AcPC424: Digital Input/Output Module
Differential, TTL, Counter/Timer

• 24 differential I/O, 16 TTL I/O

• Four 16-bit counter/timer channels with six operating modes

The AcPC424 provides 24 differential input/outputs, 16 TTL input/output channels, and four 16-bit multifunction counter/timers.

The 16 TTL input/output channels can be programmed as inputs or as outputs on an individual channel basis. The 24 differential input/output channels are programmed as inputs or outputs on an 4-channel port basis. All input channels can be enabled for change of state, low, or high level transition interrupts.

This module saves money and CompactPCI slots by combining differential I/O, TTL I/O, and counter/timer functions on one card.

Four 16-bit multifunction counters/timers can be configured for pulse width modulated output, watchdog timer, event counter, frequency measurement, pulse width measurement, period measurement, or one shot pulse output. The four 16-bit counters can also be configured into two 32-bit counter/timers.

Features & Benefits

• 0 to 70°C (-40 to 85°C E version)

Digital I/O

• 40 digital input/output channels:

– 24 differential input/outputs
– 16 TTL input/output channels
– Programmable change of state/level interrupts
– Input signal filtering debounce logic


• Four 16-bit or two 32-bit counter/timer channels (control lines shared with 16 TTL I/O channels)

• Six operating modes:

– Pulse width modulation
– Watchdog timer
– Event counter
– Frequency measurement
– Pulse width or period measurement
– One-shot and repetitive one-shot
– TTL-compatible thresholds
– Power-up and system reset are failsafe


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).


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.

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.