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Anritsu S113C, S332C, S114C, S331C manual In-Band/Out-of-Channel Measurements

Models: S113C S332C S114C S331C

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Chapter 5 Spectrum Analyzer Measurements

In-Band/Out-of-Channel Measurements

The in-band/out-of-channel measurements are those measurements that measure distortion and interference within the system band, but outside of the transmitting channel. These measurements include in-band spurious emissions and adjacent channel power ratio (also known as spectral regrowth). There are stringent regulatory controls on the amount of inter- ference that a transmitter can spill to neighboring channels. In order to determine compli- ance with the allowable level of spurious emissions, the spectrum analyzer needs two parameters to be specified:

￿Measurement channel bandwidth

￿Allowable level of spurious emissions.

Required Equipment

￿Site Master Model S114C or S332C

￿30 dB, 50 Watt, bi-directional, DC –18 GHz, N(m) – N(f), Attenuator

￿Test Port extension cable, Anritsu 15NNF50 – 1.5C

Procedure

Step 1. Using the test port extension cable and 30 dB attenuator connect the Site Master to appropriate transmit test port.

Step 2. Press the ON/OFF key on the Site Master.

Step 3. Press the MODE key.

Step 4. Use the Up/Down arrow key to select the Spectrum Analyzer mode and press

ENTER.

Step 5. Select the center frequency for the channel of interest.

Step 6. Set the frequency span wide enough to include the primary channel and upper and lower channel.

Step 7. Set the following parameters as specified: reference level = 0 dBm

input attenuation level = auto resolution bandwidth =10 kHz video bandwidth =300 Hz

Step 8. Use the limit line and markers to read and compare observed signals to the spec- ified allowable level of in-band spurious emissions for the corresponding chan- nel transmitted frequency.

NOTE: The resolution bandwidth of a spectrum analyzer is determined by the intermediate frequency (IF) filter bandwidth. Site Master, as do conventional spectrum analyzers, traces the shape of the IF filter as it sweeps past a signal. Therefore, if two equal-amplitude signals are very close to each other, the mea- surement result can appear to be one single response because the IF or resolu- tion bandwidth is not small enough to resolve the two signals. Similarly, if two signals are not equal in amplitude but are very close together, the smaller sig- nal may not be seen because it is hidden under the large response.

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Anritsu S113C, S332C, S114C, S331C manual In-Band/Out-of-Channel Measurements
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S113C, S332C, S114C, S331C specifications

Anritsu, a leader in test and measurement solutions, offers a range of handheld tools that cater to the needs of professionals in the RF and microwave industries. Among these tools are the Anritsu S331C, S114C, S332C, and S113C, each designed with unique features and technologies that make them suitable for various applications.

The Anritsu S331C is a Cable and Antenna Analyzer that is particularly valued for its accuracy and ease of use. It operates within a frequency range of 3 MHz to 4 GHz, making it applicable for both wireless and microwave communication systems. One of its standout features is the built-in Time Domain Reflectometry (TDR) function, which allows technicians to pinpoint faults in cables quickly. The S331C's intuitive touch-screen interface ensures seamless operation, while its lightweight design allows for portability in the field.

On the other hand, the Anritsu S114C is a versatile handheld RF power meter that can measure a wide range of power levels and frequencies. Its exceptional measurement accuracy and broad dynamic range make it suitable for various applications, from network testing to maintenance. It supports both peak and average power measurements, providing users with the flexibility to adapt to different testing scenarios. The S114C also features a memory function that allows users to store and recall measurement data easily.

The S332C model is designed for more advanced applications, offering vector network analysis capabilities. Operating within a frequency range of 5 kHz to 4 GHz, it is used for characterizing components such as filters, amplifiers, and cables. The S332C features a high-resolution display and supports automated measurements, making it a powerful tool for engineers involved in the design and validation of RF components.

Lastly, the Anritsu S113C is an excellent choice for professionals requiring a compact and efficient solution for insertion loss and return loss measurements. This analyzer covers a frequency range of 5 kHz to 4 GHz and is especially suited for testing antennas and RF components. The S113C's lightweight design, combined with its user-friendly interface, allows operators to conduct measurements easily in various environments, ensuring high performance and reliability.

In summary, the Anritsu S331C, S114C, S332C, and S113C represent a comprehensive suite of handheld analyzers that cater to diverse needs in the RF and microwave sectors. With features like TDR function, RF power measurements, vector network analysis, and a focus on portability, these instruments are essential tools for professionals looking to enhance their testing capabilities and ensure high-quality network performance.