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NI 5421 Specifications
4
ni.com
Maximum Output Voltage
Maximum
Output
Voltage
Path
Load
Maximum Output Voltage (V
pk-pk
)
The Maximum
Output Voltage
of the NI 5421 is
determined by
the Amplitude
Range and the
Offset Range.
Direct
50
Ω
±0.500
1 k
Ω
±0.953
Open
±1.000
Low-
Gain
Amplifier
50
Ω
±1.000
1 k
Ω
±1.905
Open
±2.000
High-
Gain
Amplifier
50
Ω
±6.000
1 k
Ω
±11.43
Open
±12.00
Accuracy
DC Accuracy
For the Low-Gain or High-Gain Amplifier Path:
±0.2% of Amplitude ± 0.05% of Offset ±500 µV
(within ±10 °C of self-calibration temperature)
±0.4% of Amplitude ± 0.05% of Offset ±1 mV
(0 °C to 55 °C)
All paths are
calibrated for
amplitude and
gain errors. The
Low-Gain and
High-Gain
Amplifier Paths
also are
calibrated for
offset errors.
Specifications
valid only for
high impedance.
For the Direct Path:
Gain Accuracy: ±0.2% (within ±10 °C of self-calibration
temperature)
Gain Accuracy: ±0.4% (0 °C to 55 °C)
DC Offset Error: ±30 mV (0 °C to 55 °C)
AC Amplitude
Accuracy
±1.0% of Amplitude ±1 mV
50 kHz sine
wave.
Output Characteristics
Output
Impedance
50
Ω
nominal or 75
Ω
nominal, software-selectable.
—
Load
Impedance
Compensation
Output amplitude is compensated for user-specified load
impedances.
—
Table 1.
(Continued)
Specification
Value
Comments