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BSA Flow Software Installation and User's Guide - CSI

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Mean <strong>and</strong> RMS The last columns contain the calculated Mean-velocities <strong>and</strong> RMS-values for<br />

each of the bins. In the example in Figure 6-47 <strong>and</strong> Figure 6-48, the samples<br />

come from LDA1, but they may also come from another channel, or be<br />

labelled U, V or W, if coincidence filtering <strong>and</strong> coordinate transformation<br />

has been performed prior to phase sorting.<br />

Again coincidence filtering prior to phase sorting will yield mean- <strong>and</strong> RMSvalues<br />

for all of the samples (velocities) available.<br />

In case of PDA data, Mean <strong>and</strong> RMS diameter are also calculated.<br />

Encoder based<br />

In Figure 6-49 phase sorting has been done on the basis of encoder pulses,<br />

using Reset Encoder to mark cycle resets.<br />

Encoder based information Encoder averaged information<br />

Figure 6-49 Output from the Cyclic phenomena object, Encoder <strong>and</strong> Reset<br />

Encoder inputs active (Not the same project as previous figure)<br />

AT The arrival time shown here is relative to start of the acquisition.<br />

Encoder The Encoder shown in Figure 6-49 is relative to the latest Reset-Pulse<br />

received. Synchronization mode Encoder count, phase sorting is done based<br />

on this value. It should be noticed that the encoder is running continuously<br />

<strong>and</strong> then some sample data might be recorded before the first reset encoder<br />

pulse: this data cannot be taken into account in the calculations.<br />

TT The Tansit Time shown is the measured transit time of each particle.<br />

Angle The column labelled Angle contains estimated phase angles measured from<br />

the encoder pulses. The phase angles are estimated from the number of<br />

pulses since last reset, <strong>and</strong> the cycle length specified in the property Pulses<br />

pr. Cycle.<br />

Cycle No The Cycle number is the number of encoder reset events.<br />

Bin No A cycle is divided in a number of bins (see chapter 6.3.4). The bin No is the<br />

bin number that each sample belongs to. Please, note that the bin resolution<br />

is determined by the encoder resolution: number of bin should not be higher<br />

that the encoder pulses per cycle.<br />

Raw Information The sixth column contains the phase-sorted individual samples. In the<br />

example in, the samples come from LDA1.<br />

With 2- or 3-dimensional measurements coordinate transformation can be<br />

performed prior to phase sorting, <strong>and</strong> the resulting orthogonal velocities U,<br />

V <strong>and</strong> W will then be shown in separate columns. Coordinate transformation<br />

requires coincidence filtering, <strong>and</strong> whenever coincidence filtering is<br />

6-50 <strong>BSA</strong> <strong>Flow</strong> <strong>Software</strong>: Options <strong>and</strong> Add-ons

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