7-4 Specifications 988093 Note: Specifications are subject to change without notice.
Analog Outputs Applicable to DaqBoard/3000 and /3001 only
Analog output channels are updated synchronously relative to scanned inputs, and clocked from either an
internal onboard clock, or an external clock source. Analog outputs can also be updated asynchronously,
independent of any other scanning in the system. Bus mastering DMA provides CPU and system-independent
data transfers, ensuring accurate outputs that are irrespective of other system activities. Streaming from disk or
memory is supported, allowing continuous, nearly-infinite length, waveform outputs (limited only by available PC
system resources).
Channels:
DaqBoard/3000: 2 DAC channels (DAC0, DAC1)
DaqBoard/3001: 4 DAC channels (DAC0, DAC1, DAC2, DAC3)
Resolution: 16 bits
Data Buffer: PC based memory
Output Voltage Range: ±10V
Output Current: ±10 mA
Offset Error: ±0.0045V maximum
Digital Feedthrough: <10 mV when updated
DAC Analog Glitch: <12 mV typical at major carry
Gain Error: ±0.01%
Update Rate: 1 MHz maximum, 19 hours minimum (no minimum with external clock); resolution: 20.83 ns
Settling Time: 2 µs to rated accuracy.
Clock Sources: 4 programmable
1. Onboard D/A clock, independent of scanning input clock
2. Onboard scanning input clock
3. External D/A input clock, independent of external scanning input clock
4. External scanning input clock
Digital I/O
One Digital I/O Channel, Typical
Channels: 24
Ports: 3 x 8-bit. Each port is programmable as input or output.
Input Scanning Modes: 2 programmable
1. Asynchronous, under program control at any time relative to input scanning
2. Synchronous with input scanning
Input Characteristics: 10K Ω pull up to +5V, 20 pF to common
Input Protection: ±15 kV ESD clamp diodes parallel
Input Levels:
Low: 0 to 0.8V
High: +2.0V to +5.0V
Output Levels:
Low: < 0.8V
High: >2.0V
Sampling/Update Rate: 12 MHz maximum
Output Characteristics: Output 12 mA per pin, 200 mA total continuous (per bank of 24 outputs)