SR850 DSP LOCK-IN AMPLIFIER

SPECIFICATIONS

SIGNAL CHANNEL

 

Voltage Inputs

Single-ended (A) or differential (A-B).

Current Input

106 or 108 Volts/Amp.

Full Scale Sensitivity

2 nV to 1 V in a 1-2-5-10 sequence (expand off).

Input Impedance

Voltage: 10 MΩ+25 pF, AC or DC coupled.

 

Current: 1 kΩ to virtual ground.

Gain Accuracy

±1% from 20°C to 30°C (notch filters off), ±0.2% typical.

Input Noise

6 nV/Hz at 1 kHz (typical).

Signal Filters

60 (50) Hz and 120(100) Hz notch filters (Q=4).

CMRR

100 dB at 10 kHz (DC Coupled), decreasing by 6 db/octave above 10 kHz

Dynamic Reserve

Greater than 100 dB (with no signal filters).

Harmonic Distortion

<-90 dB to 10 kHz, <-80 dB to 100 kHz.

REFERENCE CHANNEL

 

Frequency Range

1 mHz to 102 kHz

Reference Input

TTL (rising or falling edge) or Sine.

 

Sine input is1 MΩ, AC coupled (>1 Hz). 400 mV pk-pk minimum signal.

Phase Resolution

0.001°

Absolute Phase Error

<1°

Relative Phase Error

<0.001°

Orthogonality

90° ± 0.001°

Phase Noise

External synthesized reference: 0.005° rms at 1 kHz, 100 ms, 12 dB/oct.

 

Internal reference: crystal synthesized, <0.0001° rms at 1 kHz.

Phase Drift

<0.01°/°C below 10 kHz

 

<0.1°/°C to 100 kHz

Harmonic Detect

Detect at Nxf where N<32767 and Nxf<102 kHz.

Acquisition Time

(2 cycles + 5 ms) or 40 ms, whichever is greater.

DEMODULATOR

 

Zero Stability

Digital displays have no zero drift on all dynamic reserves.

 

Analog outputs: <5 ppm/°C for all dynamic reserves.

Time Constants

10 µs to 30 s (reference > 200 Hz). 6, 12, 18, 24 dB/oct rolloff.

 

up to 30000 s (reference < 200 Hz). 6, 12, 18, 24 dB/oct rolloff.

 

Synchronous filtering available below 200 Hz.

Harmonic Rejection

-90 dB

INTERNAL OSCILLATOR

 

Frequency

1 mHz to 102 kHz.

Frequency Accuracy

25 ppm + 30 µHz

Frequency Resolution

5 digits or 0.1 mHz, whichever is greater.

Frequency Sweeps

Linear and Log.

Distortion

f<10 kHz, below -80 dBc. f>10 kHz, below -70 dBc.1 Vrms amplitude.

Output Impedance

50 Ω

Amplitude

4 mVrms to 5 Vrms (into a high impedance load) with 2 mV resolution.

 

(2 mVrms to 2.5 Vrms into 50Ω load).

Amplitude Accuracy

1%

Amplitude Stability

50 ppm/°C

Outputs

Sine output on front panel. TTL sync output on rear panel.

 

When using an external reference, both outputs are phase locked to the

 

external reference.

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SRS Labs manual SR850 DSP LOCK-IN Amplifier Specifications, Signal Channel, Reference Channel, Demodulator

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.