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锁相放大器

锁相放大器
  • 型号SRS
  • 品牌

详细描述

  SR810单相 SR830双相数字锁相放大器


1mHz-102kHz频率范围 10ms-30ks时间常数
100dB动态储备(不加前置滤波器)      6, 12, 18, 24dB/倍频程衰减速率
自动增益,自动相位,自动动态储备     谐波检测(2F,3F...nF)
数字解调器没有非线性   GPIBRS-232接口
 
 
Specifications
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 (10
6 V/A)
0.013 pA/√Hz at 100 Hz (10
8 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
4½ 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
4½-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)
4½-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
4½-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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