Description

The ACL-8111 is a low cost, high performance analog and digital I/O board for IBM PC/AT and compatible computers. It offers the most popular data acquisition functions, such as A/D conversion, D/A conversion and digital I/O.

The board provides 8 single-ended inputs with 12-bit resolution. The analog input range is from ±5 V to ±0.3125 V. The different input ranges are software programmable. The ACL-8111 uses an industrial standard B.B. 574 successive approximation A/D converter. The maximum A/D throughput is up to 30 KHz.

The A/D conversion can be triggered by Software Polling, Timer Pacer and External Trigger. The transfer of converted data can be accomplished by Program Control and Interrupt Service Routine (ISR), both modes can be handled by software.

One channel of multiplying 12-bit double-buffered analog output is provided on the ACL-8111. A +5 V internal reference is used to provide analog output in the range of +5 V to 0 V. When an external reference is used it can generate
0 ~ +10 V or 0 ~ -10 V output.

There are 32-bits of digital I/O (16 digital inputs and 16 digital outputs) to interface to a variety of digital signal boards through two 20-pin connectors. These digital bits are used to control multiplexers, read external status, gate the timer/counter, etc.

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Features

• 8 single-ended 12-bit analog input channels
• Software programmable input range:
  ±5 V, ±2.5 V, ±1.25 V, ±0.625 V, and ±0.3125 V
• One 12-bit monolithic multiplying analog output channel
• 16 TTL compatible digital outputs
• 16 TTL compatible digital inputs
• Three A/D trigger modes:
  - software trigger
  - programmable pacer trigger
  - external pulse trigger.
• Programmable IRQ level for A/D data transfer
• Register structure is compatible with ACL-711B/PCL-711B

Application

- Measurement of Transducer and Sensor Data
- Multiple Channel Measurement
- Waveform Acquisition and Measurement
- Process Monitor
- Vibration and Transient Analysis

Software

Software supplied with the ACL-8113 includes system configuration setup,
a complete calibration routine and functional testing.

An extensive library of functions are available to support Microsoft C and Borland C/C++. There are many C example programs showing how to write data acquisition programs for ACL-8113

ACLS-DLL2 is a high performance data acquisition driver for developing custom applications under Windows. It handles all data acquisition operations including interrupt or software data transfer, etc. The Windows driver is supplied as a DLL that can be accessed from C, C++ and Visual Basic under Windows.

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Specifications

• I/O base address: 16 consecutive address location

Analog Input (A/D)

• Channels : 8 single-ended, 12-bit resolution
• Input range: ±5 V, ±2.5 V, ±1.25 V, ±0.625 V, ±0.3125 V
  software programmable
• Over voltage protection : continuous ±30 V max.
• Conversion type : successive approximation
• Converter : B.B. ADS574JH or equivalent
• Conversion speed : 25 µsec
• Accuracy : 0.015% of reading ±1 bit LSB
• Linearity : ±0.5 bit
• Common Mode Rejection : 60 dB typical
• Input impedance : > 10 Mohm
• Trigger mode : software, on-board programmable timer or external trigger
• Data transfer : program control, interrupt control
• IRQ levels : IRQ2, ..., IRQ7
• Amp Gain : 1, 2, 4, 8 and 16; software programmable
• External trigger : TTL compatible, load 0.4 mA max. @ 0.5 V (low)
  or 0.05 mA max. @ 2.7 V (high)

Analog Output (D/A)

• Channels : 1
• Resolution : 12-bit
• Output range : 0 ~ +5 V or 0 ~ +10 V
• Reference voltage : -5 V or -10 V
• Conversion type : monolithic multiplying
• Converter : B.B. DAC7548 AJP or equivalent
• Setting time : 30 µsec
• Non-linearity : ±1/2 bits LSB
• Output drive : ±5 mA max.

Digital Input

• Channels : 16, TTL compatible
• Input logic low : Min. -0.5 V; Max. 0.8 V
• Input logic high : Min. 2.0 V; max. 5.0 V

Digital Output

• Channels : 16, TTL compatible
• Output logic low : Min. 0.5 V at 24 mA (sink)
• Output logic high : Min. 2.0 V at 15 mA (source)

Physical/Environment

• I/O connectors : one 37-pin D-sub and two 20-pin flat cable connectors
• Operating temp : 0 ~ 50ºC
• Storage temp : -20 ~ +80ºC
• Humidity : 5~90%, non-condensing
• Dimensions : 175mm (L) x 121mm (W)
• Power consumption :
  +5 VDC @ 100 mA typical, 200 mA max.
  +12 VDC @ 40 mA typical, 100 mA max.
  -12 VDC @ 20 mA typical, 50 mA max.

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Ordering Information

ACL-8111 : Enhanced Multi-Function Data Acquisition Board
includes software utility and programming library

ACLD-9137 : Direct Screw Terminal Board

ACL-8111S : ACL-8111 and ACLD-9137

ACLS-DLL2 : Windows Drivers for ACL-8111

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