VXI SVM2608 user manual Setting the Base Address, Rotary Switch Locations

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VXI Technology, Inc.

SETTING THE BASE ADDRESS

The base address of the SVM2608 is determined by using the offset value (OV), set by two rotary switches located on the top edge of the interface card (Figure 2-1), and multiplying it by 224 (or 16,777,216) to get the base address in A32 address space. The switches are labeled with positions 0 through F. The switch located at S3 corresponds to the Most Significant Bit (MSB) and S2 corresponds to the Least Significant Bit (LSB). (Note, S1 is not used in the determination of the base address.) To set the OV to 25, first convert the decimal number to the hexadecimal value of 0x19. Next, set switch S3 to 1, and then set switch S2 to 9. See Figure 2-2.Two conversion examples are provided on the following pages.

S1

S2

S3

FIGURE 2-1: ROTARY SWITCH LOCATIONS

24	SVM2608 Preparation for Use

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Contents SVM2608 VXI Technology, Inc Table of Contents Self Test Command Warranty Limitation of WarrantyCertification Restricted Rights LegendEMC Steve Mauga, QA ManagerService should only be performed by qualified personnel Terms and SymbolsUse Proper Power Cord Use Proper Power SourceAvoid Electric Shock Ground the ProductOperating Conditions Improper UseVXI Technology World Headquarters VXI Technology Cleveland Instrument DivisionVXI Technology Lake Stevens Instrument Division Technical SupportVXI Technology, Inc SVM2608 Preface Introduction OverviewScale Acquiring Data TriggeringLinear Mode Delayed TriggerPre-Trigger Fifo Mode CommandsCalibrations Test BusOption SVM2608 Block Diagram SVM2608 Environmental Specifications Physical DescriptionFront Panel Interface Wiring GND CH1I CH3IGND CH1I+ GND CH3I+ Exttrigin CH0I CH2ISVM2608 Specifications MtbfOption 1 SVM2608-01 VXI Technology, Inc SVM2608 Introduction Calculating System Power and Cooling Requirements Setting the Chassis Backplane JumpersSetting the Base Address Rotary Switch LocationsExample Divide DecimalMSB LSB Switch to C and the front switch to Module INSTALLATION/REMOVALDevice Memory Maps Function OffsetReserved Register OffsetSVM2608 A32 Register MAP MS = Most Significant LS = Least Significant0x72 Command Register Channel 0x74 Databyte Ordering Determining the Register Address Accessing the Registers Description of RegistersSysfailctl Force Trigger, Start Register 0x02 Read & Write INTLVL2HSTRIGSRC2 EXT Trig SlopeTimeoutctl ReservedExternal Trigger Level 0x06 Read & Write 2WIREOHMS 4WIREOHMSLINEAR/FIFO ATTN-GAIN1-GAIN0Sample Rate 0x0C, 0x34, 0x5C, 0x84 Read & Write Sample Rate 0x0E, 0x36, 0x5E, 0x86 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 & WriteTimeout 0x1C, 0x44, 0x6C, 0x94, 0xBC, 0xE4 Read & Write Fifo Data 0x24, 0x4C, 0x74, 0x9C, 0xC4, 0xEC Read Only Fifo Data 0x26, 0x4E, 0x76, 0x9E, 0xC6, 0xEE Read OnlyReserved Registers 0xF8 0xFC Trigger Delay = Microprocessor Commands Measurement CommandsCaptured Data Calculations Self Test Command Resistance Measurement Offset MethodResistance Measurement Dynamic Method Preset Setting Measurement Commands ExampleCalibration 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 ExamplesExample 3 Setting Channel 2 to Pre-acquire 100,000 Samples Timeout Counter = Timeout / Timeout Base Clock Timeout Register = Timeout Base * 213 + Timeout CounterVXI Technology, Inc SVM2608 Programming Appendix a Data Swapping ExampleVXI Technology, Inc SVM2608 Appendix a Index