Frequency coverage range

Normal working conditions

a. Environmental temperature: 0 ℃ to+40 ℃;

b. Relative humidity:<80%;

c. Power supply: 220V ± 22V, 50Hz ± 2.5Hz.

d. Power consumption: approximately 25W;

e. Net weight: approximately 7kg;

f. Dimensions: (l × b × h) mm: 380 × 132 × 280.

Features:

Optimized test circuit design for smaller residual values

The high-frequency signal adopts digital tuner and frequency locking technology

3 LED digital readout quality factor, manual/automatic range switching

4. Automatically scan the resonance point of the tested component, set and lock the standard frequency with a single key, greatly improving the testing speed

Instructions for use

High frequency Q-meter is a versatile impedance measurement instrument. In order to improve measurement accuracy, in addition to minimizing residual parameters in the Q-meter test circuit and improving the frequency response of the coupling circuit, it is also necessary to master the correct testing methods and residual parameter correction methods.

1. Testing precautions

a. This instrument should be placed horizontally;

b. If you need to measure accurately, please turn on the power and preheat for 30 minutes;

c. When adjusting the main capacitor or digital switch of the main capacitor, please adjust slowly when approaching the resonance point;

d. The wiring between the tested component and the test circuit terminal should be as short and thick as possible, and should have good and reliable contact to reduce measurement errors caused by the resistance and distribution parameters of the wiring;

e. Do not place the test piece directly on the top of the panel, more than one centimeter away from the top. If necessary, use low loss insulation materials such as polystyrene to make padding;

f. Hands should not be close to the test piece to avoid measurement errors caused by human induction. For shielded test pieces, the shielding cover should be connected to the terminal at the low potential end.

2. Measurement of Q value of high-frequency coil (basic measurement method)

Inductance:

Coil number test frequency Q value distribution capacitance p inductance value

9 100KHz 98 9.4 25mH

8 400KHz 138 11.4 4.87mH

7 400KHz 202 16 0.99mH

6 1MHz 196 13 252μH

5 2MHz 198 8.7 49.8μH

4 4.5MHz 231 7 10μH

3 12MHz 193 6.9 2.49μH

2 12MHz 229 6.4 0.508μH

1 25MHz，50MHz 233，211 0.9 0.125μH