Technical Information
Transmitting power detection of micro-power (short-range) radio transmitting equipment
[ 12-23-2024 ]
The detection methods of the transmission power of micro-power (short-range) radio transmission equipment mainly include the following:
1. Spectrum analysis method
Use a spectrum analyzer to test the micro-power radio transmission equipment, and observe the spectrum diagram to determine whether the equipment is transmitting radio within the specified frequency range, and measure its transmission power. The spectrum analyzer can display the frequency distribution and power size of the signal, so as to determine whether the transmission power of the equipment meets the specified standards.
2. RF power test method
Use an RF power tester to test the micro-power radio transmission equipment and directly measure the RF power output of the equipment. This method can accurately measure the transmission power of the equipment and determine whether it meets the relevant standards. RF power testers usually have high accuracy and stability, and are suitable for power measurement of various radio transmission equipment.
3. Comprehensive tester measurement method
Use a radio comprehensive tester (such as CMS54, etc.) for measurement. This type of tester usually contains multiple functional modules such as RF signal source, modulation signal source, frequency meter, power meter, etc., which can comprehensively test the performance of radio transmission equipment. When measuring the transmission power, just connect the device to be tested to the corresponding port of the tester, and set and measure according to the operating steps of the tester.
4. Through-type power meter measurement method
The through-type power meter uses a coupling device (such as a directional coupler, coupling loop, etc.) to couple a part of the power from the transmitted power in a certain proportion and send it to the power meter for measurement. This method can measure the actual transmission power of the transmitting device and determine whether the transmitting device matches the antenna feed system. When measuring, it is necessary to place the through-type power meter between the transmitting device and the antenna feed system, and then read the indication value of the power meter and multiply it by the proportional coefficient to obtain the transmission power.
5. Other precautions
When measuring the transmission power, it is necessary to pay attention to the electromagnetic interference of the test environment to avoid the influence of external factors on the measurement results.
The test instrument should be calibrated before measurement to ensure the accuracy of the measurement results.
Select the appropriate test instrument and test method according to the frequency range and transmission power size of the device to be tested.
During the measurement process, the test instrument should be operated strictly in accordance with the operating manual and test standards to avoid measurement errors caused by improper operation.
In summary, the detection methods of the transmission power of micro-power (short-distance) radio transmitting equipment include spectrum analysis, RF power test, comprehensive tester measurement, and through-type power meter measurement. In practical applications, appropriate test methods and test instruments should be selected for measurement based on the specific conditions of the device under test and test requirements.
1. Spectrum analysis method
Use a spectrum analyzer to test the micro-power radio transmission equipment, and observe the spectrum diagram to determine whether the equipment is transmitting radio within the specified frequency range, and measure its transmission power. The spectrum analyzer can display the frequency distribution and power size of the signal, so as to determine whether the transmission power of the equipment meets the specified standards.
2. RF power test method
Use an RF power tester to test the micro-power radio transmission equipment and directly measure the RF power output of the equipment. This method can accurately measure the transmission power of the equipment and determine whether it meets the relevant standards. RF power testers usually have high accuracy and stability, and are suitable for power measurement of various radio transmission equipment.
3. Comprehensive tester measurement method
Use a radio comprehensive tester (such as CMS54, etc.) for measurement. This type of tester usually contains multiple functional modules such as RF signal source, modulation signal source, frequency meter, power meter, etc., which can comprehensively test the performance of radio transmission equipment. When measuring the transmission power, just connect the device to be tested to the corresponding port of the tester, and set and measure according to the operating steps of the tester.
4. Through-type power meter measurement method
The through-type power meter uses a coupling device (such as a directional coupler, coupling loop, etc.) to couple a part of the power from the transmitted power in a certain proportion and send it to the power meter for measurement. This method can measure the actual transmission power of the transmitting device and determine whether the transmitting device matches the antenna feed system. When measuring, it is necessary to place the through-type power meter between the transmitting device and the antenna feed system, and then read the indication value of the power meter and multiply it by the proportional coefficient to obtain the transmission power.
5. Other precautions
When measuring the transmission power, it is necessary to pay attention to the electromagnetic interference of the test environment to avoid the influence of external factors on the measurement results.
The test instrument should be calibrated before measurement to ensure the accuracy of the measurement results.
Select the appropriate test instrument and test method according to the frequency range and transmission power size of the device to be tested.
During the measurement process, the test instrument should be operated strictly in accordance with the operating manual and test standards to avoid measurement errors caused by improper operation.
In summary, the detection methods of the transmission power of micro-power (short-distance) radio transmitting equipment include spectrum analysis, RF power test, comprehensive tester measurement, and through-type power meter measurement. In practical applications, appropriate test methods and test instruments should be selected for measurement based on the specific conditions of the device under test and test requirements.