BAR Graphs

Screen Display

The most commonly used display type is the Bar graph with large numeric readout. This display most closely resembles a "normal" lock-in. The bar graph display is shown below. The bar graph only occupies half of the screen, even when the screen format is full height. Thus, it generally makes sense to use the bar graph in split screen mode and show two bar graphs.

Trace Identifier

Trace 1

Trace Definition

X = 9.7284 mV

Full scale range ± 10.000 e-3

Trace Offset

and Expand

Indicators

0.0V

Center value and Trace Units

Trace Identifier and Active Display

The bar graph is labelled with a trace identifier above it. This indicates which trace is being dis- played. The trace definition is shown next to the identifier. If this display is the active display, the trace identifier will be in inverse. When a bar graph is the active display, the [AUTO SCALE] key will scale the bar graph. There is no cursor function for this display. Pressing the [CURSOR] key will not activate a cursor.

When the trace definition is simple (X, Y, R, θ or F) the trace definition is displayed in the large numer- ic readout (X=). If the trace is defined as Xn, Yn, Rn, AI1, AI2, AI3 or AI4, or involves a product or ratio (A•B/C where either B or C or both are non- unity), then the large readout simply shows 'T1=' (for Trace 1) instead of the actual parameter(s) being monitored. The trace definition above the readout is always displayed fully however.

Bar Range and Center

The graph range and center value are displayed below the graph. These values are in the units of the displayed trace.

Bar Scaling

The bar graph scaling can be changed in the DISPLAY/SCALE menu. Both the center value and the range can be changed. This allows the bar

graph to expand a portion of the full scale range around a nominal value. The bar will always be drawn from the center (nominal value).

For the simple traces, X, Y, and R, changing the sensitivity will automatically scale the bar graphs so the range is equal to the sensitivity and zero is at the center. For other trace definitions, the bar scaling is not changed when the sensitivity is changed.

Using [AUTO SCALE] will adjust the range to make the measured output greater than 40% of the new range. [AUTO SCALE] always returns the center to zero.

Rate

The bar graph is updated at a rate of about 7 Hz while the numeric readout changes at about 2 Hz. When the data is noisy, the bar graph more accu- rately shows the "noisiness" while with steady readings, the numeric display is an accurate measure of the signal.

Offset and Expand

If the trace being shown is affected by a non-zero offset or a non-unity expand, then the Offst and Expd alert indicators are turned on.

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SR850 specifications

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Furthermore, the SR850 features advanced EQ capabilities, granting users the ability to tailor the audio output to their specific tastes. This personalized approach to sound adjustment enhances the overall experience, allowing users to get the most out of their audio content.

In summary, the SRS Labs SR850 is a sophisticated audio processor packed with features designed to significantly uplift sound quality and listening pleasure. With its cutting-edge technologies such as SRS 3D Audio and dialog clarity, an array of connectivity options, and customizable EQ settings, the SR850 stands out as an outstanding option for anyone looking to enhance their audio experience. Whether for professional use in sound engineering or personal enjoyment in home entertainment, the SR850 proves to be a valuable asset.

SRS Labs SR850 manual BAR Graphs

Models: SR850