Chapter 2 Getting Started

The battery status can also be checked by pressing the SYS key and the STATUS soft key. The Status table will display the remaining battery charge as a percent, as shown below.

STATUS

OSL CALIBRATION

FREQUENCY = 2.0 – 1000 MHz

CAL TEMPERATURE (24–54￿C)

CURRENT TEMPERATURE = 38￿ C

BATTERY CHARGE = 75%

PRESS ESCAPE TO CONTINUE

Figure 2-2. Example Status Table Display

Once all the power has drained from the battery, the Site Master display will fade. At this point, your Site Master will switch itself off and the battery will need to be recharged.

Discharging the NiMH Battery

The NiMH battery will last longer and perform better if allowed to completely discharge before recharging. For maximum battery life, it is recommended that the NiMH battery be completely discharged and recharged once every three months.

To discharge the battery, leave the Site Master switched on until the battery is drained. The Site Master will display a LOW BATT message and an audio warning when the battery be- gins to run low. Allow the battery to fully discharge until the Site Master switches itself off.

NOTE:

Do not attempt to discharge the battery by any other means. Never short-circuit the battery terminals.

Battery Life

It is normal for NiMH batteries to self-discharge during storage. To minimize battery dis- charge during storage, it is recommended that the battery be removed from the Site Master if the Site Master is not to be used for a long period of time.

It is normal for NiMH battery to degrade to 80% of original capacity after 12 months of continuous use.

The battery can be charged and discharged 300 to 500 times, but it will eventually wear out. The battery may need to be replaced when the operating time between charging is notice- ably shorter than normal.

Important Battery Information

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Anritsu S251B manual Discharging the NiMH Battery, Battery Life, Important Battery Information

S251B specifications

The Anritsu S251B is a state-of-the-art handheld spectrum analyzer designed for wireless communication applications. This compact yet powerful device is engineered to provide engineers and technicians with versatile and reliable measurements in both field and laboratory environments. Its lightweight design, weighing under 1.5 kilograms, allows for easy portability, making it an ideal solution for on-site testing.

One of the standout features of the S251B is its frequency range, which spans from 100 kHz to 6 GHz. This broad coverage is essential for monitoring various wireless technologies, including LTE, Wi-Fi, Bluetooth, and many others. The exceptional resolution bandwidth options from 1 kHz to 1 MHz help in detecting weak signals and interference, ensuring that users can analyze signals with precision.

The S251B utilizes advanced digital signal processing (DSP) technology, which significantly enhances measurement accuracy and speed. This allows for real-time spectrum analysis, ensuring that users can quickly identify and troubleshoot issues. The device supports a range of measurement applications, including spectrum analysis, interference analysis, and channel power measurements, making it a versatile tool for many scenarios.

For ease of use, the analyzer features a bright, color display that provides clear visibility in various lighting conditions. The intuitive graphical user interface enables quick navigation through settings and configuration options. Additionally, the S251B is equipped with a long-lasting battery that provides hours of continuous operation, further enhancing its suitability for field applications.

Connectivity is another key area where the Anritsu S251B excels. It offers USB and Ethernet ports for easy data transfer and remote control capabilities. This feature is particularly useful for engineers who need to integrate the analyzer into automated testing setups or require remote access for more profound analysis.

Moreover, the S251B is designed with ruggedness in mind. It is built to withstand the challenges of field use, including dropping and exposure to various environmental conditions, ensuring reliable performance even in demanding situations.

In conclusion, the Anritsu S251B handheld spectrum analyzer combines portability, advanced measurement techniques, and durability. With its wide frequency range, user-friendly interface, and connectivity options, it is a vital tool for professionals involved in the testing and deployment of wireless communication systems. Its robust capabilities make it an impressive asset for troubleshooting, maintenance, and installation tasks in the field.