The Measurement Computing/IOtech Daqboard/2000 is a data acquisition card that fits in a
PCI slot within your PC.
Its function is to
- convert analog waveforms on recording channels into digital waveforms suitable for the computer.
- convert arrays of numbers in the computer to voltages that serve as output waveforms
- receive trigger pulses from some instrument as a signal to start recording (at user's option)
Some of the major features of this data acquisition card as used in
the NAC 2.0 neurodata acquistion system are:
- 8 differential recording channels
- 16 bits of resolution on recording channels.
- recording channel gain/card range of 1x (±10V), 2x (±5V), 4x (±2.5V), 8x (±1.25V),
16x (± 625 mV), 32x (± 312.5 mV), and 64x (±156.25 mV)
- recording channel gain can differ from channel to channel
- 200 kHz maximum conversion rate summed over all recording channels
- two 50 kHz 16-bit ±10V waveform-quality analog output channels or one 50 kHz
analog waveform output channel and/or up to 4 digital (TTL) waveform output channels.
An important feature of the DaqBoard/2000 is its use of input and output buffers.
The various Microsoft Windows® operation systems that NAC 2.0 runs on all use multitasking.
That is, at unpredictable times, the operating system gives time slices to different
processes running on your PC.
So as you run the NACGather data acquisition program,
Windows will temporarily stop NACGather for tiny bits of time
and then run something else
and then come back to NACGather.
By buffering input and output data, the DaqBoard/2000 can continue to receive and output data
for the brief intervals during which another program/process is running.
As long as you are reasonable about not running other programs (esp. at high priority)
while you run NACGather, you should not have any gaps in your
output waveforms or recordings and the output waveforms and recordings should be
tightly synchronized in time.
More details on the DaqBoard/2000 can be found in Measurement Computing's
DaqBoard/1000 and /2000 Series User's Manual.
The DaqBoard/2000 is supported only on Windows 7/Vista/XP SP2 (32-bit or 64-bit).
The DaqBoard/2000 requires a Bus Mastering DMA-enabled PCI slot within your PC.
Most modern PCs have such PCI slots although you should check the available PCI slot
before you install the DaqBoard/2000.
Note that some computers have BIOS settings that enable or disable Bus Mastering DMA.
Of course, if your BIOS has this option, make sure Bus Mastering DMA is enabled.
Your PC needs enough room for the 165mm W x 15mm D x 108mm H
(6.5"x0.6"x4.2") DaqBoard/2000 PCI card.
This is not a concern for most PCs but if you buy a PC with a very small case
then you should check to see if there is enough room for the card.
Note that there are different kinds of PCI slots. The DaqBoard/2000 uses a conventional PCI slot - NOT a PCI-express slot. Please refer to the Daqboard/2000 Product Data Sheets for more details.