低噪声电流和电压输入
0.5Hz-100kHz参考频率
跟踪带通和交流电网陷波滤波器
10nV或100fA满量程灵敏度
动态储备高达80dB
内参考振荡器
四个A/D输入,两个D/A输出
Signal Channel | |
Inputs |
|
Voltage | Single-ended or differential |
Current | 106 V/A |
Impedance |
|
Voltage | 100 MΩ + 25 pF, AC coupled |
Current | 1 kΩ to virtual ground |
Full-scale sensitivity |
|
Voltage | 100 nV to 500 mV |
Current | 100 fA to 0.5 µA |
Maximum inputs |
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Voltage | 100 VDC, 10 VAC damage threshold, 2 Vpp saturation |
Current | 10 µA damage threshold, 1 µApp saturation |
Noise |
|
Voltage | 7 nV/√Hz at 1 kHz (typ.) |
Current | 0.13 pA/√Hz at 1 kHz (typ.) |
Common Mode |
|
Range | 1 Vp |
Rejection | 100 dB (DC to 1 kHz, degrades by 6 dB/oct above 1 kHz) |
Gain accuracy | 1 % (2 Hz to 100 kHz) |
Gain stability | 200 ppm/°C |
Signal filters | 60 Hz notch, -50 dB (Q=10, adjustable from 45 to 65 Hz) |
Dynamic reserve | LOW (20 dB), 5 ppm/°C (1 µV to 500 mV sensitivity) |
Reference Channel | |
Frequency | 0.5 Hz to 100 kHz |
Input impedance | 1 MΩ, AC coupled |
Trigger |
|
Sine | 100 mV minimum, 1 Vrms nominal |
Pulse | ±1 V, 1 µs minimum width |
Mode | Fundamental or 2nd harmonic (2f) |
Acquisition time | 25 s (1 Hz ref.), 6 s (10 Hz ref.), 2 s (10 kHz ref.) |
Slew rate | 1 decade per 10 s at 1 kHz |
Phase control | 90° shifts, fine shifts in 0.025° steps |
Phase noise | 0.01° rms at 1 kHz (100 ms, 12 dB/oct rolloff time constant) |
Phase drift | 0.1°/°C |
Phase error | Less than 1° above 10 Hz |
Orthogonality* | 90° ± 1° |
Demodulator | |
Stability | 5 ppm/°C (LOW dynamic reserve) |
Time constants |
|
Pre | 1 ms to 100 s (6 dB/octave) |
Post | 1 s, 0.1 s, none (6 dB/octave) |
Offset | Up to 1× full scale (10× on expand) |
Harmonic rejection | -55 dB (band pass filter in) |
Outputs and Interfaces | |
Channel 1 outputs | X (RcosΘ), X Offset, X Noise, R*, R Offset*, X5 (ext. D/A)* |
Channel 2 outputs* | Y (RsinΘ), Y offset, Θ, Y noise, X6 (ext. D/A) |
Output meters | 2 % precision analog meter |
Output LCD | 4-digit LCD display shows same value as the analog meter. |
Output BNC | ±10 V corresponds to full scale input (<1 Ω output impedance) |
X output* | X (RcosΘ), ±10 V, <1 Ω output impedance |
Y output* | Y (RsinΘ), ±10 V, <1 Ω output impedance |
Reference LCD | 4-digit LCD display for reference phase shift or frequency |
X1 to X4 | 4 analog inputs, 13-bit, ±10.24 V |
X5, X6 | 2 analog outputs, 13-bit, ±10.24 V |
Ratio | Ratio output equals 10× signal output divided by the denominator of the input. |
Internal oscillator |
|
Range | 1 Hz to 100 kHz |
Accuracy | 10 % |
Stability | 150 ppm/°C (frequency), 500 ppm/°C (amplitude) |
Distortion | 2 % THD |
Amplitude | 10 mVrms, 100 mVrms, 1 Vrms |
Computer interfaces | RS-232 standard, GPIB optional. All instrument functions can be controlled and read through the interfaces. |
General | |
Power | 35 W, 100/120/220/240 VAC, 50/60 Hz |
Dimensions | (SR510) 17" × 3.5" × 17" (WHL) |
Weight | 12 lbs. (SR510), 16 lbs. (SR530) |
Warranty | One year parts and labor on defects in materials and workmanship |
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