당신은 주제를 찾고 있습니까 “stanford research sr830 – Stanford Research System SR830 Repair and Experiments“? 다음 카테고리의 웹사이트 https://ppa.charoenmotorcycles.com 에서 귀하의 모든 질문에 답변해 드립니다: https://ppa.charoenmotorcycles.com/blog. 바로 아래에서 답을 찾을 수 있습니다. 작성자 Gears and Gear 이(가) 작성한 기사에는 조회수 883회 및 좋아요 21개 개의 좋아요가 있습니다.
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d여기에서 Stanford Research System SR830 Repair and Experiments – stanford research sr830 주제에 대한 세부정보를 참조하세요
Talking about a Lock-in Amplifier. Not an expert, but this thing is pretty cool.
Not going too in-depth because, sadly, I’m no \”The Signal Path\”
Thanks to the Marco Reps discord for helping me fix this thing.
Manual with schematics:
http://manuals.repeater-builder.com/te-files/STANFORD%20RESEARCH%20SYSTEMS/STANFORD%20RESEARCH%20SYSTEMS%20SR830%20Operating%20\u0026%20Programming.pdf
stanford research sr830 주제에 대한 자세한 내용은 여기를 참조하세요.
Stanford Research SR830 DSP Dual Phase Lock-In Amplifier …
The SR830 DSP Lock-In Amplifier proves high performance at a reasonable cost. The SR830 simultaneously displays the magnitude and phase of a signal. The …
Source: www.bellnw.com
Date Published: 8/18/2022
View: 900
STANFORD RESEARCH SR830 Datasheet
The SR810 and SR830 have differential inputs with 6 nV/√Hz input noise. The input impedance is 10 MΩ, and minimum full-scale input voltage sensitivity is 2 …
Source: www.testequipmenthq.com
Date Published: 4/1/2021
View: 7550
Stanford Research- Lock-In Amplifier (Model:SR810 & SR830)
Stanford Research- Lock-In Amplifier (Model:SR810 & SR830). By. -. 30/03/2019. 0. 282.
Source: www.ino.com.vn
Date Published: 3/12/2022
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Stanford Research Systems / SRS SR830 for sale $3995.00
Model: Stanford Research Systems / SRS SR830 Condition: Reconditioned … The SR810 Lock-In Amplifier and SR830 Lock-In Amplifier prove high performance at a …
Source: accusrc.com
Date Published: 9/1/2022
View: 6660
SR810 & SR830 Lock In Amplifier – Stanford Research Systems
The SR810 Lock-In Amplifier and SR830 Lock-In Amplifier prove high performance at a reasonable cost. The SR810 and SR830 DSP Lock-In Amplifiers prove high …
Source: www.gmp.ch
Date Published: 3/28/2022
View: 4526
주제와 관련된 이미지 stanford research sr830
주제와 관련된 더 많은 사진을 참조하십시오 Stanford Research System SR830 Repair and Experiments. 댓글에서 더 많은 관련 이미지를 보거나 필요한 경우 더 많은 관련 기사를 볼 수 있습니다.
주제에 대한 기사 평가 stanford research sr830
- Author: Gears and Gear
- Views: 조회수 883회
- Likes: 좋아요 21개
- Date Published: 2021. 12. 26.
- Video Url link: https://www.youtube.com/watch?v=0-pxEyqXQxE
Stanford Research SR830 DSP Dual Phase Lock-In Amplifier, 1 mHz to 102.4 kHz
The SR830 DSP Lock-In Amplifier provides high performance at a reasonable cost. The SR830 simultaneously displays the magnitude and phase of a signal. The instrument utilizes digital signal processing (DSP) to replace the demodulators, output filters, and amplifiers found in conventional lock-ins. The SR830 provides uncompromised performance with an operating range of 1 mHz to 102 kHz and 100 dB of drift free dynamic reserve.
1 mHz to 102.4 kHz frequency range
>100 dB dynamic reserve
5 ppm/°C stability
0.01 degree phase resolution
Time constants from 10 µs to 30 ks (up to 24 dB/oct rolloff)
Auto-gain, -phase, -reserve and -offset
Synthesized reference source
GPIB and RS-232 interfaces
Please see Datasheet for complete details and specifications.
Stanford Research- Lock-In Amplifier (Model:SR810 & SR830)
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The SR810 Lock-In Amplifier and SR830 Lock-In Amplifier provide high performance at a reasonable cost. The SR830 simultaneously displays the magnitude and phase of a signal, while the SR810 displays magnitude only.
Both instruments use digital signal processing (DSP) to replace the demodulators, output filters, and amplifiers found in conventional lock-ins.
SR810 and SR830 Lock-In Amplifiers
1 mHz to 102.4 kHz range
>100 dB dynamic reserve
5 ppm/°C stability
0.01 degree phase resolution
Time constants from 10 µs to 30 ks
(up to 24 dB/oct rolloff)
(up to 24 dB/oct rolloff) Auto-gain, -phase, -reserve and -offset
Reference source
GPIB and RS-232 interfaces
SR810 and SR830 Lock-In Amplifiers
The SR810 Lock-In Amplifier and SR830 Lock-In Amplifier provide high performance at a reasonable cost. The SR830 simultaneously displays the magnitude and phase of a signal, while the SR810 displays magnitude only. Both instruments use digital signal processing (DSP) to replace the demodulators, output filters, and amplifiers found in conventional lock-ins. The SR810 and SR830 provide uncompromised performance with an operating range of 1 mHz to 102 kHz and 100 dB of drift-free dynamic reserve.
Input Channel
The SR810 and SR830 Lock-In Amplifiers have differential inputs with 6 nV/√Hz input noise. The input impedance is 10 MΩ, and minimum full-scale input voltage sensitivity is 2 nV. The input can also be configured for current measurements with selectable current gains of 10 6 and 10 8 V/A. A line filter (50 Hz or 60 Hz) and a 2× line filter (100 Hz or 120 Hz) are provided to eliminate line related interference. However, unlike conventional lock-in amplifiers, no tracking band-pass filter is needed at the input. This filter is used by conventional lock-ins to increase dynamic reserve. Unfortunately, band pass filters also introduce noise, amplitude and phase error, and drift. The DSP based design of these lock-ins has such inherently large dynamic reserve that no tracking band-pass filter is needed.
Extended Dynamic Reserve
The dynamic reserve of a lock-in amplifier at a given full-scale input voltage is the ratio (in dB) of the largest interfering signal to the full-scale input voltage. The largest interfering signal is defined as the amplitude of the largest signal at any frequency that can be applied to the input before the lock-in cannot measure a signal with its specified accuracy.
Conventional lock-in amplifiers use an analog demodulator to mix an input signal with a reference signal. Dynamic reserve is limited to about 60 dB, and these instruments suffer from poor stability, output drift, and excessive gain and phase error. Demodulation in the SR810 Lock-In Amplifier and SR830 Lock-In Amplifier is accomplished by sampling the input signal with a high-precision A/D converter, and multiplying the digitized input by a synthesized reference signal. This digital demodulation technique results in more than 100 dB of true dynamic reserve (no prefiltering) and is free of the errors associated with analog instruments.
Digital Filtering
The digital signal processor also handles the task of output filtering, allowing time constants from 10 µsec to 30,000 s, with a choice of 6, 12, 18 and 24 dB/oct rolloff. For low frequency measurements (below 200 Hz), synchronous filters can be engaged to notch out multiples of the reference frequency. Since the harmonics of the reference have been eliminated (notably 2F), effective output filtering can be achieved with much shorter time constants.
Digital Phase Shifting
Analog phase shifting circuits have also been replaced with a DSP calculation. Phase is measured with 0.01° resolution, and the X and Y outputs are orthogonal to 0.001°.
Frequency Synthesizer
The built-in direct digital synthesis (DDS) source generates a very low distortion (-80 dBc) reference signal. Single frequency sine waves can be generated from 1 mHz to 102 kHz with 4½ digits of resolution. Both frequency and amplitude can be set from the front panel or from a computer. When using an external reference, the synthesized source is phase locked to the reference signal.
Auto Functions
Auto-functions allow parameters that are frequently adjusted to automatically be set by the instrument. Gain, phase, offset and dynamic reserve are each quickly optimized with a single key press. The offset and expand features are useful when examining small fluctuations in a measurement. The input signal is quickly nulled with the auto-offset function, and resolution is increased by expanding around the relative value by up to 100×. Harmonic detection is no longer limited to only the 2F component. Any harmonic (2F, 3F, … nF) up to 102 kHz can now be measured without changing the reference frequency.
Analog Inputs and Outputs
Both instruments have a user-defined output for measuring X, R, X-noise, Aux1, Aux 2, or the ratio of the input signal to an external voltage. The SR830 has a second, user-defined output that measures Y, Θ, Y-noise, Aux 3, Aux 4 or ratio. The SR810 and SR830 both have X and Y analog outputs (rear panel) that are updated at 256 kHz. Four auxiliary inputs (16-bit ADCs) are provided for general purpose use—like normalizing the input to source intensity fluctuations. Four programmable outputs (16-bit DACs) provide voltages from -10.5 V to +10.5 V and are settable via the front panel or computer interfaces.
Internal Memory
The SR810 Lock-In has an 8,000 point memory buffer for recording the time history of a measurement at rates up to 512 samples/s. The SR830 has two 16,000 point buffers to simultaneously record two measurements. Data is transferred from the buffers using the computer interfaces. A trigger input is also provided to externally synchronize data recording.
Easy Operation
The SR810 Lock-In Amplifier and SR830 Lock-In Amplifier are simple to use. All instrument functions are set from the front-panel keypad, and a spin knob is provided to quickly adjust parameters. Up to nine different instrument configurations can be stored in non-volatile RAM for fast and easy instrument setup. Standard RS-232 and GPIB (IEEE-488.2) interfaces allow communication with computers. All functions can be controlled and read through the interfaces.
Resource & Download
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Stanford Research Systems / SRS SR830 for sale $3995.00
The SR810 Lock-In Amplifier and SR830 Lock-In Amplifier provide high performance at a reasonable cost. The SR830 simultaneously displays the magnitude and phase of a signal, while the SR810 displays magnitude only. Both instruments use digital signal processing (DSP) to replace the demodulators, output filters, and amplifiers found in conventional lock-ins. The SR830 provide uncompromised performance with an operating range of 1 mHz to 102 kHz and 100 dB of drift-free dynamic reserve.
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SR810 & SR830 Lock In Amplifier
Description
The SR810 Lock-In Amplifier and SR830 Lock-In Amplifier provide high performance at a reasonable cost.
The SR810 and SR830 DSP Lock-In Amplifiers provide high performance at a reasonable cost. The SR830 simultaneously displays the magnitude and phase of a signal, while the SR810 displays the magnitude only. Both instruments use digital signal processing (DSP) to replace the demodulators, output filters, and amplifiers found in conventional lock-ins. The SR810 and SR830 provide uncompromised performance with an operating range of 1 mHz to 102 kHz and 100 dB of driftfree dynamic reserve.
1 mHz to 102.4 kHz frequency range
>100 dB dynamic reserve
5 ppm/°C stability
0.01 degree phase resolution
Time constants from 10 µs to 30 ks
(up to 24 dB/oct rolloff)
Auto-gain, -phase, -reserve and -offset
Synthesized reference source
GPIB and RS-232 interfaces
Datasheet (PDF file)
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