National-instruments PCI-6023E User Manual Page 37
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Chapter 4 Signal Connections
PCI-6023E/6024E/6025E User Manual 4-8
©
National Instruments Corporation
Analog Input Signal Overview
The analog input signals for these boards are ACH<0..15>, ASENSE, and
AIGND. Connection of these analog input signals to your board depends
on the type of input signal source and the configuration of the analog input
channels you are using. This section provides an overview of the different
types of signal sources and analog input configuration modes. More
specific signal connection information is provided in the section, Analog
Input Signal Connections.
Types of Signal Sources
When configuring the input channels and making signal connections,
you must first determine whether the signal sources are floating or
ground-referenced.
PFI3/GPCTR1_SOURCE DIO — V
cc
+0.5 3.5 at (V
cc
-0.4) 5 at 0.4 1.5 50 k
Ω
pu
PFI4/GPCTR1_GATE DIO — V
cc
+0.5 3.5 at (V
cc
-0.4) 5 at 0.4 1.5 50 k
Ω
pu
GPCTR1_OUT DO — — 3.5 at (V
cc
-0.4) 5 at 0.4 1.5 50 k
Ω
pu
PFI5/UPDATE* DIO — V
cc
+0.5 3.5 at (V
cc
-0.4) 5 at 0.4 1.5 50 k
Ω
pu
PFI6/WFTRIG DIO — V
cc
+0.5 3.5 at (V
cc
-0.4) 5 at 0.4 1.5 50 k
Ω
pu
PFI7/STARTSCAN DIO — V
cc
+0.5 3.5 at (V
cc
-0.4) 5 at 0.4 1.5 50 k
Ω
pu
PFI8/GPCTR0_SOURCE DIO — V
cc
+0.5 3.5 at (V
cc
-0.4) 5 at 0.4 1.5 50 k
Ω
pu
PFI9/GPCTR0_GATE DIO — V
cc
+0.5 3.5 at (V
cc
-0.4) 5 at 0.4 1.5 50 k
Ω
pu
GPCTR0_OUT DO — — 3.5 at (V
cc
-0.4) 5 at 0.4 1.5 50 k
Ω
pu
FREQ_OUT DO — — 3.5 at (V
cc
-0.4) 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 k
Ω
and
100 k
Ω
.
Table 4-2.
I/O Signal Summary (Continued)
Signal Name
Signal
Type and
Direction
Impedance
Input/
Output
Protection
(Volts)
On/Off
Source
(mA at V)
Sink
(mA
at V)
Rise
Time
(ns)
Bias
PCI.book Page 8 Wednesday, September 16, 1998 9:09 AM
- PCI-6023E/6024E/6025E 1
- User Manual 1
- Important Information 3
- Contents 4
- Chapter 4 5
- About This Manual 10
- Related Documentation 12
- Introduction 13
- What You Need to Get Started 14
- Unpacking 14
- Software Programming Choices 15
- Chapter 1 Introduction 16
- Register-Level Programming 17
- Optional Equipment 18
- Software Installation 19
- Hardware Configuration 19
- Hardware Installation 20
- I/O Connector 21
- PCI Connector 21
- Analog Input 22
- Table 3-2 23
- Measurement Precision 23
- Chapter 3 Hardware Overview 24
- Analog Output 25
- Digital I/O 26
- Timing Signal Routing 26
- Programmable Function Inputs 27
- Board and RTSI Clocks 28
- RTSI Triggers 28
- Signal Connections 30
- Chapter 4 Signal Connections 31
- PCI-6024E, and PCI-6025E 33
- Analog Input Signal Overview 37
- Floating Signal Sources 38
- Analog Input Modes 38
- Signal Sources 43
- Sources (RSE Configuration) 47
- Sources (NRSE Configuration) 47
- Figure 4-9 49
- Analog Output Connections 49
- All Boards 50
- PCI-6025E Only 51
- Port C Pin Assignments 52
- Digital I/O Power-up State 53
- Timing Specifications 54
- Mode 1 Input Timing 56
- Mode 1 Output Timing 57
- Mode 2 Bidirectional Timing 58
- Power Connections 59
- Timing Connections 59
- DAQ Timing Connections 61
- SCANCLK Signal 62
- EXTSTROBE* Signal 62
- TRIG1 Signal 63
- = 50-100 ns 64
- STARTSCAN Signal 65
- = 10 ns minimum 67
- = 50-150 ns 68
- SISOURCE Signal 69
- WFTRIG Signal 69
- UPDATE* Signal 70
- UISOURCE Signal 71
- GPCTR0_SOURCE Signal 72
- GPCTR0_GATE Signal 73
- GPCTR1_SOURCE Signal 75
- GPCTR1_GATE Signal 75
- Field Wiring Considerations 78
- Calibration 80
- Self-Calibration 81
- External Calibration 81
- Other Considerations 82
- Specifications 83
- Accuracy Information 84
- Transfer Characteristics 85
- Amplifier Characteristics 85
- Dynamic Characteristics 86
- Stability 86
- Output Characteristics 86
- Voltage Output 88
- DIO<0..7> 89
- Timing I/O 90
- Triggers 90
- Digital Trigger 90
- Appendix A Specifications 91
- Custom Cabling and Optional 92
- Connectors 92
- Optional Connectors 93
- Common Questions 98
- Analog Input and Output 99
- Timing and Digital I/O 100
- Appendix C Common Questions 101
- Customer Communication 103
- Telephone and Fax Support 104
- Technical Support Form 105
- Configuration Form 106
- Documentation Comment Form 107
- Glossary 108
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