www.vtiinstruments.com
Preface
3
Driver for Linux OS ........................................................................................................................................... 34
C
OMPATIBILITY
...................................................................................................................................................... 35
Drivers, Instruments, and OS .............................................................................................................................. 35
Driver and Firmware Revisions .......................................................................................................................... 35
Driver API and Instruments ................................................................................................................................ 35
D
RIVER
S
TRUCTURE
............................................................................................................................................... 37
Measurement ...................................................................................................................................................... 37
Channels and Channel Groups ............................................................................................................................ 37
Start, Arm, Trigger, and Alarm........................................................................................................................... 38
Retrieving Data ................................................................................................................................................... 41
Reference Clock and Time Stamp ...................................................................................................................... 42
Self-Calibration .................................................................................................................................................. 42
LXI and LAN Events .......................................................................................................................................... 42
IVI Class Compliant Interfaces........................................................................................................................... 43
M
ULTIPLE
C
ARDS
,
S
EGMENTS
,
AND
C
HASSIS
......................................................................................................... 44
Initializing Driver with Multiple Cards .............................................................................................................. 44
Multiple Card Measurements / Coordination Line ............................................................................................. 44
Multiple Segment Measurement ......................................................................................................................... 45
Multiple Chassis Synchronization with Trigger Line ......................................................................................... 45
Multiple Chassis Synchronization with LAN Events ......................................................................................... 46
D
ATA
A
CQUISITION
................................................................................................................................................ 48
Data Flow ........................................................................................................................................................... 48
FIFO ................................................................................................................................................................... 48
Data Streaming ................................................................................................................................................... 49
Sampling Rates ................................................................................................................................................... 50
Overloads and Open Transducer Detection ........................................................................................................ 52
Time Stamp ........................................................................................................................................................ 52
Additional Data................................................................................................................................................... 53
M
EASUREMENT
P
ROCESS
....................................................................................................................................... 54
Measurement Setup ............................................................................................................................................ 54
Measurement Initiation ....................................................................................................................................... 54
Measurement Loop ............................................................................................................................................. 54
Arming ................................................................................................................................................................ 55
Triggering ........................................................................................................................................................... 55
Data Retrieval ..................................................................................................................................................... 56
Events ................................................................................................................................................................. 57
U
SING WITH
EMX-1434 ......................................................................................................................................... 58
Stimulus Signal Generation ................................................................................................................................ 58
Tachometer Inputs .............................................................................................................................................. 58
Digital Input and Output ..................................................................................................................................... 60
W
HERE TO
F
IND
M
ORE
I
NFORMATION
.................................................................................................................... 61
Driver API Reference ......................................................................................................................................... 61
Other Manuals .................................................................................................................................................... 61
Specification Information ................................................................................................................................... 61
SECTION
5 ............................................................................................................................................................... 62
D
IGITIZER
M
ODULE
D
ESCRIPTIONS
........................................................................................................................ 62
Overview ............................................................................................................................................................ 62
Digitizer Feature Comparison ............................................................................................................................. 62
Power Consumption ........................................................................................................................................... 62
Table 5.2: Power Consumption .......................................................................................................................... 63
Block Diagrams .................................................................................................................................................. 63
Input Types ......................................................................................................................................................... 64
Break out box Output ......................................................................................................................................... 68
Bridge Transducer .............................................................................................................................................. 69
AC Input Coupling ............................................................................................................................................. 69
IEPE Input Fault Detection ................................................................................................................................. 70
TEDS .................................................................................................................................................................. 70
