Appendix A Specifications
DAQArb 5411 User Manual A-2
©
National Instruments Corporation
Output attenuation............ .. ... .... .. .. .. ... 0 to 73 dB
Resolution ...................................0.001 dB ste ps
Pre-attenuation offset
Range.... .. .... .. .. .... .. .. .... ... .. .... .. .... . ±2.5 V into 50 Ω
(but with less than 10 dB of
attenuation, signal maximum plus
offset (before attenuation) must not
exceed ±5 V (into 50 Ω))
Accuracy.....................................±5 mV
Output coupling ................................D C
Output impedance .............................50 Ω or 75 Ω software selectable
Load impedance ................................50 Ω or g reater
Output enable.....................................Software switchable
Protection................. ...... .... ..... .... ...... . Short-circuit protected
Sine Spectral PurityHarmonic products and spurious
up to 1 MHz................................–60 dBc
up to 16 MHz .............................. –35 d Bc
Phase noise.........................................–105 dBc/Hz at 10 kHz from
carrier
Filter CharacteristicsDigital
Type...... .... ...... .... .... .... ....... .... .... . Half-band interpolating
Selection......................................Software switchable
Taps ......................................... ... 67
Filter coefficients ....................... Fixed 20-bit
Data interpolating frequency ......80 MS/s
Pipeline signal delay ................ .. . 26 sampling periods
Note: The digital filter will be operational only for sample rates of 40 MHz and
20 MHz. For other sample rates, the digital filter will not be of any use.