电压输入

Single-ended or differential

分辨率

 2 nV to 1 V

电流输入

10⁶ or 10⁸ V/A

输入阻抗电压

10 MΩ + 25 pF, AC or DC coupled

输入阻抗电流

1 kΩ to virtual ground

增益精度

±1 % (±0.2 % typ.)

噪声 (typ.)  

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)

线性滤波

50/60 Hz and 100/120 Hz (Q = 4 )

CMRR

100 dB to 10 kHz, decreasing by 6 dB/oct above 10 kHz

动态范围 

>100 dB (without prefilters)

稳定性

 <5 ppm/°C

频率范围

0.001 Hz to 102.4 kHz

参考输入

TTL or sine (400 mVpp min.)

输入阻抗

1 MΩ, 25 pF

相位分辨率

0.01° front panel, 0.008° through computer interface

绝对相位误差

<1°

相对相位误差

<0.001°

正交性

90° ± 0.001°

相位噪声

Internal ref. Synthesized, <0.0001° rms at 1 kHzExternal ref. 0.005° rms at 1 kHz (100 ms time constant, 12 dB/oct)

相位漂移

 <0.01°/°C below 10 kHz, <0.1°/°C above 10 kHz

谐波检测

2F, 3F, ... nF to 102 kHz (n < 19,999)

收集时间

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

稳定性

Digital outputs and display: no drift Analog outputs: <5 ppm/°C for all dynamic reserve settings

谐波抑制器

-90 dB

时间常数 

10 μs to 30 ks (6, 12, 18, 24 dB/oct rolloff). Synchronous filters available below 200 Hz.

范围

1 mHz to 102 kHz

频率精度

25 ppm + 30 μHz

频率分辨率

4 1/2 digits or 0.1 mHz, whichever is greater

失真        

-80 dBc (f <10 kHz), -70 dBc(f >10 kHz) @ 1 Vrms amplitude

振幅

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.)

通道1

4 1/2 -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.

通道2

(SR830) 4 1/2 -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.

补偿

X, Y, R can be offset up to ±105 % of full scale.

放大倍率

X, Y, R can be expanded by 10× or 100×.

参考

4 1/2 -digit LED display

CH1输出

X, R, X-noise, Aux 1 or Aux 2,(±10 V), updated at 512 Hz

CH2输出

(SR830) Y, θ, Y-noise, Aux 3 or Aux 4,(±10 V), updated at 512 Hz

X, Y输出

In-phase and quadrature components (rear panel) (±10 V), updated at 256 kHz.

Aux. A/D inputs

4 BNC inputs, 16-bit, ±10 V,1 mV resolution, sampled at 512 Hz

Aux. D/A outputs 

4 BNC outputs, 16-bit, ±10 V, 1 mV resolution 

正弦

Internal oscillator analog output

TTL输出

Internal oscillator TTL output

数据缓冲器 

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.

触发输入 (TTL)  

Trigger synchronizes data recording

远程放大器 

Provides power to the optional SR550, R552 and SR554 preamps

连接口  

IEEE-488.2 and RS-232 interfaces standard. All instrument functions can be controlled and read through IEEE-488.2 or RS-232 interfaces.