Trigger Delay = | VXI SVM2608 manual

0xFFFFE

0xFFFFC

0x00004

0x00002

0x00000

0xFFFFE

0xFFFFC

0x00004

0x00002

0x00000

Trigger Delay = 0

Trigger Sample - 1

Trigger Sample - 2

Trigger Sample - n

Trigger Sample + m

Trigger Sample + 2

Trigger Sample + 1

Trigger Sample

Trigger Delay … 0

Trigger Sample + n

Trigger Sample + 1

Trigger Sample

Post Delay Data + m

Post Delay Data + 2

Post Delay Data + 1

Post Delay Data

VXI Technology, Inc.

PRE-TRIGGER DATA

n = # of Pre-Trigger Points

POST-TRIGGER DATA

m = Sample Size - (n - 1)

TRIGGER DELAY DATA

n = # of Pre-Trigger Points

PRE-TRIGGER DATA

POST-DELAY DATA

FIGURE 3-1: MEMORY MAP

40	SVM2608 Programming

Image 40

VXI SVM2608 user manual Trigger Delay =

Contents

SVM2608 VXI Technology, Inc Table of Contents Self Test Command Warranty Limitation of WarrantyCertification Restricted Rights Legend EMC Steve Mauga, QA Manager Service should only be performed by qualified personnel Terms and SymbolsUse Proper Power Cord Use Proper Power Source Avoid Electric Shock Ground the ProductOperating Conditions Improper Use VXI Technology World Headquarters VXI Technology Cleveland Instrument DivisionVXI Technology Lake Stevens Instrument Division Technical Support VXI Technology, Inc SVM2608 Preface Introduction Overview Scale Acquiring Data Triggering Delayed Trigger Linear ModePre-Trigger Fifo Mode CommandsCalibrations Test Bus Option SVM2608 Block Diagram SVM2608 Environmental Specifications Physical Description Front Panel Interface Wiring GND CH1I CH3IGND CH1I+ GND CH3I+ Exttrigin CH0I CH2I SVM2608 Specifications Mtbf Option 1 SVM2608-01 VXI Technology, Inc SVM2608 Introduction Calculating System Power and Cooling Requirements Setting the Chassis Backplane Jumpers Setting the Base Address Rotary Switch Locations Divide Decimal ExampleMSB LSB Switch to C and the front switch to Module INSTALLATION/REMOVAL Device Memory Maps Function OffsetReserved Register Offset SVM2608 A32 Register MAP MS = Most Significant LS = Least Significant 0x72 Command Register Channel 0x74 Databyte Ordering Determining the Register Address Description of Registers Accessing the RegistersSysfailctl Force Trigger, Start Register 0x02 Read & Write INTLVL2HSTRIGSRC2 EXT Trig Slope Reserved TimeoutctlExternal Trigger Level 0x06 Read & Write 2WIREOHMS 4WIREOHMSLINEAR/FIFO ATTN-GAIN1-GAIN0 Sample Rate 0x0E, 0x36, 0x5E, 0x86 Read & Write Sample Rate 0x0C, 0x34, 0x5C, 0x84 Read & WriteKHz Channels 0-3/5 MHz Channels 4-5 LPF Control This bit Sample Rate, High-Speed 0xAC, 0xD4 Read & Write Sample Rate, High-Speed 0xAE, 0xD6 Read & Write Timeout 0x1C, 0x44, 0x6C, 0x94, 0xBC, 0xE4 Read & Write Fifo Data 0x26, 0x4E, 0x76, 0x9E, 0xC6, 0xEE Read Only Fifo Data 0x24, 0x4C, 0x74, 0x9C, 0xC4, 0xEC Read OnlyReserved Registers 0xF8 0xFC Trigger Delay = Microprocessor Commands Measurement Commands Captured Data Calculations Resistance Measurement Offset Method Self Test CommandResistance Measurement Dynamic Method Preset Setting Measurement Commands Example Calibration Commands Sample PointsSample Rate Trigger Event Forced TriggerPage Error Processing There are no errors in the queue Diagnostic Commands Changes become effective the next time the module powers up Example 2 Setting Channel 2 to Acquire 200,000 Samples Examples Example 3 Setting Channel 2 to Pre-acquire 100,000 Samples Timeout Counter = Timeout / Timeout Base Clock Timeout Register = Timeout Base * 213 + Timeout Counter VXI Technology, Inc SVM2608 Programming Appendix a Data Swapping Example VXI Technology, Inc SVM2608 Appendix a Index