DAP 4000a: When you need economical processing

Use the DAP 4000a in applications that require light-to-moderate real-time processing. Call us to find out how real-time processing can benefit your application.

The DAP 4000a models

• have an onboard 486 processor
• come with 8MB of DRAM onboard memory
• are compatible with other a-Series boards
• use a PCI bus for PC-based platforms
• transfer data to PC at high rates – up to 800k samples per second
• allow real-time processing
• offer low latency – 0.2 ms task time quantum – for fast response
• increase sampling period resolution to 50 ns
• provide onboard emulation of DSP routines
• sample or update the digital section at up to 800k values per second
• provide 14-bit A/D converter resolution
• provide the same input and output voltage ranges as the DAP 4200a
• sample analog inputs at up to 800k samples per second
• update analog outputs at up to 400k samples per second each
• have expandable analog and digital inputs/outputs
• complies with the EMC Directive 89/336/EEC

There are two DAP 4000a models: the DAP 4000a/212 and the DAP 4000a/112.

The DAP 4000a/212 model has a less powerful processor than most other DAP boards; it does include a high channel-count option that gives it the same input expansion potential. Choose the DAP 4000a/212 for the benefits associated with onboard intelligence when you have light-to-medium real-time processing requirements. The DAP 4000a/112 model has exactly the same attributes as the DAP 4000a/212 except for the high channel-count option. Choose the DAP 4000a/112 over the DAP 4000a/212 when your application requires only relatively few inputs. If later you require more inputs, you can return your DAP 4000a/112 to have the factory install the high channel-count option that upgrades your board to a DAP 4000a/212.

The DAP 4000a uses the same type of analog and digital connectors as other a-Series boards, so the DAP 4000a 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, although input expansion boards cannot be used with the DAP 4000a/112 model.

The DAP 4000a has a PCI host interface, and is capable of high speed data transfers to the host PC. Using bus mastering DMA transfers, the DAP4000a can transfer data to the host PC at the maximum sampling rate of 800k samples per second.

Each DAP 4000a model 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 800k samples per second, and the 16 onboard digital input channels sample at an overall rate of 800k words per second. The two onboard analog output channels update at an overall 400k updates per second, and the 16 onboard digital output channels update at an overall 800k words per second.

DAP 4000a/212 and DAP 4000a/112 Specifications

* 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.

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