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VMIC VMIVME-3124-010 Product Manual

Analog input board
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VMIC VMIVME-3124-010
Scanning 12-Bit 32-Channel Analog-to-Digital
Converter (ADC) 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.
Limited Availability
Used and in Excellent Condition
Open Web Page
https://www.artisantg.com/71747-1
• We b u y y o u r e x c e s s , u n d e r u t i l i z e d , a n d i d l e e q u i p me n t
• F u l l - s e r v i c e , i n d e p e n d e n t r e p a i r c e n t e r

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Summary of Contents for VMIC VMIVME-3124-010

  • Page 1 VMIC VMIVME-3124-010 Scanning 12-Bit 32-Channel Analog-to-Digital Converter (ADC) Board Limited Availability Used and in Excellent Condition Open Web Page https://www.artisantg.com/71747-1 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 .
  • Page 2 VMIVME-3124 ANALOG INPUT BOARD PRODUCT MANUAL DOCUMENT NO. 500-003124-000 B Revised June 10, 1996 VME MICROSYSTEMS INTERNATIONAL CORPORATION 12090 SOUTH MEMORIAL PARKWAY HUNTSVILLE, ALABAMA 35803-3308 (205) 880-0444 (800) 322-3616 FAX NO. (205) 882-0859...
  • Page 3 VMIC assumes no responsibility resulting from omissions or errors in this manual, or from the use of information contained herein. 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.

  • Page 4: Record Of Revisions

    RECORD OF REVISIONS REVISION DATE PAGES INVOLVED CHANGE NUMBER LETTER 01/25/95 Release 95-0528 06/10/96 Cover, Pages ii, iii, 3-5, 4-4, 5-4, and 96-0409 REV LTR PAGE NO. VME MICROSYSTEMS INT’L CORP. 12090 South Memorial Parkway DOC. NO. 500-003124-000 Huntsville, AL 35803-3308• (205) 880-0444...

  • Page 5: Ground The System

    VMIC 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.

  • Page 6: Safety Symbols

    SAFETY SYMBOLS GENERAL DEFINITIONS OF SAFETY SYMBOLS USED IN THIS MANUAL Instruction manual symbol: the product is marked with this symbol when it is necessary for the user to refer to the instruction manual in order to protect against damage to the system. Indicates dangerous voltage (terminals fed from the interior by voltage exceeding 1000 volts are so marked).

  • Page 7: Table Of Contents

    500-003124-000 VMIVME-3124 ANALOG INPUT BOARD TABLE OF CONTENTS Page SECTION 1. INTRODUCTION FEATURES ..........1-1 SECTION 2.
  • Page 8 500-003124-000 TABLE OF CONTENTS (Concluded) SECTION 5. CONFIGURATION AND INSTALLATION (Concluded) Page 5.3.1 Board Address ......... . . 5-2 5.3.2 Address Modifier .

  • Page 9: Introduction

    500-003124-000 SECTION 1 INTRODUCTION FEATURES The VMIVME-3124 Analog Input board provides automatic scanning of 16 differential or 32 single-ended analog input channels. The channels are digitized with a 12-bit resolution Analog-to-Digital Converter (ADC). Each input is over-voltage protected and low-pass filtered. The board is very easy to use, no software setup is required.
  • Page 10 500-003124-000 The VMIVME-3124 occupies 128 bytes of short I/O VMEbus addressing space. Jumpers are provided to place the board on any 128-byte boundary. The board may also be jumper-programmed to respond to supervisory, nonprivileged, or both accesses. Conversion data is available from a 16-bit register (12-bit right justified with optional sign extension).

  • Page 11: Physical Description And Specifications

    500-003124-000 SECTION 2 PHYSICAL DESCRIPTION AND SPECIFICATIONS REFER TO 800-003124-000 SPECIFICATION...

  • Page 12: Theory Of Operation

    500-003124-000 SECTION 3 THEORY OF OPERATION INTRODUCTION The VMIVME-3124 is a flexible, low-cost analog input board that provides 16 differential or 32 single-ended analog input channels. The channels are scanned continuously at an tartrate rate of 40 kHz using a 12-bit resolution Analog-to-Digital Converter (ADC).

  • Page 13: Vmivme-3124 Functional Block Diagram

    500-003124-000 16-bit Register Sampling 12-bit ADC Buff 12-bit 40Hz Track & Hold 32X2 50kHz Gain Select Analog Inputs Dual-Port RAM 16/32 X100 Differential/ Two’s ADC Status Single-Ended Complement Mux Select ADC Control ADC Status VMEbus ADC/CSR/ ADC Control Foundation RAM Control Data Interface VMEbus...

  • Page 14: Analog-To-Digital Control And Timing

    500-003124-000 Data bus lines are bidirectional and move data to and from the board through a 16-bit data transceiver, responding to control signals from the control decoder. The data transceiver serves as a buffer for the internal data bus that interconnects all data devices on the board.

  • Page 15: Built-In-Test Reference

    500-003124-000 BUILT-IN-TEST REFERENCE The board is equipped with a programmable precision voltage reference which is used as a Built-In-Test (BIT) of the board. When selected, the BIT voltage is transferred through the Programmable Gain Amplifier (PGA) to the Analog-to-Digital Conversion (ADC), bypassing the external analog input on channel zero. Therefore, the channel zero location in the Dual-Port RAM is written with the BIT voltage’s equivalent digital value.

  • Page 16: Low-Pass Filters

    500-003124-000 3.6.1 Low Pass Filters The VMIVME-3124 provides passive single-pole low-pass input filters on all inputs. The normal -3 dB cut-off frequency is 50 kHz. This provides some high frequency noise protection for the board. The board may also be configured with an add on daughter board option.

  • Page 17: Channel Sequencer And Dual-Ported Ram Memory

    BOARD ID REGISTER The first location in the VMIVME-3124 register set is a read-only Board ID Register. It always reads $30. Other VMIC products have similar registers which read different constants. This allows general-purpose system software to automatically determine any installed boards.

  • Page 18: Programming

    500-003124-000 SECTION 4 PROGRAMMING MEMORY MAP The VMIVME-3124 occupies 128-bytes of addressing space including four information and control registers plus the conversion data registers. Tables 4.1-1 through 4.1-3 map this addressing space relative to the base address as set by configuration jumpers (see Section 5 for details concerning setting the base address and address modifier jumpers).
  • Page 19 500-003124-000 Table 4.1-2. VMIVME-3124 Memory Map: Differential Inputs, Maximum Buffer Offset Function Width Access Address Board ID Register byte read-only Configuration Register byte read-only Control/Status Register byte read/write Channel Pointer Register byte read-only $04-$3F Reserved Channel 0 Data word read/(write) Channel 1 Data word read/(write)
  • Page 20 500-003124-000 Table 4.1-3. VMIVME-3124 Memory Map: Single-Ended Inputs Offset Function Width Access Address Board ID Register byte read-only Configuration Register byte read-only Control/Status Register byte read/write Channel Pointer Register byte read-only $04-$3F Reserved Channel 0 Data word read/(write) Channel 1 Data word read/(write) Channel 2 Data...

  • Page 21: Register Descriptions

    Board ID Register The Board ID Register is an 8-bit read only register at offset $00 with a constant value set to $30 for the VMIVME-3124. This ID number uniquely identifies the board from other VMIC products. 4.2.2 Board Configuration Register The Configuration Register is an 8-bit read-only register at offset $01 that indicates the current configuration of the VMIVME-3124 board.

  • Page 22: Control/Status Register

    500-003124-000 4.2.3 Control/Status Register The Board Control/Status register is an 8-bit read/write register at offset $02 that allows software to control the VMIVME-3124 and also indicates its current status. Seven of the eight bits provide control and indication functions. Table 4.2.3-1 defines the contents of this register.

  • Page 23: Channel Pointer Register

    500-003124-000 The three Mode bits determine the stimulus to channel 0, according to Table 4.2.3-2. Table 4.2.3-2. Board Control/Status Register Modes Mode 2 Mode 1 Mode 0 Channel 0 Stimulus External Input (Default) Internal 0.000 V Reference Internal 9.915 mV Reference Internal 492.8 mV Reference Internal 4.980 V Reference The LED Off bit is self-explanatory.
  • Page 24 500-003124-000 recommended. When accessing the Data Registers as bytes, it is possible for the value in the Data Register to be updated between byte reads, potentially scrambling the data. Section 4.5 provides methods to avoid scrambled byte data reads. The data is a linear binary representation of the input voltage on the corresponding channel at the time of the most recent conversion.

  • Page 25: Built-In-Test Functions

    500-003124-000 By clearing the Max Buffer bit, only the first 16 Data Registers are updated. The updates correspond to channels 0-15 consecutively, beginning with channel 0 at offset $40. This is the simplest configuration, but it requires more bus overhead than desired if the user wishes to avoid constantly reading the board but still wants to capture every single data sample.

  • Page 26: Range And Gain Determination

    500-003124-000 Table 4.3-2. BIT Values for 5 V Range Gain Setting BIT Voltage X 10 X 100 0.000 V $0800 $0800 $0800 9.915 mV $0804 $0828 $0996 492.8 mV $08C9 $0FE2 $0FFF 4.980 V $0FF8 $0FFF $0FFF Table 4.3-3. BIT Values for 10 V Range Gain Setting BIT Voltage X 10...

  • Page 27: Current Inputs, -2Bc And -3Bc Options

    500-003124-000 Once scanning is halted, any Data Register may be safely read as bytes except for the Data Register pointed to by the Channel Pointer Register. Drawbacks to this method is that it is inherently slow and the programmer loses a regular time reference. The clock is stopped while the Halt bit is set (that is, the data is frozen for all channels except the one pointed to by the Channel Pointer Register, whose input gets converted constantly).

  • Page 28: Configuration And Installation

    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 29: Jumper Installations

    500-003124-000 JUMPER INSTALLATIONS Figure 5.3-1 identifies the location of configuration jumpers and calibration potentiometers for the VMIVME-3124. Jumpers E1 through E9 are address jumpers which must be set to the desired base address of the board as described in Section 5.3.1. Jumper E10 controls the VMEbus access mode, either supervisory or nonprivileged;...

  • Page 30: Address Modifier

    500-003124-000 Table 5.3.1-1. Address Selection Jumpers Jumper # Short I/O Address Bit (installed=0 removed=1) * installed for factory default address of $0000 To change the address, first determine the new address in hexadecimal (note that the address must be an even multiple of 128 decimal, or $80). Convert the address to binary and assign the address bits A0 through A15 to the binary address, starting from the least significant bit.

  • Page 31: Input Configuration

    500-003124-000 Table 5.3.2-1. Address Modifier Jumper Settings Short I/O Addressing Mode Jumper E10 Setting Supervisory 1&2 Nonprivileged 2&3 Both no jumper 5.3.3 Input Configuration Three jumpers (E14, E15, and E16) are used to configure the VMIVME-3124 for single-ended or differential inputs. Two jumpers (E19 and E20) control the input voltage range, and two jumpers (E18 and E17) control the amount of gain.

  • Page 32: Analog Input Connector Description

    500-003124-000 ANALOG INPUT CONNECTOR DESCRIPTION The 16 differential or 32 single-ended analog input connections to the VMIVME-3124 board are made using the front panel 37-pin D connector labelled P3. See Figure 5.4-1 and Table 5.4-1 below for connector pin and signal assignments. Table 5.4-1.

  • Page 33: Calibration Procedures

    To obtain the specified accuracy for analog measurements, the VMIVME-3124 must be calibrated for the range used. For greatest possible accuracy, VMIC recommends calibrating the board after it has been installed in its target chassis and after power has been applied for at least a half hour.

  • Page 34: Bipolar ±5 V Offset And Gain Calibration

    500-003124-000 d. Halt scanning on channel 0 and monitor channel 0 data. e. Adjust unipolar offset potentiometer R60 until channel 0 data fluctuates between $000 and $001. f. Connect precision voltage source to channel 0 input. g. Adjust precision voltage source to +9.996338 VDC. h.

  • Page 35: Built-In-Test Voltage Calibration

    500-003124-000 h. Change mode and gain jumpers as necessary for your final configuration. 5.5.6 Built In Test Voltage Calibration NOTE: Run this calibration procedure only after the instrumentation amp and appropriate offset and gain calibration procedures. a. Attach DVM positive to ADC input at TP1; attach negative to analog ground at TP2.

  • Page 36: Maintenance

    No components of adjacent boards are disturbed when inserting or removing the board from the chassis h. Quality of cables and I/O connections If products must be returned, contact VMIC for a Return Material Authorization (RMA) Number. This RMA Number must be obtained prior to any return.
  • Page 37 QUICK-R-NET VMEnet Soft Logic Link VMEnet II SRTbus VMEprobe TESTCAL WinUIOC “The Next Generation PLC” Registered Trademarks of VME Microsystems International Corporation: UIOC  (VMIC logo) ® (I/O man figure) Other registered trademarks are the property of their respective owners.
  • Page 38 APPENDIX A ASSEMBLY DRAWING, PARTS LIST, AND SCHEMATIC...

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