National Instruments 5441 Bedienungsanleitung PDF herunterladen (Seite 30)

NI 5441 Specifications 30 ni.com

Pre-Filter

Offset Range

–1.0 to +1.0 Applied after

Pre-Filter Gain

Output Output = (User Data × Pre-Filter Gain) + Pre-Filter Offset

(–1 ≤ Output ≤ +1)

Pre-Filter

Output

FIR (Finite Impulse Response) Filter

Filter Length 95 Taps The FIR Filter

is used to pulse

shape the IQ

Data and to

compensate

for the CIC

Filter roll-off.

Coefficient

Width

17 bits (–1 to +1)

Filter

Symmetry

Symmetric

Interpolation

Range

2, 4, or 8

Coefficients Automatically generated by NI-FGEN (refer to FIR Filter

Types) or Custom Coefficients provided by the user

Specification Value Comments

1 2 ... 25 26 27 28 29 30 31 32 33 34 35 ... 43 44

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National Instruments 5441 Bedienungsanleitung Seite 30