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AcPC330: Analog Input CompactPCI Board

• 16D/32SE input channels
• ±5V, ±10V, 0-5V, and 0-10V input ranges
• 16-bit A/D converter, 8µS conversion time (125KHz)

AcPC330 boards provide fast, high resolution A/D conversion.

The AcPC330 has many features to improve your overall system throughput rate. You can scan all channels or define a subset for more frequent sampling. Burst mode scans selected channels at the maximum conversion rate. Uniform mode performs conversions at user-defined intervals. Both modes can scan continuously, or execute a single cycle upon receiving a trigger.

“Mail box” memory allows the CPU to read the latest data in 32 storage buffer registers without interrupting the A/D converter.

Features & Benefits
“Mail box” memory eliminates scanning interruptions for optimum throughput.
Data register indicates new and missed (overwritten) data values in the mail box.
Programmable interrupts simplify data acquisition by providing greater control.
16-bit A/D converter (ADC)
8µS conversion time (125KHz)
16 differential or 32 single-ended inputs (±5V, ±10V, 0-5V, and 0-10V input ranges)
Individual channel mailbox with one or two storage buffer registers per channel
Programmable scan control
Four scanning modes
User-programmable interval timer
External trigger input and output
Programmable gain for individual channels
Post-conversion interrupts
0 to 70°C (-40 to 85°C E version)

Analog Input
Input configuration: 16 differential or 32 single-ended channels.
A/D resolution: 16 bits.
Input ranges: ±5V, ±10V, 0-5V, and 0-10V.
Programmable gains: 1x, 2x, 4x, 8x.
Data sample memory: Individual channel mailbox with one or two storage buffer registers per channel.
A/D triggers: External and software.
Internal timer: One user programmable timer for analog input acquisition control.
System accuracy: ±3 LSB (0.005%) typical (SW calib., gain=1, 25°C).
Input overvoltage protection: Vss -20V to Vdd 40V with power on, -35V to 55V power off.
Common mode rejection ratio (60Hz): 96dB typical.
Channel-to-channel rejection ratio (60Hz): 96dB typical.

Environmental
Operating temperature: 0 to 70°C (E version -40 to 85°C).
Power: 290mA at +5V (350mA maximum).

CompactPCI bus Compliance
Meets PCI spec. V2.2 and PICMG 2.0, R3.0.
Data transfer bus: Slave with 32-bit, 16-bit, and 8-bit data transfer operation.
Interrupts (INTA#): Interrupt A is used to request an interrupt.
Plug-and-Play: The system maps the base address into the PCI bus 32-bit memory space.

AcPC341: Analog Input CompactPCI Board, Simultaneous Conversion

• 16 differential inputs

• ±10V DC input range

• Eight 14-bit A/D converters with simultaneous sample and hold

• 8µS conversion time for 8-channel bank

AcPC341 boards provide fast, high resolution, simultaneous A/D conversion of eight channels.

These boards have sixteen analog inputs which are sampled as two eight-channel banks. Eight A/D converters (ADCs) permit simultaneous conversion of all eight channels in a bank. All 16 channels share two generous 512-sample memory buffers. Conversion of each bank requires only 8µS, and all 16 channels can be sampled in just 16µs.

This board is ideal for high-speed data acquisition. A large memory buffer reduces CPU interactions for increased overall performance.

Flexible configuration options give you extensive control over the conversion process. The channels or bank to be converted, timing, scan mode, and other parameters are user-programmable. Interrupt support adds further control to interrupt upon a programmable threshold when the data in memory exceeds the set threshold.

Features & Benefits
• 16 differential inputs (±10V DC input range)
• Eight 14-bit A/D converters with simultaneous sample and hold capability
• 8µS conversion time (125KHz) for 8-channel bank
• Two 512-sample memory buffers
• Data tagging for channel identification
• Programmable conversion timer
• Programmable channel conversion control
• External trigger input and output
• Continuous and single-cycle conversion modes
• Interrupt generation for memory full threshold conditions
• Precision calibration voltages stored on-board
• 0 to 70°C (-40 to 85°C E version)

Analog Inputs
Input channels: 16 differential.
A/D resolution: 14 bits.
Input range: ±10V.
Maximum throughput rate:
Eight channels can be simultaneously acquired.
One channel: 125KHz (8μS/conversion)
8 channels (same bank): 1MHz (8μS/8 channels)
16 channels (high & low banks): 1MHz (16μS/16 ch. at
maximum 2.2K ohm source resistance).
Data sample memory: Two 512-sample memory buffers allows writing to one buffer while reading from the other.
A/D triggers: Internal timer, external, and software.
Internal conversion timer: User-programmable delay between simultaneous conversion of 8-channel banks.
Maximum delay is 2.09 second interval.
System accuracy: 2.4 LSB (0.014%).
Data format: Binary two’s compliment.
Overvoltage protection: ±25V (power on), ±40V (off).

Two IP module slots. Rear access I/O. Plug-and-play carrier configuration and interrupt support.

The AcPC8635A is a non-intelligent slave board that interfaces two IP modules to the CompactPCI® (cPCI) bus.

All 100 I/O points are brought out the rear J2 connector. This convenience eliminates messy cables from hanging out the front of the cage. In addition to a more efficient cage wiring design, it is also much easier to insert and replace boards.

The AcPC8635A is a drop in replacement for the AcPC8635, please contact the factory for more information.

Performance Specifications

General

Acromag’s carrier boards provide full data access to the IP module’s I/O, ID and interrupt spaces. With full access to the programmable registers, you can easily configure and control the operation of the IP modules from the cPCI bus.

Up to two interrupt requests are supported for each IP module. All board interrupts are mapped to PCI bus INTA# signal.

Individual passive filters on each IP power supply line provide optimum filtering and noise isolation between the IP modules and the carrier board.
IP Compliance (ANSI/VITA 4)

Meets IP specs per ANSI/VITA 4-1995 (8MHz operation only) and IP I/O mapping to J2 per PICMG 2.4 R1.0.
Electrical/mechanical interface: Supports single or double size IP modules.
IP Module I/O space, ID space, INT, and MEM space supported.
Interrupts: Supports two interrupt requests per IP module and interrupt acknowledge cycles via access to IP INT space.

CompactPCI bus Compliance
Meets PCI spec. V2.1 and PICMG 2.0, R2.1.

Features and Benefits:
wo industry-standard IP module slots
Board resides in memory space
Supports IP module I/O, ID, INT, and MEM spaces
Supports 8 and 32 MHz operation
100 I/O points with rear access
High-density rear connectors
Compatible with 32-bit CompactPCI® backplane
Plug-and-play carrier configuration and interrupt support
Two interrupt channels per IP module
Front panel LEDs
Supervisory circuit for reset generation
Individually filtered and fused power to each IP
• Ruggedized with ESD strip and EMC front panel
• Easily integrate IPs with your software using RTOS VxWorks, Linux, or Win DLL for Windows® 2000/XP/Vista/7 32-bit systems