型号: | Lock-In Amplifiers |
产地: | 美国 |
品牌: | 新势力光电 |
评分: |
|
SR810 and SR830 Lock-In Amplifiers
锁相放大器
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
SR810 and SR830 Lock-In Amplifiers
Signal Channel
Voltage inputs
Single-ended or differential
Sensitivity
2 nV to 1 V
Current input
106 or 108 V/A
Input impedance
Voltage input
10 MΩ + 25 pF, AC or DC coupled
Current input
1 kΩ to virtual ground
Gain accuracy
±1 % (±0.2 % typ.)
Noise
6 nV/√Hz at 1 kHz
0.13 pA/√Hz at 1 kHz (106 V/A)
0.013 pA/√Hz at 100 Hz (108 V/A)
Line filters
50/60 Hz and 100/120 Hz (Q=4)
CMRR
100 dB at 10 kHz, decreasing by 6 dB/oct above 10 kHz
Dynamic reserve
>100 dB (without prefilters)
Stability
<5 ppm/°C
Reference Channel
Frequency range
0.001 Hz to 102.4 kHz
Reference input
TTL or sine (400 mVpp min.)
Input impedance
1 MΩ, 25 pF
Phase resolution
0.01° front panel, 0.008° through computer interfaces
Absolute phase error
<1°
Relative phase error
<0.001°
Orthogonality
90° ± 0.001°
Phase noise
Int. reference
Synthesized, <0.0001° rms at 1 kHz
Ext. reference
0.005° rms at 1 kHz, 100 ms, 12 dB/oct
Phase drift
<0.01°/°C below 10 kHz,
<0.1°/°C, 10 kHz to 100 kHz
Harmonic detection
2F, 3F, ... nF to 102 kHz (n < 19,999)
Acquisition time
(2 cycles + 5 ms) or 40 ms, whichever is greater
Demodulator
Stability
Digital outputs and display: no drift. Analog outputs: <5 ppm/°C for all dynamic reserve
settings.
Harmonic rejection
-90 dB
Time constants
10 μs to 30 ks (6, 12, 18, 24 dB/oct rolloff). Synchronous filters available below 200 Hz.
Internal Oscillator
Range
1 mHz to 102 kHz
Accuracy
25 ppm + 30 μHz
Frequency resolution
4? digits or 0.1 mHz, whichever is greater
Distortion
-80 dBc (f <10 kHz), -70 dBc (f >10 kHz) @ 1 Vrms amplitude
Amplitude
0.004 to 5 Vrms into 10 kΩ (2 mV resolution), 50 Ω output impedance, 50 mA maximum
current into 50 Ω
Amplitude accuracy
1 %
Amplitude stability
50 ppm/°C
Outputs
Sine, TTL (When using an external reference, both outputs are phase locked to the external
reference.)
Displays
Channel
4?-digit LED display with 40-segment LED bar graph. X, R, X-noise, Aux 1 or Aux 2. The
display can also be any of these quantities divided by Aux 1 or Aux 2.
Channel 2 (SR830)
4?-digit LED display with 40-segment LED bar graph. Y, Θ, Y-noise, Aux 3 or Aux 4. The
display can also be any of these quantities divided by Aux 3 or Aux 4.
Offset
X, Y, R can be offset up to ±105 % of full scale.
Expand
X, Y, R can be expanded by 10× or 100×.
Reference
4?-digit LED display
Inputs and Outputs
CH1 output
±10 V output of X, R, X-noise, Aux 1 or Aux 2. Updated at 512 Hz.
CH2 output (SR830)
±10 V output of Y, Θ, Y-noise, Aux 3 or Aux 4. Updated at 512 Hz.
X, Y outputs
In-phase and quadrature components
(rear panel)
(±10 V), updated at 256 kHz
Aux. A/D inputs
4 BNC inputs, ±10 V, 1 mV resolution, sampled at 512 Hz
Aux. D/A outputs
4 BNC outputs, ±10 V, 1 mV resolution
Sine Out
Internal oscillator analog output
TTL Out
Internal oscillator TTL output
Data buffer
The SR810 has an 8k point buffer. The SR830 has two 16k point buffers. Data is recorded at
rates to 512 Hz and read through the computer interfaces.
Trigger In (TTL)
Trigger synchronizes data recording
Remote pre-amp
Provides power to the optional SR550, SR552 and SR554 preamplifiers
General
Interfaces
IEEE-488.2 and RS-232 interfaces standard. All instrument functions can be controlled and
read through IEEE-488.2 or RS-232 interfaces.
Power
40 W, 100/120/220/240 VAC, 50/60 Hz
Dimensions
17" × 5.25" × 19.5" (WHL)
Weight
23 lbs.
Warranty
One year parts and labor on defects in materials and workmanship
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