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© National Instruments Corporation 3 NI 5421 Specifications
Amplitude and Offset
Amplitude
Range
Path Load
Amplitude (V
pk-pk
) 1. Amplitude
values assume
the full scale
of the DAC is
utilized. If an
amplitude
smaller than
the minimum
value is
desired, then
waveforms less
than full scale
of the DAC can
be used.
2. NI-FGEN
compensates
for user-
specified
resistive loads.
Minimum Value Maximum Value
Direct 50 Ω 0.707 1.00
1 kΩ 1.35 1.91
Open 1.41 2.00
Low-
Gain
Amplifier
50 Ω 0.00564 2.00
1 kΩ 0.0107 3.81
Open 0.0113 4.00
High-
Gain
Amplifier
50 Ω 0.0338 12.0
1 kΩ 0.0644 22.9
Open 0.0676 24.0
Amplitude
Resolution
3 digits —
Offset Range Span of ±25% of Amplitude Range with increments
<0.0014% of Amplitude Range.
Not available on
the Direct Path.
Table 1. (Continued)
Specification Value Comments