� 频率范围1mHz �?02.4kHz

� �?00dB 的动态保�

� 稳定性为5ppm/�

� 0.01 度的相位分辨�

� 时间常数�?0��s �?0ks�?*24dB倍频程衰减速率�

� 具有自动获取，自动定相，自动存储

� 自动补偿功能

� 合成参考光�

� GPIB 和RS-232 两种接口

技术参数：

电压输入Single-ended or differential

分辨� 2 nV to 1 V

电流输入106 or 108 V/A

输入阻抗电压10 M�� + 25 pF� AC or DC coupled

输入阻抗电流1 k�� 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�?0/60 Hz and 100/120 Hz (Q = 4 )

CMRR100 dB to 10 kHz� decreasing by 6 dB/oct above 10 kHz

动态范� >100 dB (without prefilters)

稳定�?5 ppm/��C

参考通道９�/span>

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 M��� 25 pF

相位分辨�?.01�� front panel� 0.008�� through computer interface

**相位误差<1��

相对相位误差<0.001��

正交�?0�� �� 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�?F� 3F� ... nF to 102 kHz (n < 19�?99)

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

解调器：

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

谐波抑制�?90 dB

时间常数 10 ��s to 30 ks (6� 12� 18� 24 dB/oct rolloff). Synchronous filters available below 200 Hz.

内部振荡器：

范围 1 mHz to 102 kHz

频率精度25 ppm + 30 ��Hz

频率分辨�?? 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 k�� (2 mV resolution)� 50 �� output impedance� 50 mA maximum current into 50 �� 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.)

显示９�/span>

通道1 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.

通道2 (SR830) 4?-digit LED display with 40-segment LED bar graph. Y� ��� 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� 4?-digit LED display

输入和输出：

CH1输出 X� R� X-noise� Aux 1 or Aux 2�?��10 V)� updated at 512 Hz

CH2输出 (SR830) Y� ��� 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�? 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� 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� Provides power to the optional SR550� R552 and SR554 preamps

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