EMI Receiver KH3935

The KH3935 EMI test receiver is a fully automated test receiver and is the primary tool for EMI testing.

The frequency range is 9kHz--30MHz, which fully satisfies the power line disturbance power test. After the artificial power network is configured, the power terminal disturbance voltage test can be performed. The machine has fast test speed, strong maneuverability, stable performance and convenient test data processing. Etc.

The KH3935 receiver is the first in the country to use the USB interface for data transmission, and supports USB interface external devices, such as printers, mice, keyboards, etc. The machine is equipped with high-speed large-capacity hard disk, which stores data of various external devices and supports plug-in. Use a variety of external test equipment. The software is developed by our company and uses windows as the carrier. Users who are familiar with windows can quickly get started. EMF tester This machine can independently carry out test work without additional control equipment to control it, which fundamentally solves the problem of interference source. The measurement results can be input to the hard disk of the receiver or saved to a floppy disk or directly printed output via a floppy drive or saved using a USB storage device. Detailed measurement reports can be printed directly according to user needs without additional editing.

The measurement receiver fully complies with the requirements of national standard GB/T6113.1-1995 and international standard CISPR16-1.

main feature

1. Perform a rough scan and measure the two curves of the peak and the average; or measure the average or peak.

2. Perform automatic quasi-peak measurement on the frequency points exceeding the standard. You can also observe the dynamic change of the quasi-peak value of a single frequency point. The intuitive graphical energy bar displays the terminal test voltage value and has the maximum value retention function.

3. The limits of different standards can be set and modified arbitrarily, the method is simple and the function is perfect.

4. The instrument can be automatically processed by the conductivity factor instrument according to different accessories.

5, the instrument can be final test, each band to measure the quasi-peak and average of the maximum point; can also be artificially selected for quasi-peak and average final measurement.

6, the instrument can give a test report of the results, the report can be added to the tester's information, you can directly print the written report or save

The electronic version of the report can be output via the USB port, and the report format is a common format that can be transmitted over the network.

7. The software design is more user-friendly, and the upper and lower limits can be adjusted during the test to achieve the best display effect. You can also zoom in on any range to view test data more accurately. A wealth of help information to help users have a deeper understanding of the various functions of the device.

Product parameters

The error given by this instrument is the working error, that is, the error measured under the rated condition.

1. Measuring frequency range: 9kHz ~ 30MHz

2. Frequency resolution: (9kHz ~ 150kHz): 30Hz;

(150kHz to 30MHz): 1kHz

3. Frequency stability: 10 -6

4. Input impedance: 50W

5. Standing wave coefficient: 1.3 (RFATT > 10dB)

6. Test mode: average value quasi-peak peak

7. Terminal voltage measurement range: 0dB ~ 120dB (S / N = 6dB 1mV = 0dB)

8. Terminal voltage measurement error: (under standard operating conditions) ≤ ± 2dB

9. Field strength measurement range: Add the attenuation coefficient of the antenna over the range of the terminal voltage

10. Field strength measurement error: ≤ ± 4dB

11. IF attenuation: not less than 40dB

12. Mirror channel attenuation: not less than 35dB

13. Whole machine passband (-6dB): 200Hz, 9kHz, 120kHz

14. Overload factor: 30dB before detection

After detection, DC amplifier ≥ 12dB

15. Detector time constant

(1) Average value: charge and discharge time constant is less than 1 ms

(2) Quasi-peak: charging time constant 1ms

Discharge time constant 160ms±10ms

16. Head mechanical time constant: 160ms ± 80ms

17. Pulse characteristics

(1) Absolute characteristics: For a pulse signal with a spectral density of 0.316 mV·S repetition frequency of 100 Hz, the error of the electromotive force reading of a sinusoidal signal with a 66 dB rms value shall not be greater than ±1.5 dB.

(2) Relative characteristics:

18. Stray interference suppression: no less than 40dB

19. Shielding effect: no less than 60dB

20. Parasitic signal: no more than 3 points, the level is less than 30dB.

21. Power supply: AC 220V, 50Hz, power consumption is not more than 70W, when the AC voltage changes ±10%, the instrument can still work normally.

22. Scanning mode: scan range, step size, level threshold can be set

23. Operation mode: Fully automatic, manual

24. Display mode: TFT color LCD display

25. Frequency standard display: level and frequency

26. Antenna Correction: Automatic

27. Output mode: 1, with USB interface, can copy test data or test report through mobile hard disk or U disk

2, disk storage

3. Print and output

28. Software: equipped with data reading software

29. Interface: USB interface

30. Can be equipped with a mouse, keyboard and LCD

31. Power supply: 50Hz 220V

32. Dimensions of the instrument: 400mm × 350mm × 200mm

33. Host weight: about 14kg

21. Power supply: AC 220V, 50Hz, power consumption is not more than 70W, when the AC voltage changes ±10%, the instrument can still work normally.

22. Scanning mode: scan range, step size, level threshold can be set

23. Mode of operation: fully automatic, manual

24. Display mode: TFT color LCD display

25. Frequency standard display: level and frequency

26. Antenna Correction: Automatic

27. Output mode 1. With USB interface, test data or test report can be copied by mobile hard disk or USB flash drive.

2, floppy disk storage

3, print and output

28. Software: equipped with data reading software

29. Interface: USB interface

30. Can be equipped with a mouse, keyboard and LCD

31. Power supply: 50Hz 220V

32. Dimensions of the instrument: 400mm × 350mm × 200mm

33. Host weight: about 14kg