to ACH<8..15, 24..31, 40..47, 56..63> are routed to the
negative input of the PGIA.
Warning:
Exceeding the differential and common-mode input ranges distorts your
input signals. Exceeding the maximum input voltage rating can damage
the VXI-MIO Series module and your VXIbus system. National
Instruments is
NOT
liable for any damages resulting from such signal
connections. The maximum input voltage ratings are listed in Tables 4-1
and 4-2 in the
Protection
column.
PFI5/UPDATE*
DIO — 5.5 V 3.5 at (4.6 V) 5 at 0.4 1.5 50 k
Ω
pu
PFI6/WFTRIG DIO — 5.5 V 3.5 at (4.6 V) 5 at 0.4 1.5 50 k
Ω
pu
PFI7/STARTSCAN DIO — 5.5 V 3.5 at (4.6 V) 5 at 0.4 1.5 50 k
Ω
pu
PFI8/GPCTR0_SOURCE DIO — 5.5 V 3.5 at (4.6 V) 5 at 0.4 1.5 50 k
Ω
pu
PFI9/GPCTR0_GATE DIO — 5.5 V 3.5 at (4.6 V) 5 at 0.4 1.5 50 k
Ω
pu
GPCTR0_OUT DO — — 3.5 at (4.6 V) 5 at 0.4 1.5 50 k
Ω
pu
FREQ_OUT DO — — 3.5 at (4.6 V) 5 at 0.4 1.5 50 k
Ω
pu
AI = Analog Input DIO = Digital Input/Output pu = pullup
AO = Analog Output DO = Digital Output
Note:
The tolerance on the 50 k
Ω
pullup and pulldown resistors is very large. Actual value may range between
17 and 100 k
Ω
.
Table 4-2.
VXI-MIO-64XE-10 I/O Signal Summary (Continued)
Signal Name
Drive Impedance
Input/
Output
Protection
(Volts)
Power On/Off
Source
(mA at V)
Sink
(mA at V)
Rise
Time
(ns)
Bias
- 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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