Data Acquisition (DAQ) and Control from Microstar Laboratories

DAP 4200a

Recommended for all new systems: DAP 5000a Data Acquisition Board

Obsolescent

The DAP 4200a is now an Obsolescent product. For new systems, use the DAP 5000a model.

 

Compare to the DAP 5000a

Download PDF Manual

Compatible Hardware

Compatible Software

The DAP 4200a:

  • has an onboard Intel i486 processor
  • comes with 16M of DRAM onboard memory
  • is compatible with other a-Series boards
  • works with the 5V PCI bus for PC-based platforms
  • transfers data to PC at high rates – up to 1.666M samples per second
  • allows fast real-time processing
  • offers low latency – 0.2 ms task time quantum – for fast response
  • increases sampling period resolution to 100 ns
  • provides onboard emulation of DSP routines
  • samples or updates the digital section at up to 1.66 million values per second
  • provides 14-bit A/D converter resolution
  • provides input voltage ranges of 0 to 5 volts, +/-2.5 volts, +/-5 volts, and +/-10 volts
  • provides output voltage ranges of 0 to 5 volts, +/-2.5 volts, +/-5 volts, +/-10 volts, and 0 to 10 volts
  • samples analog inputs at up to 769K samples per second
  • updates analog outputs at up to 833K samples per second each
  • has expandable analog and digital inputs/outputs
  • complies with the EMC Directive 89/336/EEC

There is one DAP 4200a model: the DAP 4200a/526.

The DAP 4200a uses the same type of analog and digital connectors as other a-series boards, so the DAP 4200a is compatible with all the same cabling and Eurocards for termination and expansion. All a-Series Data Acquisition Processor boards share the same Channel Architecture.

The DAP 4200a has a PCI host interface, and is capable of high speed data transfers to the host PC. The DAP 4200a requires a 5V 32-bit PCI slot. Using bus mastering DMA transfers, the DAP 4200a can transfer data to the host PC at 3.2M samples per second.

The DAP 4200a provides 14-bit A/D resolution for its 16 onboard analog inputs, and 12-bit D/A resolution for its 2 onboard analog outputs. The onboard analog input channels sample at an overall 769k samples per second at 12-bit resolution, and sample at 625k samples per second at 14-bit resolution. The 16 onboard digital input channels sample at an overall rate of 1.66M words per second.

The 486 processor gives the DAP4200a low latency – down to a 0.2 ms task time quantum. This means that when low latency mode is enabled, a single task will run for no more than 0.2 ms before DAPL switches to another task. This is crucial for process control applications where data must be responded to as quickly as possible.


DAP 4200a/526 Specifications:

General Specifications

Dimensions

12.28 inches x 4.2 inches

Weight

11.5 oz

Power requirements

+5V, 3.0 Amps

Operating temperature

0-50 degrees Celsius

Accuracy of crystal clocks

100 parts per million

Type of A/D converter

Successive Approximation

Input

Analog Inputs

16

Expandable to

512

Voltage Ranges

-0 to +5 volts, +/-2.5 volts, +/-5 volts, +/-10 volts

Samples (x 1000) per second*

769

Time increment (nanoseconds)

100

Minimum time interval (microseconds)*

1.30

Maximum Gain**

500

A/D Converters / Resolution (bits)

1/14

Digital Inputs (synchronous)

16

Expandable to

128

Samples (x 1000) per second

1666

Minimum time interval (microseconds)

0.6

Output

Analog Outputs

2

Expandable to

66

Voltage Ranges

-0 to +5 volts, +/-2.5 volts, +/-5 volts, +/-10 volts, 0 to +10 volts

Updates (x 1000) per second*

833

Minimum time interval (microseconds)*

1.2

DAC Resolution (bits)

12

Digital Outputs

16

Expandable to

1024

Updates (x 1000) per second

1666

Minimum time interval (microseconds)

0.6

Microprocessor

Processor

486:DX4

Clock Speed(MHz)

96

Onboard Operating System

DAPL 2000

RAM (Mbytes)

16

PC Interface Specifications

PC Interface

PCI

Samples (x1000) transferred per second***

1666

Samples (x1000) logged/second***

1666

DSP

Onboard DSP support

Yes

* To maintain full 14-bit resolution may require a lower sample rate when sampling more than one channel per ADC.
** Top sampling speeds are available only with gain=1. Gains of 10, 100, and 500 are also available.
*** Disk logging and data transfer rates vary with PC platform.

Obtain additional information from Technical Note 212: Technical Product Information for the DAP 4200a (25k PDF file).

Go back to the top.