Rear Panel

REAR PANEL BNC CONNECTORS

AUX IN

AUX OUT

X

Y

11

MONITOR OUT

22

33

TRIG IN

TTL OUT

44

AUX IN 1-4 (A/D Inputs)

These are auxiliary analog inputs which can be digitized by the SR850. The range is -10V to +10V and the resolution is 16 bits (1/3 mV). The input impedance is 1 MΩ.

These inputs may be displayed and stored as traces on the displays. The inputs are sampled at the scan sample rate, which may be as fast as 512 Hz. These inputs allow signals other than the lock-in outputs to be acquired and stored. Furthermore, complex quantities such as X/Aux1 (ratio) may be acquired and stored directly as trace quantities.

AUX OUT 1-4 (D/A Outputs)

These are auxiliary analog outputs. The range is -10V to +10V and the resolution is 1 mV. The output impedance is <1Ω and the output current is limited to 10 mA.

These outputs may be programmed from the front panel or via the computer interfaces. They may be set to fixed voltages or they may be programmed to sweep between two voltages. Sweeps may be either linear or logarithmic. When sweeping, the outputs change at the sample rate and the sweep

time is the scan length. Output voltage sweeps are coordinated with the data acquisition. Sweeps start and stop with the [START/CONT] and [PAUSE/RESET] keys. Pausing data acquisition will pause an Aux Out sweep. Resetting the data buffer will reset a sweeping Aux Out to its starting value.

X and Y

The X and Y lock-in outputs are always available at these connectors. The bandwidth of these out- puts is 100 kHz. A full scale input signal will gener- ate ±10V at these outputs. The output impedance is <1Ω and the output current is limited to 10 mA.

These outputs are affected by the X and Y offsets and expands. The actual outputs are

X Output = (X/sensitivity - offset)xExpandx10V Y Output = (Y/sensitivity - offset)xExpandx10V

where the offset is a percentage of full scale and the expand is an integer from 1 to 256. The offsets and expand are set in the OUTPUT/OFFSET menu.

MONITOR OUT

This BNC provides a buffered output from the signal amplifiers and prefilters. This is the signal just before the A/D converter and PSD. The output impedance is <1Ω and the output current is limited to 10 mA.

The gain from the signal input to the monitor output is the overall gain minus the dynamic reserve minus 3dB. The overall gain is specified in dB in the Sensivitiy menu box (in the Gain menu). The actual dynamic reserve is shown in the moni- tor settings display. For example, if the sensitivity is 10 mV, the gain is 60dB. If the dynamic reserve is 21dB, then the gain from the input to the monitor output is 60-21-3=36dB or a gain of 63. A 10 mV (rms) input will result in a .63 Vrms or.9 Vpk output. The gain is only accurate to about 1.5dB or 20%.

This output is useful for determining the cause of input overloads and the effects of prefiltering. However, because the analog gain never exceeds 2000, very small signals may not be amplified enough to viewed at the monitor output.

4-26

Page 107 Page 109
Page 108
Image 108
SRS Labs SR850 manual Rear Panel BNC Connectors, AUX in 1-4 A/D Inputs, AUX OUT 1-4 D/A Outputs, Monitor OUT
Page 107 Page 109

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.
Top Page Image Contents