Rear Panel

TRIG IN

This TTL input may be used to trigger data sam- ples and/or to start data acquisition. When the sample rate is set to Trigger, samples are record- ed whenever there is a rising edge at the Trigger input. The maximum sample rate is 512 Hz. If the Trigger Starts is selected (in the AUX menu), then a rising edge will have the same effect as pressing the [START/CONT] key. Frequency and Aux Output sweeps will also start with this trigger. If the sample rate is internally set, then samples are recorded at the programmed sample rate. If the sample rate is Trigger, then samples are recorded at every subsequent trigger. (The first trigger starts the scan and takes the first data point, subsequent triggers record the rest of the data points.)

TTL OUT

This output is the TTL sync output for the internal oscillator. The output is a square wave whose edges are linked to the sine wave zero crossings. This is useful when the sine output amplitude is small and a synchronous trigger is required (to a scope for example). This output is active even when locked to an external reference.

PREAMP CONNECTOR

This 9 pin "D" connector provides power and con- trol signals to external preamplifiers such as the SR550 and SR552. The power connections are described below.

Pin Voltage

1+20V

2+5V

6-20V

7Signal Ground

8Ground

USING SRS PREAMPS

When using either the SR550 or SR552, connect the power cable (standard 9 pin D connectors) from the preamp to the rear panel preamp connec- tor on the SR850. Use BNC cables to connect the A output from the preamp to the A input of the SR850. The B output from the preamp (preamp ground) may be connected to the B input of the SR850. In this case, use A-B as the input configu- ration. Be sure to twist the A and B cables so that there is no differential noise pickup between the cables.

The SR550 and SR552 are AC coupled from 1 Hz to 100 kHz. The SR550 has an input impedance of 100 MΩ, the SR552 has 100 kΩ. Set the SR850 to AC coupled since the signal must be above 1 Hz.

The SR850 does NOT compensate for the gain of the preamp. The SR850 sets both preamps to their maximum gains. Measurements made by the SR850 with a preamp need to be divided by the gain of the preamp. The SR550 has a gain of 10 and the SR552 has a gain of 100.

Make sure that the preamp is at least 3 feet from the SR850 to avoid excess interference from the video display. Do not bring the preamp cables near the CRT.

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SRS Labs SR850 manual Using SRS Preamps, Trig, Ttl Out, Preamp Connector
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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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