Dual phase lock-in amplifier (module) model: HB31-HB-292 library number: M98596

According to the demand for miniaturization of weak signal detection instruments in industries, teaching experiments, and other fields, a modular lock-in amplifier series with performance indicators comparable to desktop instruments is available HB-293（V）、HB-293（I）、HB-292（V-1）、HB-292（V-2）、HB-292（I-1）、HB-292（I-2）、HB-298、HB-298-1 Wait. All components are domestically produced modular lock-in amplifiers.

Dual phase lock-in amplifier (module)

Modular lock-in amplifier, usually used as a lock-in amplifier for a specific measurement, simplifies the functions of a general-purpose desktop lock-in amplifier and can be embedded into other measurement instruments for use. However, sometimes users need to use a modular lock-in amplifier with performance comparable to a desktop general-purpose lock-in amplifier when demonstrating solutions for measuring weak voltages or currents. There are no other modular lock-in amplifiers with this function available. HB-292 dual phase lock-in amplifier (module), paired with HB-892-1 or HB-892-2 ultra-low noise voltage amplifier (module) as a signal channel, is a lock-in amplifier module that measures weak voltage signals with comparable performance to a desktop general-purpose lock-in amplifier. In addition, using HB-292 dual phase lock-in amplifier (module), coupled with HB-892-3 or HB-892-24 ultra-low noise current amplifier (module) as the signal channel, a lock-in amplifier module that measures weak current signals with performance comparable to a desktop general-purpose lock-in amplifier.

Combine the HB-292 biphasic lock-in amplifier (module) and HB-892-1 ultra-low noise voltage amplifier (module) to form a performance modular lock-in amplifier for measuring weak voltage signals.

technical indicators

1. Working frequency: 5Hz-10KHz

2. Magnification factors: 10, 20, 50, 100, 200, 500, 1K, 2K, 5K, 10K, 20K, 50K

100K、200K、500K、1M、2M、5M、10M， There are a total of 19 levels

3. Input short-circuit noise voltage: ≤ 2nV/(at 1KHz)

4. Input impedance: 1M Ω//10pf

5. Input signal: 350mV

6. Low pass filter cut-off frequencies: 10KHz, 3KHz, 1KHz, 300Hz, 100Hz, 30Hz, 10Hz, 3Hz

7. Filter cut-off frequency: 0.1Hz, 1Hz, 10Hz, 30Hz, 100Hz, 300Hz, 1KHz, 3KHz

8. Reference signal: waveform: sine wave, square wave, pulse, triangular wave, etc. Periodic signal size: 200mV-3V

9. Phase adjustment: Fine adjustment: 0 ° -100 °

90 ° Step Coarse Adjustment: 0 °, 90 °, 180 °, 270 °

10. Time constants: 10ms, 30ms, 100ms, 300ms, 1s, 3s, 10s, 30s

11. Output components: Vx, Vy

(Corresponding to input voltages Vix=Vx/K, Viy=Vy/K, ViR=VR/K)

12. Communication output component: VAC=VRcos (ω t+φ) [where ω=2 π f, f=10KHz]

13. Harmonic measurement: 1f, 2f, 3f,... 15f

14. Output level: ± 4.5V

15. Output DC drift: 10-3FS/℃

16. Zero bias adjustment range: 20% FS

17. Address control level: TTL level, [1] high level 4V-5V, [0] low level 0-1V,

No need to connect, it is already grounded internally

18. Power supply: ± 9V, HB-892-1:70mA, ripple less than 1mV ± 9V, HB-292:150mA, ripple less than 1mV

19. Volume: 140 * 76 * 35 (unit: mm) * 2 pieces

20. Weight: Approximately 320 grams * 2 pieces