Spectrum Analyzer is very useful in planning and testing radio frequency circuits. Spectrum Analyzer prices are still quite expensive ranging from three hundred million to one billion rupiah, so this is one of the problems for companies that need a lot of Spectrum Analyzer measuring devices. The purpose of making client server software systems for Spectrum Analyzer measuring devices is to improve the competitiveness of measuring instruments, by adding value to these gauges. The method used is to add software so that the Spectrum Analyzer can be used by many users (operators) at the same time while being able to set different parameters, so that logically the software system can duplicate the number of measuring devices. Spectrum Analyzer has the main function to measure the transmission signal, in the world of satellite communication this tool is often used for pointing antennas (directing the satellite dish to the satellite to be used). By utilizing this measuring instrument, it is easy for a technician to determine whether the antenna is pointing to the correct satellite. In the Spectrum Analyzer we can see the pattern of the signal received so we can make a reference (reference) for each existing satellite, generally people use beacon signals to distinguish satellites from one another. The difficulty in directing the antenna to the correct satellite is because the location of the satellite orbits in space is very close together, therefore we need a Spectrum Analyzer to monitor the received signal. In addition to these needs, Spectrum Analyzer is also widely used to test the performance of satellite transmission equipment and quality & control. For example, to measure Gain Flatness (Product Gain), Product Intermodulation (Conditions where an ODU converts 2 input signals), Spourius (Noise produced when amplifying a signal). To see some of the conditions above requires a Spectrum Analyzer and of course the ability of the operator to use it. With this tool called Spectrum Analyzer we can find out the parameters associated with high frequency waves including:

Square wave shape
Toothed wave form
Form of direct current voltage
Form of alternating current voltage
Spectrum Analyzer has the main function to measure the transmission signal, in the world of satellite communication, this tool is often used for pointing antennas to direct the satellite dish to the satellite to be used. By utilizing this measuring instrument, it is easy for a technician to determine whether the antenna is pointing to the correct frequency. In the spectrum analyzer we can see the pattern of the received signal so that we can make a reference reference for each available frequency. The difficulty in directing the University of North Sumatra antenna to the correct satellite is because the location of the satellite orbits in the sky is very close together, therefore we need a Spectrum Analyzer to monitor the received signal. In addition, Spectrum Analyzer is also widely used to test the performance of satellite transmission equipment and quality control. For example, to measure Gain Flatness Gain Flatness, Product Intermodulation Conditions where an ODU converts 2 input signals, Spourius Noise is generated when the signal is amplified. To see some of the conditions above it requires a Spectrum Analyzer and of course the ability of the operator to use it.
Spectrum analyzer frequency settings
To adjust the frequency of the spectrum analyzer, there are two choices that can be made. These are independent of each other. The first selection is the center of frequency. Set the center frequency of the scale with the selected value. This is usually done where the signal to be monitored will be located. In this way, the main signal and side area can be monitored. The second choice that can be made on the analyzer is the span, or the breadth of the area of ​​the two sides of the center of the frequency to be seen or monitored. This span button is to determine the width of the frequency to be seen. For example: freq is set at 210.25 MHz and Span at 10 MHz means that the screen will display a frequency of 210.25 MHz at the midpoint, the left screen border is 205.25 MHz and the right screen limit is at 215.25 MHz. This span setting will automatically form a grid of grid lines for reading. But not infrequently the grid lines are removed to clean the screen. Universitas Sumatera Utara Spectrum Analyzer is a measuring instrument that is very expensive so there are several things that must be considered in the use and maintenance of the spectrum analyzer itself among others: - There must be no input voltage at the input RF signal max: 0 Volt - Parameter setup in accordance with the signal criteria to be measured. - Try to avoid water, fire and chemicals that can spill this tool - Perform a calibration so that the spectrum is accurate in measuring.
Measurements that can be done using a spectrum analyzer (Spectrum Analyzer) are generally measuring modulation, distortion, and can also be used to measure noise levels. To measure the quality of the modulation it is very important to ensure that the system on your device is working properly, as well as the information being transmitted correctly and correctly. To understand the contents of an important spectrum, especially in communication where there is very limited bandwidth in each measurement. As well as the amount of power transmitted for example such as, to overcome interference on the channels that exist in the wireless system is one of the keys to communication in measurement.
 
In a communication system, it is very important to measure distortion on both the receiver and transmitter sides. An excessive "harmonic distortion" signal at a transmitter output can cause band interference in other communications. please note Pre-amplification is the receiver stage which must be free from intermodulation distortion in order to prevent signal crosstalk. For example, intermodulation on a cable TV operator that moves down the path of a distribution system then distorts other channels on the same cable.
 in a certain situation you might want to measure the signal noise on a cable, on every active circuit or device that produces noise. Tests such as the Noise Figure are important for the device performance characteristics that contribute to overall system noise. All measurements on the spectrum analyzer, the most important thing is to understand the operation of the spectrum analyzer and the performance of the Spectrum Analyzer that is needed as your specific measurement and testing specification. If you understand what you want to measure, then you can choose what type of measuring instrument do you need to take detailed measurements? all of that in order to get the results of measurements and analysis, evaluation in the future can produce the right data.

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