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User’s Guide
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OME-PCI-1002
PCI Data Acquisition Board
Hardware Manual
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® OMEGAnet Online Service Internet e-mail www.omega.com info@omega.com Servicing North America: USA: One Omega Drive, P.O. Box 4047 ISO 9001 Certified Stamford CT 06907-0047 TEL: (203) 359-1660 FAX: (203) 359-7700 e-mail: info@omega.com Canada: 976 Bergar Laval (Quebec) H7L 5A1, Canada TEL: (514) 856-6928 FAX: (514) 856-6886 e-mail: info@omega.ca For immediate technical or application assistance: ® USA and Canada: Sales Service: 1-800-826-6342 / 1-800-TC-OMEGA ® Customer Service: 1-800-622-2378
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Table of Contents 1. INTRODUCTION................................................................................................................................. 5 1.1 GENERAL DESCRIPTION ............................................................................................................ 5 1.2 THE BLOCK DIAGRAMS................................................................................................................. 6 1.3 FEATURES ........................................
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4.2 THE 8254 TIMER ........................................................................................................................36 4.3 THE A/D TRIGGER.....................................................................................................................36 4.4 A/D CONVERSION .......................................................................................................................38 4.4.1 A/D Conversion Trigger Modes.....................................
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1. Introduction The OME-PCI-1002H/L card provides 12-bit ADC and two 16-bit digital I/O ports. 1.1 General Description The OME-PCI-1002L and OME-PCI-1002H are high performance multifunction cards, with A/D and digital I/O for PC and compatible computers in a 5V PCI slot. This family has the following features: one 12-bit 110K A/D converter, 16 channels D/I, 16 channels D/O, programmable interrupt source and true “Plug and Play” support. The OME-PCI-1002H/L provides
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1.2 Block Diagram X86 System EPROM PCI Interface System Status Local System Controller Control Interrupt Digital Inputs 16 bits DI 16 bits DO Digital Outputs Pacer 4MHz Generator A/D control logic A/D 12-bit A/D Gain Mux Data Converter Analog Inputs Buffer Figure 1-1. The OME-PCI-1002 series block diagram. 6 PCI BUS
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1.3 Features • Bus: 5V PCI (Peripherals Component Interface) bus. 1. A/D: • One A/D converter with maximum 110K samples/second. • 32 single-ended / 16 differential programmable inputs for OME-PCI-1002L/H. • Three different A/D trigger methods. • Three different external trigger methods. • Programmable gain control, programmable offset control. 2. DIO: • 16 digital inputs and 16 digital outputs (TTL compatible). • High-speed data transfer rate: 2.7M word/sec (non-burst m
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1.4 Specifications 1.4.1 Power Consumption • +5V @ 960mA maximum, OME-PCI-1002L/H • Operating temperature : 0 °C to +70 °C 1.4.2 Analog Inputs • Channels: ( software programmable ) • 32 single-ended inputs/16 differential inputs, jumper selectable. • Gain control : ( software programmable ) OME-PCI-1002H, Gains - 1, 10, 100, 1000. OME-PCI-1002L, Gains - 1, 2, 4, 8. • Input signal range : OME-PCI-1002L: Bipolar Range: ±10, ±5V, ±2.5V, ±1.25V OME-PCI-1002H: Bipolar
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1.4.3 D/I and D/O • Channels: 16 channels DI, 16 channels DO • DO: Digital output port Output level: TTL compatible Output current: I = 0.5mA, I = 8mA oh ol • DI: Digital input port Input level: TTL compatible Input current: 50uA (max) 1.4.4 A/D Trigger Methods • Trigger-methods : 1. Software trigger 2. Pacer trigger: 16-bit programmable timer/counter 3. External trigger: Pre-trigger, Post-trigger, external Pacer trigger Pacer or software trigger External trigger
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1.4.5 Interrupt Channel • Interrupt: INTA (Automatically assigned by PCI-controller). • Enable/Disable: Via PCI control register and add-on control register. • Interrupt source: (Selected by on-board control register) 1. A/D conversion interrupt 2. Pacer 0 interrupt (Timer 0) 3. Pacer 1 interrupt (Timer 1) 4. External interrupt 2. 1. Falling edge of Pacer 0 End of Conversion Pacer 0 A/D busy IRQ IRQ Falling edge of 3. 4. Falling edge of Pacer 1 External tri
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1.5 Applications Signal analysis. FFT & frequency analysis. Transient analysis. Speech analysis. Temperature monitor. Vibration analysis. Energy management. Industrial and laboratory measurement and control. Process Control Signal Analysis Multi-I/O signals Transition Temperature OME-PCI-1002 Speech Analysis Frequency series Vibration Other Laboratory PCI interface use Process Monitor Single-task or multitask Figure 1-4. OM
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1.6 Product Check List In addition to this manual, the package includes the following items: • One OME-PCI-1002 card • One CD-ROM Release Notes The release notes contain the latest information updates. We strongly suggest that you read them first. 12
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VR2 VR3 VR1 JP1 OME-PCI-1002L 2. Hardware Configuration 2.1 Board Layout CON3 CON1 CON2 Figure 2-1. OME-PCI-1002 board layout. 13
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2.2 Jumper Setting There is only one jumper on the OME-PCI-1002. JP1 is used to select the analog input type. For single-ended inputs, users should connected pin 1, 3 and pin 2, 4. For differential inputs, Pin 3, 5 and Pin 4, 6 should be connected. JP1 JP1 1 2 2 1 5 6 6 5 Differential Single-ended Inputs Inputs (Default) 2.3 A/D Calibration • A/D Calibration for OME-PCI-1002 card Step 1: Apply +10V to channel 0. Step 2: Apply +0V to c
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2.4 System Block Diagram D/I 8254 Timer D/O A/D Buffer Data A/D A/D Adr Interrupt Trigger PCI Converter controller Logic Interface Controller Dispatch Multiplexers, controller Gain Amp. NVRA Scale Adj. External Trigger PCI BUS Figure 2-2. OME-PCI-1002 System Function Block. 15
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2.5 Daughter Boards 2.5.1 OME-DB-1825 The OME-DB-1825 is a daughter board designed for 32-channel AD cards such as the OME-PCI-1002. Refer to the OME-DB-1825 user manual for details. 37pin cable 2.5.2 OME-DB-8225 The OME-DB-8225 provides a on-board CJC (Cold Junction Compensation) circuit for thermocouple measurement and a terminal block for easy signal connection. The CJC is connected to A/D channel_0. The OME-PCI-1002 can connect CON3 direct to the OME-DB-8225 through
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2.5.5 OME-DB-16P Isolated Input Board The OME-DB-16P is a 16-channel isolated digital input daughter board. The optically isolated inputs of the OME-DB-16P consist of a bi-directional optocoupler with a resistor for current sensing. You can use the OME-DB-16P to sense DC signal from TTL levels up to 24V or use the OME-DB-16P to sense a wide range of AC signals. You can use this board to isolate the computer from large common-mode voltage, ground loops and transient voltage spike that
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2.5.6 OME-DB-16R Relay Board The OME-DB-16R, 16-channel relay output board consists of 16 form C relays that can be switched under program control. Applying 5 volts to the appropriate relay channel through the 20-pin flat connector can energize the relays. Each relay has its own LED that will light when the relay is energized. To avoid overloading your PC’s power supply, the board provides screw terminals for external power. Note: Channel: 16 Form C Relay
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2.6 Analog Input Signal Connection The OME-PCI-1002 can measure signals in the single-ended or differential mode. In the differential mode each channel has a unique signal HIGH and signal LOW connection. In the single-ended mode all channels have a unique signal HIGH connection but share a common LOW or ground connection. Differential connections are very useful for low level signals (millivolt), since they better reject electrical noise that can affect the quality of the measurem
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Figure 2-3A If the source is grounded, a second ground connection on the card could result in a ground loop. Figure 2-3B 20
