Introduction
3
1.3 Specifications
Analog Output (AO)
X
Number of channels: 4-CH for DAQ/PXI-2501, 8-CH for
DAQ/PXI-2502
X
DA converter: AD7945
X
Max update rate: 1MS/s
X
Resolution: 12 bits
X
FIFO buffer size: 8K for DAQ/PXI-2501, 16K for DAQ/PXI-
2502
X
Data transfer: Programmed I/O, and bus-mastering DMA
with scat-ter/gather
X
Voltage reference: internal 10V or external up to
±
10V
X
Output range:
Z
Bipolar:
±
10V or
±
external reference
Z
Unipolar: 0~10V or 0~ external reference
X
Settling time for –10~+10V step: 2
μ
s
X
Slew rate: 20V/
μ
s
X
Output coupling: DC
X
Protection: Short-circuit to ground
X
Output impedance: 0.1
Ω
. max.
X
Output current:
±
5mA max.
X
Power-on state: 0V steady-state
X
Power-on glitch:
±
600mV/500
μ
s
X
Offset error:
Z
Before calibration:
±
80mV max
Z
After calibration:
±
2mV max
X
Gain error:
Z
Before calibration:
±
0.8% of output max
Z
After calibration:
±
0.02% of output max