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After firmware is installed, and after a call to hpe1432_preset, all of the
parameters (both channel-specific and global) in an HP E1433A module are
set to their default values. For channel-specific parameters, the default
value may depend on the type of channel. Some channel-specific
parameters apply only to a specific type of channel. For example, tach
holdoff applies only to tach channels. Setting such a parameter for a
channel that doesn’t make sense will result in an error.
At the start of a measurement, the HP E1433A firmware sets up all
hardware parameters, and ensures that the input hardware is settled before
starting to take data. The firmware also ensures that any digital filters have
time to settle. This ensures that all data read from the module will be valid.
However, after a measurement starts, HP E1433A parameters can still be
changed. The effect of this change varies, depending on the parameter.
For some parameters, changing the value aborts the measurement
immediately. For other parameters, the measurement is not aborted, but
the changed parameter value is saved and not used until a new
measurement is started. For still other parameters, the parameter change
takes place immediately, and the data coming from the module may contain
glitches or other effects from changing the parameter. See the chapter
titled “The C-Language Host Interface Library” for Parameter Lists showing
the effects for each parameter. Parameter names for the VXIplug&play
library are similar to those for the C-Language Host Interface Library.
You cannot tell the module to wait for settling when changing a parameter
in the middle of a measurement. The only way to wait for settling is to
stop and re-start the measurement. Also, you cannot disable the settling
that takes place at the start of a measurement.
Refer to the (on-line) HP E1433A Function Reference for the parameters
needed for each function. (See “Where to get more information” in this
chapter.)
HP E1433A User's Guide
Using the HP E1433A
3-35
- HP E1433A 1
- User’s Guide 1
- In This Book 3
- TABLE OF CONTENTS 5
- 3 Using the HP E1433A 6
- 5 Module Description 8
- 7 The Tachometer 9
- 8 Break Out Boxes 9
- Installing the HP E1433A 11
- To inspect the HP E1433A 12
- To install the HP E1433A 13
- To store the module 16
- To transport the module 17
- Getting Started With the 19
- 1 Log in as root 24
- 3 Type swinstall 24
- HP VEE example programs 28
- Figure 2-4: HP VEE help text 30
- Visual Basic example programs 37
- Using the HP E1433A 39
- What is VXIplug&play? 41
- A set of source (.C) files 42
- Header and Library Files 44
- Channels and groups 45
- Do not source CLK10 52
- 16 tim es 55
- All values in Hertz 56
- HP E1433 sample frequencies 60
- Measurement Process 61
- LHLHL HLH 62
- Arm Trigger MeasureIdle 63
- Level mode 67
- Bound mode 67
- Where to get more information 76
- The C-Language Host 77
- Interface Library 77
- Parameter Information 80
- Global Parameters 81
- Channel IDs 87
- Group IDs 88
- Block Mode (HP E1431A) 101
- Continuous Mode 101
- Overlap Block Mode 101
- Limit on Queuing of Data 102
- HP E1433A Interrupt Behavior 103
- HP E1433A Interrupt Handling 104
- Host Interrupt Setup 104
- Host Interrupt Handling 105
- Module Description 107
- Module Features 108
- Block Diagram 109
- HP E1433A User's Guide 109
- 8-CHANNEL 196 112
- Status LEDs 113
- SMB Connectors 113
- Input Connectors (1 or 2) 113
- VXI Backplane Connections 114
- Local Bus vs VME Transfers 115
- The HP E1433A VXI Device 116
- Sync/Trigger line 119
- Free-running clock line 119
- Input circuitry 121
- Front panel connector 121
- VXI SUMBUS 121
- The Arbitrary Source 123
- Option (1D4) 123
- Arbitrary Source Description 124
- The Arbitrary Source Option 125
- The Tachometer 129
- Option (AYF) 129
- Tachometer Description 130
- Break Out Boxes 135
- Introduction 136
- 8 CH INPUT 137
- Break Out Box Cables 139
- Allowed Connections 141
- Dis-allowed Connections 142
- Troubleshooting the 143
- Diagnostics 144
- Replacing Assemblies 147
- Replaceable Parts 148
- Mfr No. Mfr Name Address 149
- Assemblies: with option AYF 152
- Assemblies: with option 1D4 154
- To remove the top cover 160
- To remove the front panel 161
- Backdating 171
- Appendix A 173
- The HP E1433A VXI Registers 174
- are the values 179
- Reading 32-bit Registers 182
- Writing 32-bit Registers 182
- Controller Protocol Examples 184
- Write Command 184
- Read Response 184
- Wait for Done 185
- Complex Sequences 185
- Technical Specifications 189
- Specifications 190
- Option 1D4 Arbitary Source 194
- Summer Input 195
- Option AYF Tachometer Input 196
- VXI System Level 197
- 10 of 12 198
- 11 of 12 199
- Performance Benchmarks 200
- Local Bus Data Transfer Rate 200
- FIFO Memory 200
- Glossary 201
- VXIplug&play 207
- Need Assistance? 215
- Declaration of Conformity 217
- About this edition 219
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