LI5640 (1mHz to 100kHz, 2nV Full-scale Multifunction Digital Lock-in Amplifier (Multifunction Type) with Phase Stability 0.01°/°C, Gain Stability ±100ppm/°C, Time Constant (at Minimum) 10µs and Built-in Oscillator)

产品特点

• Line-up of two products
  • There are two models available for the product, namely the multi-functional and fully equipped digital lock-in amplifier LI 5640 and the economic digital lock-in amplifier LI 5630 with the same basic performance but of simpler functional line-up. Both models are of two-phase type
• High stability
  • The amplifier features high stability and low drift designs in which all processes have been digitized except for the preamplifier used for input. Zero output drift was reduced to miniscule levels in the high sensitivity regions. Phase stability is 0.01°/°C and gain stability is ±100 ppm/°C. This high stability has formed the backbone for high resolution of 4½ digits and the phase noise of 0.001°. These features enable very reliable small signal measurements
  • Voltage input
    • Basic gain accuracy: ±0.5%
    • Basic gain stability: ±100ppm/°C
  • Current input (LI5640)
    • Basic current accuracy: ±1%
    • Basic gain stability: ±150ppm/°C
  • Phase sensitive detector
    • Basic phase stability: 01°/°C
  • Internal Oscillator
    • Frequency range: 5mHz to 105 kHz
    • Basic accuracy: ±30ppm
• Prompt and smooth responses
  • Prompt and smooth measurement responses
    • The minimum time constant for the wave detection part is 10µs. D/A conversion of direct current output is possible with high speed and accuracy, at up to 256k samples/sec and 16 bit. Responses are prompt not only for X-Y but also for R-θ output. Up to 16k samples/second is possible for recording with digital data memory. Moreover, the amplifier features the new synchronized filter, allowing a moving average to be maintained with signal period. Ripples in measurement are significantly reduced, even with small time constants. In addition, the synchronized filter can be used in all frequency ranges. We invite everyone to enjoy fully the prompt and smooth responses
  • Instantaneous responses when settings are switched
    • Even when the settings for phase and sensitivity are changed during a measurement, the latest value is converted to the value for the new setting, allowing instantaneous responses for measurement. Even when the time constant is large, you do not need to wait for the time constant response
• Equipped with analog meter to help an user grasp the measurement intuitively
  • LI5630: 1 analog meter
  • LI5640: 2 analog meters
• Built-in oscillator (LI5640)
• Versatile interfaces: GPIB and RS232 are provided as standard