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© National Instruments Corporation 5 NI 5421 Specifications
Output
Coupling
DC —
Output
Enable
Software-selectable. When disabled, CH 0 out is terminated
with a 1 W resistor with a value equal to the selected output
impedance.
—
Maximum
Output
Overload
The CH 0 output can be connected to a 50 Ω, ±12 V
(±8 V for the Direct Path) source without sustaining any
damage. No damage occurs if the CH 0 output is shorted to
ground indefinitely.
—
Waveform
Summing
The CH 0 output supports waveform summing among
similar paths—specifically, the outputs of multiple NI 5421
signal generators can be connected together.
—
Frequency and Transient Response
Bandwidth 43 MHz Measured at
–3 dB.
Digital
Interpolation
Filter
Software-selectable Finite Impulse Response (FIR) filter.
Available interpolation factors are 2, 4, or 8.
—
Analog
Filter
Software-selectable 7-pole elliptical filter. Available on
Low-Gain
Amplifier and
High-Gain
Amplifier Paths.
Passband
Flatness
Path —
Direct
Low-Gain
Amplifiers
High-Gain
Amplifiers
+0.6 dB to –0.4 dB
100 Hz to 40 MHz
+0.5 dB to –1.0 dB
100 Hz to 20 MHz
+0.5 dB to –1.2 dB
100 Hz to 20 MHz
Pulse
Response
Path Analog Filter
and Digital
Interpolation
Filter disabled.
Direct
Low-Gain
Amplifier
High-Gain
Amplifier
Rise/Fall Time <5 ns <8 ns <10 ns
Aberration <10% <5% <5%
Table 1. (Continued)
Specification Value Comments