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BSA Flow Software Installation and User's Guide - CSI

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6.8.6 Data output<br />

6.8.7 Specifications<br />

Figure 6-88 Analog monitor channel properties<br />

A Moments object is required to access the Analog monitor data. To access<br />

the data, a List, a graph or an Export object can be added.<br />

The analog data can be further processed <strong>and</strong> displayed the same way as the<br />

other data from the Moments object.<br />

Input impedance: 10 kΩ<br />

Resolution: 12 bit, 2.5mV<br />

Range, unipolar: 0V to 10.24V<br />

Full scale accuracy: ±1%<br />

Linearity: ±0.05%<br />

Maximum safe input voltage: ±20V<br />

Sampling frequency: 8 Hz<br />

Inputs are not low-pass filtered, so high-frequency noise at the inputs can<br />

affect accuracy. Many “slow” tr<strong>and</strong>ucers will have an upper frequency limit<br />

of less than 4 Hz, in which case the Nyquist sampling theorem is satisfied.<br />

If the signal may contain frequencies higher than 4 Hz, it should be passed<br />

through an anti-aliasing filter (low-pass filter) with a cut-off frequency of 4<br />

Hz, to avoid errors due to under-sampling.<br />

6.9 LIF <strong>and</strong> Parametric Analysis Add-on<br />

This add-on is designed to do calibration for concentration or temperature<br />

LIF measurements. It can also be used to do parametric analysis study like<br />

the influence of injection pressure on the particles velocity.<br />

Installing the “LIF <strong>and</strong> parametric analysis add-on” adds<br />

• a 4 th column in the measurement position table for the input<br />

parameters<br />

• a curve fitting in the Profile plot object<br />

6-96 <strong>BSA</strong> <strong>Flow</strong> <strong>Software</strong>: Options <strong>and</strong> Add-ons

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