Signal Channel
Voltage Input Mode Single-ended or Differential
Full-scale sensitivity 1 nV to 5 V in 1-2-5 sequence
Current gain 106V/A
Input Impedance
Voltage 10 MΩ//10 pF, AC or DC coupled
Current 1 kΩ to virtual ground
C.M.R.R >70 dB to 10 kHz,decreasing by 6 dB/oct above 10 kHz
Dynamic reserve >120 dB
Gain accuracy 0.5% standard, 2% max.
Voltage noise 5 nV/√ Hz at 997 Hz
Reference channel
Inputs
Frequency range 1 uHz to 100/500 kHz
Reference Input TTL or Sine
Input impedance 10 MΩ
Square reference level VIH>3V, VIL<0.5V
Sine reference signal >2 Hz
>400 mVpp
Phase
Resolution 1udeg
Absolute phase error <1deg
Relative phase error <0.001deg
Drift
<0.01 deg/℃ below 10 kHz
<0.1 deg/℃ above 10 kHz
Harmonic detection 2F, 3F, ...nF to 100/500 kHz (n<65,535)
Acquisition time
Internal reference instantaneous acquisition
External reference (3 cycles + 5 ms) or 40 ms,whichever is larger
Demodulator
Number of demodulators 8
Stability
Digital Output No zero drift for all settings
Display No zero drift for all settings
Analog Outputs <5 ppm/℃ for all dynamic reserve settings
Harmonic Rejection -90 dB
Time constant 1 us to 3 ks, 6, 12, 18, 24,30,36,42 ,48dB/oct rolloff
Synchronization Filter Available below 1 kHz(18,24,30,36,42,48 dB/oct rolloff)
Signal Generator
Frequency
Range 1 uHz to 100/500 kHz
Accuracy 2 ppm + 10 uHz
Resolution 1 uHz
Distortion -70 dBc
Amplitude 100 uVrms to 5 Vrms (resolution 10 uVrms)
Tolerance 0.5%
Temperature stability 100 ppm/°C
Sine Output Sine signal，output impedance 50 Ω
TTL Synchronous Output 5V TTL/CMOS level, output impedance 200 Ω
AUX Inputs and Outputs
CH 1 and CH 2
Function X,Y,R,θ and harmonics
Amplitude ±10 V
Drive Current ±30mA max
AUX Inputs
Function 2-channel inputs
Amplitude ±10 V, 1 mV resolution
Impedance 1 MΩ
Multi-Channel System Parameters Communication Interface
RS-232 Standard 9-array RS-232 female socket
USB2.0 USB 2.0 high speed communication interface
Enternet 1 Gbps Gigabit network communication interface
Other
Power Requirements
Voltage 220~240 VAC (110~120 VAC optional)
Frequency 50 Hz / 60 Hz
Power 50 W to 200 W (Increase power with additional channels)
Power supply noise rejection 70 dB@1 MHz
