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Measurement Computing DaqBoard 1000 Series User Manual

Page 83

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Note: Specifications subject to change without notice.

889094

Specifications – DaqBoard/2000 Series 7-5

Pattern Generation Output

Applicable to DaqBoard/2000, /2001, /2002, /2004, /2005

The P3 16-bit digital I/O port can be configured for 16-bit pattern generation. The pattern can be

updated synchronously with an acquisition from a file. If pattern generation mode is utilized, then the

D/A outputs can only be used in an asynchronous mode. Bus mastering DMA provides CPU and

system-independent data transfers, insuring data acquisition performance irrespective of other

system activities. Streaming from disk or memory is supported, allowing continuous, nearly-infinite

length, pattern outputs (limited only by available PC system resources)

Frequency/Pulse Generators

Applicable to DaqBoard/2000, /2001, /2002, /2004, /2005

Channels: 2 x 16-bit

Output Waveform: Square wave

Output rate: 1 MHz base rate divided by 1 to 65535 (programmable)

High level output voltage: 2.0 V minimum @ -3.75 mA, 3.0 V minimum @ -2.5 mA

Low level output voltage: 0.4 V maximum @ 2.5 mA

Frequency/Pulse Counters

Applicable to DaqBoard/2000, /2001, /2002, /2004, /2005

Counter inputs can be scanned synchronously along with analog and digital scanned inputs, based

either on internal programmable timer, or an external clock source. Bus mastering DMA provides

CPU and system-independent data transfers, insuring data acquisition performance irrespective of

other system activities. Counters can be configured to clear when read, or to totalize and clear under

program control.
Channels: 4 x 16-bit, cascadable as 2 x 32-bit

Input rate: 10 MHz maximum
Input Signal Range: -15 V to +15 V

Input Characteristics: 2.7 kΩ series in parallel with 20 pF to common and 10 kΩ to +5 V
Input protection: ±8 kV ESD clamp diodes parallel

Trigger Level: TTL

Minimum pulse width: 50 ns high, 50 ns low

Included Accessories and Software

for DaqBoard/2000 Series

Software: Windows Drivers (32-bit), 90-day Getting Started DaqView

Hardware: DBK205 is included with only DaqBoard/2003 and DaqBoard/2003c. This adapter option

provides screw-terminal access to the board’s four analog outputs (DAC0, DAC1, DAC2,

and DAC3), 1 digital ground, 5 analog grounds, an external clock (CLK), and an external

trigger (XTTL).

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