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VMIC VMIVME-3126A-100
High Resolution Isolated A/D Converter Board
A l l t r a d e m a r k s , b r a n d n a m e s , a n d b r a n d s a p p e a r i n g h e r e i n a r e t h e p r o p e r t y o f t h e i r r e s p e c t i v e o w n e r s .
• C r i t i c a l a n d e x p e d i t e d s e r v i c e s
• I n s t o c k / R e a d y - t o - s h i p
Artisan Scientific Corporation dba Artisan Technology Group is not an affiliate, representative, or authorized distributor for any manufacturer listed herein.
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Table of Contents
Related Manuals for VMIC VMIVME-3136A
Summary of Contents for VMIC VMIVME-3136A
- Page 1 VMIC VMIVME-3126A-100 High Resolution Isolated A/D Converter Board In Stock Used and in Excellent Condition Open Web Page https://www.artisantg.com/60484-1 A l l t r a d e m a r k s , b r a n d n a m e s , a n d b r a n d s a p p e a r i n g h e r e i n a r e t h e p r o p e r t y o f t h e i r r e s p e c t i v e o w n e r s .
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Page 2: Product Manual
VMIVME-3136A High Resolution, Isolated Analog-to-Digital Converter Board Product Manual 12090 South Memorial Parkway Huntsville, Alabama 35803-3308, USA 500-103126-000 Rev. D (256) 880-0444 (800) 322-3616 Fax: (256) 882-0859 Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com... - Page 3 12090 South Memorial Parkway Huntsville, Alabama 35803-3308, USA (256) 880-0444 (800) 322-3616 Fax: (256) 882-0859 Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
- Page 4 VMIC reserves the right to make any changes, without notice, to this or any of VMIC’s products to improve reliability, performance, function, or design. VMIC does not assume any liability arising out of the application or use of any product or circuit described herein; nor does VMIC convey any license under its patent rights or the rights of others.
- Page 5 12090 South Memorial Parkway Huntsville, Alabama 35803-3308, USA (256) 880-0444 (800) 322-3616 Fax: (256) 882-0859 Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
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Page 6: Table Of Contents
Table of Contents List of Figures ..............9 List of Tables . - Page 7 VMIVME-3126A High Resolution, Isolated Analog-to-Digital Converter Board Analog Inputs..............29 Analog-to-Digital Converter (ADC) .
- Page 8 Table of Contents Maintenance ............... 1 Maintenance .
- Page 9 VMIVME-3126A High Resolution, Isolated Analog-to-Digital Converter Board Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
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Page 10: List Of Figures
List of Figures Figure 1-1 VMIVME-3126A High Resolution, Isolated Analog-to--Digital Converter Board’s Block Diagram 19 Figure 1-2 User’s Calibration Flowchart ..................... 24 Figure 1-3 Channel Reconfiguration Flowchart ..................25 Figure 2-1 Address Locations and Configuration ..................Figure 2-2 Access and Address Mode Configurations ................36 Figure 2-3 Location of User Configuration Jumpers ................... - Page 11 VMIVME-3126A High Resolution, Isolated Analog-to-Digital Converter Board Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
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Page 12: List Of Tables
List of Tables Table 1-1 Control and Status Registers ..............20 Table 2-1 P3 Connector Assignments . - Page 13 VMIVME-3126A High Resolution, Isolated Analog-to-Digital Converter Board Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
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Page 14: Overview
Overview Contents Related Documents ............14 Safety Summary . -
Page 15: Related Documents
EMAIL: info@vita.com For detailed information concerning the physical description and specifications of the VMIVME-3126A High Resolution, Isolated Analog-to-Digital Converter board, refer to VMIC’s Specification No. 800-103126-000. This document is availble from: VME Microsystems International Corporation 12090 South Memorial Parkway Huntsville, Alabama 35803-3308... -
Page 16: Safety Summary
Overview Safety Summary The following general safety precautions must be observed during all phases of the operation, service, and repair of this product. Failure to comply with these precautions or with specific warnings elsewhere in this manual violates safety standards of design, manufacture, and intended use of this product. VME Microsystems International Corporation assumes no liability for the customer's failure to comply with these requirements. -
Page 17: Safety Symbols Used In This Manual
VMIVME-3126A High Resolution, Isolated Analog-to-Digital Converter Board Safety Symbols Used in This Manual Indicates dangerous voltage (terminals fed from the interior by voltage exceeding 1000 V are so marked). Protective conductor terminal. For protection against electrical shock in case of a fault. -
Page 18: Chapter 1 - Theory Of Operation
CHAPTER Theory of Operation Contents VMEbus Interface ............. . . 18 Electrically Programmable Read-Only Memory (EPROM) . -
Page 19: Vmebus Interface
VMIVME-3126A High Resolution, Isolated Analog-to-Digital Converter Board VMEbus Interface The VMIVME-3126A High Resolution, Isolated Analog-to-Digital Converter board responds to word (D16) or byte (D08[EO]) data accesses. Nonprivileged, supervisory, or both access modes are supported along with short and standard address modes. Control and Status Registers (CSRs) The VMIVME-3126A contains several registers available to the user for control and status of the board. - Page 20 P3/P4 ONE OF 16 INDIVIDUAL CHANNELS SHOWN CH_GUARD +2.5 V REFERENCE CH_HIGH AUTO- ZERO SWITCH IN_HIGH CONTROL CH_LO IN_LO ISOLATED RTD 1 GROUND RTD 2 CH_RTD 1 RETURN DATA CH_RTD 2 CH_AGND ISOLATED GROUND +5 V REGULATOR -5 V REGULATOR ISOLATION BARRIER P1/P2...
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Page 21: Modes Of Operation
VMIVME-3126A High Resolution, Isolated Analog-to-Digital Converter Board Control and Status Registers Table 1-1 Register Mnemonic Description Board ID Register Contains code identifying the board as a VMIVME-3126A Board Ready Register Status indicating when the board can be accessed for read/write operations Board Control Register Control functions for board operation Select Channel Register... -
Page 22: Reconfiguration Mode
VMEbus Interface must enter the channels to calibrate into the SCR and the digital representation of the expected result of the calibration voltage into the TCVH and TCVL. The DSP uses these values in determining the gain and offset coefficients. The equation for determining the digital representation of the expected result is given in the Target Calibration Voltage Register (TVC) section on page 56. -
Page 23: Autozero Mode
VMIVME-3126A High Resolution, Isolated Analog-to-Digital Converter Board channels, the bit in the BCR will be cleared and written to the SYS RECONFIG $0000 BRR. When a VMEbus read indicates , the user knows the Reconfiguration Mode is $0000 complete and the board is accessible. Figure 1-3 on page 25 shows the reconfiguration flowchart from the user’s standpoint. -
Page 24: Digital Signal Processor (Dsp)
Digital Signal Processor (DSP) Digital Signal Processor (DSP) The DSP is responsible for gathering data from the ADC and providing offset and gain correction along with filtering. The DSP and the Erasable Programmable Logic Device (EPLD) combine to control all board operations. During calibration, the DSP collects up to seven different sets of data from user defined inputs. -
Page 25: Figure 1-2 User's Calibration Flowchart
VMIVME-3126A High Resolution, Isolated Analog-to-Digital Converter Board Configure to the desired range Connect calibration voltage source to input connectors Enter channels to be calibrated into SCR Set desired calibration voltage on source Enter the digital representation of the expected result of the calibration voltage into TCVH and TCVL Set INIT CAL bit in BCR Wait approximately 22 seconds... -
Page 26: Figure 1-3 Channel Reconfiguration Flowchart
Digital Signal Processor (DSP) Enter channels to be reconfigured into SCR Enter reconfigure code into each channel’s CSR which is enabled in the SCR Set SYS RECONFIG bit in the BCR Wait approximately 101 msec to complete reconfiguration Does BRR read $0000? Begin reading new data from RAM Figure 1-3 Channel Reconfiguration Flowchart... -
Page 27: Electrically Programmable Read-Only Memory (Eprom)
VMIVME-3126A High Resolution, Isolated Analog-to-Digital Converter Board Electrically Programmable Read-Only Memory (EPROM) The DSP firmware is stored in the EPROM. There are four main boot pages stored in the EPROM. These are the power-up/reset boot page, the main routine boot page, the calibration boot page, and the reconfiguration boot page. -
Page 28: Electrically Erasable Programmable Read-Only Memory (E2Prom)
Electrically Erasable Programmable Read-Only Memory (E2PROM) Electrically Erasable Programmable Read-Only Memory (E PROM) The gain and offset coefficients calculated in the Calibration Mode can be stored in the PROM. The board is shipped with factory determined coefficients. When the user initiates a calibration, newly calculated coefficients are stored in the DSP for use in real-time correction. -
Page 29: Control Logic
VMIVME-3126A High Resolution, Isolated Analog-to-Digital Converter Board Control Logic The control logic consists of the logic required to read and write the RAM and PROM, initiate ADC conversions, and arbitrate between the board and the VMEbus. The control logic consists of an EPLD. Artisan Technology Group - Quality Instrumentation ... -
Page 30: Analog Inputs
Analog Inputs Analog Inputs The VMIVME-3126A High Resolution, Isolated Analog-to-Digital Converter board can accept bipolar and unipolar signals in the ranges stated in the specification. To ensure accuracy and reduce noise, proper grounding techniques and the use of twisted shielded pair cable is strongly recommended for the low-level ranges. The inputs provide a high impedance in the power on or off condition. -
Page 31: Open Transducer Detection
VMIVME-3126A High Resolution, Isolated Analog-to-Digital Converter Board Open Transducer Detection The ADC supplies software controlled open transducer detection. Open transducer detection allows the user to check if an input transducer is still connected or an open condition has occurred. This function only works on ranges from ±1 V (0-to-1 V) to ±5 mV (0-to-5 mV). - Page 32 Analog Inputs Calibration for the current option is similar to regular calibration as described in the Calibration Mode section on page 20 and the Target Calibration Voltage Register (TVC) section, but with one difference. The value entered in the TCVH and TCVL must be expressed as a voltage.
- Page 33 VMIVME-3126A High Resolution, Isolated Analog-to-Digital Converter Board Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
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Page 34: Chapter 2 - Configuration And Installation
CHAPTER Configuration and Installation Contents Unpacking Procedures ........... 34 Unpacking Procedures . -
Page 35: Unpacking Procedures
All claims arising from shipping damage should be filed with the carrier and a complete report sent to VMIC together with a request for advice concerning the disposition of the damaged item(s). -
Page 36: Base Address Configuration
Base Address Configuration Base Address Configuration There are 20 jumper positions to establish the Base Address, Address Mode, and Access Mode. The Address Mode can be configured for standard or short address space. The Base Address is determined by the presence (address bit compared to logic zero [0]) or absence (address bit compared to logic one [1]) of a jumper shunt at each appropriate address jumper position. -
Page 37: Figure 2-2 Access And Address Mode Configurations
VMIVME-3126A High Resolution, Isolated Analog-to-Digital Converter Board ACCESS MODE CONFIGURATIONS ADDRESS MODE CONFIGURATIONS Supervisory Short I/O Addressing (A16) Either Supervisory or Nonprivileged Standard Addressing (A24) Nonprivileged Figure 2-2 Access and Address Mode Configurations Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com... -
Page 38: Figure 2-3 Location Of User Configuration Jumpers
Base Address Configuration Denotes Pin 1 (A23) Figure 2-3 Location of User Configuration Jumpers Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com... -
Page 39: Uioc Jumper
VMIVME-3126A High Resolution, Isolated Analog-to-Digital Converter Board UIOC Jumper The UIOC jumper alerts the DSP if the board is being used with VMIC’s I/O controllers. This jumper is labelled E10. If the jumper is installed, the DSP recognizes that the board is controlled by the I/O controller. It is the responsibility of the UIOC to extinguish the front panel LED. -
Page 40: System Connections
System Connections System Connections Table 2-1 on page 40 and Table 2-2 on page 41 list the P3 and P4 connector inputs. The connectors are shown in Figure 2-4 below. Each connector is a 64-pin DIN type connector, which contains eight analog inputs. P1 and P2 are 96-pin DIN connectors. Pin No.32 Pin No.1 PC BOARD... -
Page 41: Table
VMIVME-3126A High Resolution, Isolated Analog-to-Digital Converter Board Table 2-1 P3 Connector Assignments Pin No. Row A Row C Ch15_High RTD2_Ch15 Ch15_Guard RTD1_Ch15 Ch15_Low Ch15_AGND Ch7_High RTD2_Ch7 Ch7_Guard RTD1_Ch7 Ch7_Low Ch7_AGND Ch14_High RTD2_Ch14 Ch14_Guard RTD1_Ch14 Ch14_Low Ch14_AGND Ch6_High RTD2_Ch6 Ch6_Guard RTD1_Ch6 Ch6_Low Ch6_AGND Ch13_High... - Page 42 System Connections Table 2-2 P4 Connector Assignments Pin No. Row A Row C Ch11_High RTD2_Ch11 Ch11_Guard RTD1_Ch11 Ch11_Low Ch11_AGND Ch3_High RTD2_Ch3 Ch3_Guard RTD1_Ch3 Ch3_Low Ch3_AGND Ch10_ High RTD2_Ch10 Ch10_Guard RTD1_Ch10 Ch10_Low Ch10_AGND Ch2_High RTD2_Ch2 Ch2_Guard RTD1_Ch2 Ch2_Low Ch2_AGND Ch9_High RTD2_Ch9 Ch9_Guard RTD1_Ch9 Ch9_Low...
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Page 43: Figure 2-5 Differential Input Connection
VMIVME-3126A High Resolution, Isolated Analog-to-Digital Converter Board The inputs can be connected as differential or single-ended. In either case, the main pins to connect at the board are High, Low, and AGND. Below, Figure 2-5 and Figure 2-6 show examples for the connections for differential and single-ended inputs. Figure 2-5 Differential Input Connection Figure 2-6 Single-Ended Input Connection Artisan Technology Group - Quality Instrumentation ... -
Page 44: Calibration
Calibration Calibration Before delivery from the factory, the VMIVME-3126A High Resolution, Isolated Analog-to-Digital Converter board is fully calibrated for each range and conforms to all specifications. The calculated gain and offset coefficients are only as good as the source used for calibration. -
Page 45: Rtd Applications And Configurations
VMIVME-3126A High Resolution, Isolated Analog-to-Digital Converter Board RTD Applications and Configurations The two main configurations for RTDs are the three- and four-wire interfaces. Each of these configurations will be described, along with figures showing the necessary connections. Three-Wire RTD Configuration In the three-wire configuration, shown in Figure 2-7 below, lead resistances will result in errors in the measurement if only one of the RTD excitation currents is used. -
Page 46: Four-Wire Rtd Configuration
RTD Applications and Configurations Four-Wire RTD Configuration The RTD has to be connected to the board using wire. Almost certainly, there will be an impedance mismatch between the HIGH and LOW sides. This impedance mismatch can result in significant errors in the temperature measurement. The four- wire configuration, shown in Figure 2-8 below, eliminates any errors associated with lead resistances because no current flows in the measurement leads. - Page 47 VMIVME-3126A High Resolution, Isolated Analog-to-Digital Converter Board Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
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Page 48: Chapter 3 - Programming
CHAPTER Programming Contents General Control Features ..........48 Control Registers . -
Page 49: General Control Features
VMIVME-3126A High Resolution, Isolated Analog-to-Digital Converter Board General Control Features Addressing Modes and Board Locations Programmable address jumpers permit the VMIVME-3126A High Resolution, Isolated Analog-to-Digital Converter board to be located in either short I/O (A16) space or in standard (A24) space. The board can be located on any 256-byte boundary. -
Page 50: Control Registers
Control Registers Control Registers Register designations and location are summarized in Table 3-1 below. NOTE: Registers designated as read access should only be read. Do not write to read-only access registers. Table 3-1 VMIVME-3126A Board’s Register Map Register Address (HEX) Register Designation Abbrev Access... -
Page 51: Board Identification Register (Bir)
VMIVME-3126A High Resolution, Isolated Analog-to-Digital Converter Board Board Identification Register (BIR) The Board Identification Register is a fixed, read-only data register. The contents of this register identifies the VMIVME-3126A High Resolution, Isolated Analog-to-Digital Converter board. The Board ID for the VMIVME-3126A 16-channel option is , and $3B00 for the 8-channel option. -
Page 52: Board Ready Register (Brr)
Control Registers Board Ready Register (BRR) The Board Ready Register (BRR) tells the user when the board is able to be accessed from the VMEbus for read/write operations following a reset condition. Table 3-3 Board Ready Register’s Bit Map Board Ready Register (Offset $0002) Read Only, Byte/Word Bit 15 Bit 14 Bit 13... -
Page 53: Board Control Register (Bcr)
VMIVME-3126A High Resolution, Isolated Analog-to-Digital Converter Board Board Control Register (BCR) The Board Control Register (BCR) contains status and control of the board’s operations. The user can initiate channel reconfiguration, channel calibrations, autozeroing of channels, and a software reset. Table 3-5 Board Control Register’s Bit Map Board Control Register (Offset $0004) Read/Write, Byte/Word Bit 15 Bit 14... - Page 54 Control Registers Board Control Register Bit Definitions (Continued) Reset[A and B] - These bits cause the board to return to its Bits 08 and 07: powerup reset state. This reset is a two-step process to ensure fault tolerance. To initiate a proper reset, the following steps must be adhered to: 1.
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Page 55: Table 3-6 User Gain Coefficients Msw And Lsw
VMIVME-3126A High Resolution, Isolated Analog-to-Digital Converter Board Board Control Register Bit Definitions (Continued) Table 3-6 User Gain Coefficients MSW and LSW Address Word Channel $XXC0 $XXC2 $XXC4 $XXC6 Bit 03: SYS Reconfig - The user sets this bit to a logical one (1) whenever a change in channel configuration is desired (i.e., gain, frequency). -
Page 56: Select Channel Register (Scr)
Control Registers Select Channel Register (SCR) The Select Channel Register (SCR) selects the channels for calibration or reconfiguration. See Table 3-7 below for the Select Channel Register’s bit map. Table 3-7 Select Channel Register’s Bit Map Select Channel Register (Offset $0006) Read/Write, Byte/Word Bit 15 Bit 14 Bit 13... -
Page 57: Target Calibration Voltage Register (Tvc)
VMIVME-3126A High Resolution, Isolated Analog-to-Digital Converter Board Target Calibration Voltage Register (TVC) The Target Calibration Voltage (TCV) register consists of two registers. The user writes the digital value of the expected result for a given calibration input voltage. The Target Calibration Voltage HI Register contains the upper word of a 32-bit value. -
Page 58: Table 3-10 Target Calibration Voltage Register Lo's Bit Map
Control Registers Table 3-10 Target Calibration Voltage Register LO’s Bit Map Target Calibration Voltage Register LO (Offset $000C) Read/Write, Byte/Word Bit 15 Bit 14 Bit 13 Bit 12 Bit 11 Bit 10 Bit 09 Bit 08 TVL15 TVL14 TVL13 TVL12 TVL11 TVL10 TVL9... -
Page 59: Firmware Revision Register (Frr)
VMIVME-3126A High Resolution, Isolated Analog-to-Digital Converter Board Firmware Revision Register (FRR) The Firmware Revision Register (FRR) contains the revision of code for the DSP. Table 3-11 Firmware Revision Register’s Bit Map Firmware Revision Register (Offset $000E) Read Only, Byte/Word Bit 15 Bit 14 Bit 13 Bit 12... -
Page 60: Control And Status Register (Channel 0 Example)
Control Registers Table 3-13 EEPROM Writes Register 0’s Bit Map EEPROM Writes Register 0 (Offset $0012) Read Only, Byte/Word Bit 15 Bit 14 Bit 13 Bit 12 Bit 11 Bit 10 Bit 09 Bit 08 EW0_15 EW0_14 EW0_13 EW0_12 EW0_11 EW0_10 EW0_9 EW0_8... - Page 61 VMIVME-3126A High Resolution, Isolated Analog-to-Digital Converter Board Control and Status Register Bit Definitions (Continued) Open Sensor - This bit enables the Open Sensor detection on the Bit 13: inputs when set to a logical one (1). The default condition is a logic zero (0).
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Page 62: Offset Coefficients
Control Registers Table 3-16 Channel -3 dB Cutoff Frequency -3 dB Frequency 0.05 Hz 0.12 Hz 0.30 Hz 0.70 Hz 1.7 Hz 4.0 Hz 10.0 Hz *26.0 Hz *Denotes default setting. Offset Coefficients A copy of the offset coefficients determined during calibration are placed in locations . - Page 63 VMIVME-3126A High Resolution, Isolated Analog-to-Digital Converter Board Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
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Page 64: Maintenance
Maintenance Maintenance This section provides information relative to the care and maintenance of VMIC's products. If the products malfunction, verify the following: • Software • System configuration • Electrical connections • Jumper or configuration options • Boards are fully inserted into their proper connector location •... -
Page 65: Maintenance Prints
VMIVME-3126A High Resolution, Isolated Analog-to-Digital Converter Board Maintenance Prints User level repairs are not recommended. The drawings and diagrams in this manual are for reference purposes only. Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
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