Trace and Scan Menu

The A, B and C parameters may be set to the quantities X, Y, R, θ, Xnoise, Ynoise, Rnoise, Aux Inputs 1-4 (on the rear panel), Frequency, and unity. C may also be any quantity squared. X, Y, R and θ are the normal lock-in output quantities. Frequency is useful when the reference is unknown or changing (as in an external sweep). The rear panel aux inputs can digitize a slowly varying signal with16 bits of resolution to monitor external parameters which affect the lock-in measurement. The noise values are calculated by the SR850 and represent the noise of the signal in the equivalent noise bandwidth of the low pass filter time con- stant. See the SR850 Basics section for more about noise measurements.

Normal measurements rarely require a trace other than simply X, Y, R or θ. Ratio normalization to an external voltage requires a trace defined as R/Aux Input 1 for example. Noise or frequency may be displayed by defining a trace as Xnoise or Frequency.

Store/Do Not Store Pressing this key selects whether the trace selected above will be stored in the data buffer or not. If store is chosen, when the scan begins, trace data will be stored in the data buffer at the sample rate. The data buffer can record up to 64000 data points in memory. This buffer can be 64000 points of a single trace, 32000 points of two traces, or 16000 points of all four traces.

Data is stored only while data acquisition is in progress. The [START/ CONT] key starts a data scan. The Run or Run 1 scan indicators are turned on in the status bar at the bottom of the screen.

Only traces that are stored may be displayed in strip chart form.

Sample Rate

See the SR850 Operation section for more about trace scans.

This key selects the Sample Rate as the active field. Use the knob to adjust the sample rate. The sample rate can be varied from 62.5 mHz (1 point every 16 sec.) up to 512 Hz. Increasing the sample rate past 512 Hz will select Triggered samples. In this mode, a sample is recorded within 2 ms of a rising edge trigger on the rear panel Trigger input. Trig- gers which occur faster than 512 Hz are ignored. When the sample rate is set to Triggered, the chart displays assume a sample rate of 1 per second for scaling purposes. Simply read the graphs as triggers per divi- sion instead of seconds per division.

The sample rate sets how often points are added to the storage buffers. All stored traces are sampled at the same rate (and at the same times).

Swept parameters (internal oscillator frequency or Aux Outputs) are syn- chronized with the data acquisition. Swept parameters change once per sample (even if no traces are being stored). The parameter is updated after the data points for each sample are taken. The settling time for each point is thus 1/(sample rate).

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SRS Labs SR850 manual Trace and Scan Menu, Sample Rate
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SR850 specifications

The SRS Labs SR850 is a high-performance audio processor designed to enhance the listening experience across a variety of applications. With its advanced technologies, the SR850 delivers superior sound quality that is particularly noticeable in environments where audio clarity and fidelity are paramount. This device caters to audio professionals, audiophiles, and casual listeners who demand exceptional performance from their audio systems.

One of the standout features of the SR850 is its proprietary SRS 3D Audio technology. This innovative feature creates a more immersive soundstage, allowing users to experience audio as if they were in a live performance setting. By adding depth and dimension, it elevates the listening experience, making music, movies, and games far more engaging.

Additionally, the SR850 incorporates SRS dialog clarity technology, which enhances speech intelligibility in dialogues and vocals. This is particularly beneficial in film and television viewing, where dialogue can sometimes be drowned out by background music or sound effects. With dialog clarity, users can enjoy crystal-clear conversation tracks without adjusting volume levels continuously.

The device also supports various audio formats, ensuring compatibility with a broad range of media. It boasts inputs for both digital and analog sources, allowing connections to various devices such as TVs, laptops, gaming consoles, and more. The versatility of inputs makes the SR850 a convenient addition to any home entertainment system.

Another impressive characteristic of the SR850 is its compact and user-friendly design. The intuitive interface makes it easy for users to adjust settings to their preference, whether they are a novice or an audio expert. The device is equipped with programmable presets, enabling users to store their favorite sound profiles, making switching between settings quick and hassle-free.

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.
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