PMC-16AICS32 32-CHANNEL 16-BIT TRANSDUCER INPUT PMC With Scanning Input Current Source Features Include: • 32 Differential or 64 Single-Ended 16-Bit Scanned Analog Voltage Input Channels • 32-Channel Precision Scanning Excitation Current Source; 0.4ma to 10ma Options • Input Ranges Selectable as ±10V, ±5V or ±2.5V • Excitation Applied to any Channel Combination Under a Control Mask • High Input Impedance for Channels Not Requiring Excitation • Scan Rate Internally Adjustable from 0.06 to 3000 32-Channel Scans per Second • External Hardware Sync Input/Output (Alternate Function for Channel 31) • Data Buffered through a 64K-sample FIFO • Continuous and Burst (One-Shot) Input Modes • Scan Sizes from Two to 32 Channels-per-Scan; or Single-Channel sampling of any Channel • On-Demand Internal Autocalibration • DMA Engine Supports Block Mode Transfers • Completely Software-Configurable; No Field Jumpers • Single-width PMC Form Factor with EMI Shield and Panel Bezel Applications Include: � Resistance Transducers � Voltage Inputs � Temperature Measurement � Data Acquisition Systems � Process Monitoring � Environmental Test Systems Rev: 060804 8302A Whitesburg Drive · Huntsville, AL 35802 Phone: (256) 880-8787 or (800) 653-9970 FAX: (256) 880-8788 Functional Description: The PMC-16AICS32 board is a scanning 16-Bit analog digitizer that provides voltage measurement for up to 64 input channels, with precision current excitation available for 32 channels. A precision current source is switched synchronously with the input scanner to supply excitation for each channel as it is sampled. The excitation current can be programmed to occur in any combination of input channels, and those channels programmed not to receive the excitation can be used as basic analog voltage inputs. Input ranges are selectable as ±2.5V, ±5V or ±10V, and factory-configured excitation current is available from 0.4ma to 10ma. 16-bit sampled data is available to the PCI bus through a 64K-Sample FIFO buffer. All operational parameters are software configurable. The analog inputs can be sampled in scans of 2, 4, 8, 16 or 32 differential channels, or 2, 4, 8, 16, 32 or 64 single-ended channels, or any individual channel can be selected for sampling. The scan rate can be controlled internally from 0.06 scans per second up to 50,000 scans per second for a 2-channel scan, or any single channel can be sampled at up to 100,000 samples per second. A Sync input/output signal can replace Channel 31 inputs to permit multiple boards to operate from a common scan-rate generator. An internal auto calibration utility uses hardware D/A converters to correct for offset and gain errors in the input signal path, and calibrates the inputs, but not the excitation source, to a precision internal calibration reference. Input Conn Input 32 Differential Analog Configuration 16-Bit ADC Multiplexer Analog Inputs Switching Calibration Offset/Gain Reference Calibration DAC’S Excitation Excitation Current Switches Source Ext Sync (Chan 31) Host Conn PCI Interface Adapter Data Buffer Regulated PCI Bus +5VDC Power Internal Conversion Voltages Figure 1. PMC-16AICS32; Functional Organization This product is functionally compatible with the IEEE PCI local bus specification Revision 2.3, and supports the "plug-n-play" initialization concept. System connections are made at the front panel through a high- density 68-pin connector. Power requirements consist of +5 VDC, in compliance with the PCI specification, and operation over the specified temperature range is achieved with conventional convection cooling. 8302A Whitesburg Drive · Huntsville, AL 35802 Phone: (256) 880-8787 or (800) 653-9970 FAX: (256) 880-8788 ELECTRICAL SPECIFICATIONS O At +25 C, with specified operating conditions � Input Characteristics: Configuration: 32 differential or 64 single-ended analog voltage input channels, 32 of which support current excitation for resistance transducers. Voltage Ranges: Software configurable as ±10 Volts, ±5 Volts or ±2.5 Volts. Input Impedance: 20 Megohms input to return, typical at 100 Hz scan rate. Typically 10 Megohms at 1000 Hz scan rate. Common Mode Rejection: 60 dB typical, DC-60 Hz (Differential inputs) Common Mode Range: Same as selected voltage range, with zero normal mode signal (Diff inputs) Crosstalk Rejection: 85dB channel-to-channel, typical, DC-1.0 kHz, 0-1000 scans per second Overvoltage Protection: ±25 Volts with power applied *; ±40 Volts with power removed. * Channel 31 HI/LO pins are limited to -0.5 to +7.0 Volts when software-configured as alternate TTL Sync-I/O function. � Transfer Characteristics: Resolution: 16 Bits (0.0015 percent of FSR) Maximum Sample Rate: 100K samples per second Maximum Scan Rate: 100K scans per second, divided by number of channels in scan Channels per scan: 2, 4, 8, 16, 32 differential channels, or 2, 4, 8, 16, 32, 64 single-ended channels, or any single differential or single-ended channel. DC Accuracy: Range Midscale Accuracy ±Fullscale Accuracy (Maximum composite ±10V ± 3mv ± 4mv error after autocalibration) ±5V ± 2mv ± 3mv ±2.5V ± 1mv ± 2mv Integral Nonlinearity: ±0.007 percent of FSR, typical � Excitation Current Source: Current: 1.000 milliamp source. Optional 0.400, 2, 3, 5 or 10 milliamps. Accuracy: ±0.04 percent maximum Compliance: ±10 Volts to 3ma; ±8V to 10ma Impedance: 50 Megohms minimum to 3ma; 20 Megohms to 10ma Application: All HI inputs in differential mode; all even-numbered single-ended inputs. � Analog Input Operating Modes and Controls Input Data Buffer: 64K-sample FIFO Analog Input Modes: Continuous Scan: Selected analog inputs are scanned continuously at a rate determined by the internal rate generator. Single Scan: Each scan is initiated either by a software command or by a hardware TTL input. Single Channel: Any single selected channel is sampled continuously Selftest: Autocalibration and Selftest modes 8302A Whitesburg Drive · Huntsville, AL 35802 Phone: (256) 880-8787 or (800) 653-9970 FAX: (256) 880-8788 Rate Generator: Programmable from 0.06 - 100,000 conversions per second. External triggering is available through Channel 31 pins. Input Data Format: Selectable as offset binary or as two's complement PCI INTERFACE � Compatibility: Conforms to PCI Specification 2.3; D32; 33MHz; 3.3V,5V signaling. Supports "plug-n-play" initialization. Single multifunction interrupt. Supports block mode DMA transfers as bus master. MECHANICAL AND ENVIRONMENTAL SPECIFICATIONS � Power Requirements +5VDC ±0.2 VDC at 0.70 Amp, maximum, 0.50 Amp typical Power Dissipation: Typical: 2.1 Watts, Side 1; 0.4 Watt, Side 2. Maximum: 3.0 Watts, Side 1; 0.5 Watt, Side 2. � Physical Characteristics Height: 13.5 mm (0.53 in) Depth: 149.0 mm (5.87 in) Width: 74.0 mm (2.91 in) Shield: Side-1 protected by an EMI shield. � Environmental Specifications Ambient Temperature Range: Operating: 0 to +65 degrees Celsius inlet air Storage: -40 to +85 degrees Celsius Relative Humidity: Operating: 0 to 80%, non-condensing Storage: 0 to 95%, non-condensing Altitude: Operation to 10,000 ft. Cooling: Conventional convection cooling; 150 LFPM ORDERING INFORMATION Specify the basic product model number followed by an option suffix "-A", as indicated below. For example, model number PMC-16AICS32-2.0 describes a board with an excitation current of 2.000 milliamps. Optional Parameter Value Specify Option As: Excitation Current 0.400 ma A = 0.4 1.000 ma A = 1.0 or blank 2.000 ma A = 2.0 3.000 ma A = 3.0 5.000 ma A = 5.0 10.000 ma A = 10.0 8302A Whitesburg Drive · Huntsville, AL 35802 Phone: (256) 880-8787 or (800) 653-9970 FAX: (256) 880-8788 General Standards Corporation assumes no responsibility for the use of any circuits in this product. No circuit patent licenses are implied. Information included herein supersedes previously published specifications on this product and is subject to change without notice. SYSTEM I/O CONNECTIONS Table 1. System Connector Pin Functions ROW-A ROW-B SIGNAL SIGNAL PIN S.E. MODE DIFF MODE PIN S.E. MODE DIFF MODE 1 INP00 * INP00 HI * 1 INP32 * INP16 HI * 2 INP01 INP00 LO 2 INP33 INP16 LO 3 INP02 * INP01 HI * 3 INP34 * INP17 HI * ROW A ROW B 4 INP03 INP01 LO 4 INP35 INP17 LO 5 INP04 * INP02 HI * 5 INP36 * INP18 HI * 6 INP05 INP02 LO 6 INP37 INP18 LO 7 INP06 * INP03 HI * 7 INP38 * INP19 HI * 8 INP07 INP03 LO 8 INP39 INP19 LO PIN 34 9 INP08 * INP04 HI * 9 INP40 * INP20 HI * 10 INP09 INP04 LO 10 INP41 INP20 LO P5 11 INP10 * INP05 HI * 11 INP42 * INP21 HI * CONN 12 INP11 INP05 LO 12 INP43 INP21 LO 13 INP12 * INP06 HI * 13 INP44 * INP22 HI * 14 INP13 INP06 LO 14 INP45 INP22 LO 15 INP14 * INP07 HI * 15 INP46 * INP23 HI * PWB 16 INP15 INP07 LO 16 INP47 INP23 LO 17 AGND AGND 17 AGND AGND 18 AGND AGND 18 AGND AGND 19 INP16 * INP08 HI * 19 INP48 * INP24 HI * PIN 1 20 INP17 INP08 LO 20 INP49 INP24 LO 21 INP18 * INP09 HI * 21 INP50 * INP25 HI * 22 INP19 INP09 LO 22 INP51 INP25 LO 23 INP20 * INP10 HI * 23 INP52 * INP26 HI * Panel Pin-view 24 INP21 INP10 LO 24 INP53 INP26 LO 25 INP22 * INP11 HI * 25 INP54 * INP27 HI * Figure 2. System Input Connector 26 INP23 INP11 LO 26 INP55 INP27 LO 27 INP24 * INP12 HI * 27 INP56 * INP28 HI * System Mating Connector: 28 INP25 INP12 LO 28 INP57 INP28 LO 29 INP26 * INP13 HI * 29 INP58 * INP29 HI * 68-pin 0.050" Subminiature connector: 30 INP27 INP13 LO 30 INP59 INP29 LO with metal shield: 31 INP28 * INP14 HI * 31 INP60 * INP30 HI * AMP #749621-7 or equivalent. 32 INP29 INP14 LO 32 INP61 INP30 LO 33 INP30 * INP15 HI * 33 INP62/ * INP31 HI/ * SYNC HI ** SYNC HI ** Board connector (Ref): Amp # 787170-7. 34 INP31 INP15 LO 34 INP63/ INP31 LO/ SYNC LO** SYNC LO** * Selectable as an excitation pin. ** Software-selected. 8302A Whitesburg Drive · Huntsville, AL 35802 Phone: (256) 880-8787 or (800) 653-9970 FAX: (256) 880-8788