CARA POINTING ANTENA BTS MICROWAVE 0.3 0.6 METER HUAWEI

Summary

This video script provides a detailed step-by-step guide on commissioning antennas, using a microwave link as an example. It explains how to adjust the antenna to align electromagnetic waves, including the process of using a multimeter to measure signal strength and adjust the antenna’s positioning. Key actions include ensuring proper frequency settings, rotating antennas for optimal signal reception, and fastening all components securely. The script emphasizes careful attention to detail, such as disabling specific functions and testing voltage, to ensure reliable antenna performance during installation and adjustments.

Takeaways

• 😀 Ensure the major lobes of two antennas are aligned for optimal signal strength.
• 😀 Only commission one antenna side at a time during antenna adjustment.
• 😀 Make sure the ATPC functions are disabled when adjusting antennas.
• 😀 Set both the working frequency and transmit frequency of the ODUS before beginning adjustments.
• 😀 Keep the ODUS in mute mode while performing antenna adjustments.
• 😀 Use a multimeter with a BNC connector to measure the voltage at the RSSI port of the local ODU.
• 😀 Slowly rotate the local antenna around the pole in a large horizontal range to identify maximum voltage.
• 😀 Tighten the fine adjusting bolts alternately to prevent antenna misalignment during the horizontal adjustment.
• 😀 Adjust the elevation angle of the local antenna until the received signal level is maximized within the scan range.
• 😀 Once the local antenna is properly adjusted, apply the same procedure to adjust the remote antenna.

Q & A

What is the purpose of antenna commissioning?

Antenna commissioning is the process of adjusting antennas to ensure that they are properly aligned and optimized for maximum electromagnetic wave transmission and reception. This helps in achieving a stable and efficient signal.

Why is it important to adjust the alignment of antennas during commissioning?

The strength of the electromagnetic waves transmitted by an antenna varies in different directions. Aligning the antennas ensures that their major lobes are correctly positioned to optimize signal reception and transmission.

What should be done with the ATPC functions during antenna adjustment?

The ATPC (Automatic Transmit Power Control) functions should be disabled while adjusting the antennas to ensure that the antenna settings are not automatically adjusted by the system, allowing for more precise manual tuning.

How should the working frequency and transmit frequency be set for the ODU during commissioning?

The working frequency and transmit frequency of the ODU should be set using the Web LCT (Local Control Terminal). It's crucial to ensure these frequencies are configured correctly for optimal antenna performance.

What is the purpose of using a multimeter during antenna adjustment?

A multimeter is used to measure the voltage at the RSSI port of the local ODU. The voltage level helps indicate the signal strength, allowing for precise antenna adjustments to achieve the maximum received signal.

How should the antenna be adjusted to achieve the maximum signal strength?

The antenna should be slowly rotated in the horizontal direction, while checking the voltage reading on the multimeter. The antenna should be adjusted until the voltage reaches its maximum, indicating optimal signal strength.

What is the significance of fine-tuning the adjusting bolts on the antenna?

Fine-tuning the adjusting bolts helps to make small, precise adjustments to the antenna's position. This ensures that the antenna is aligned perfectly for maximum signal reception without causing an imbalance.

What should be done once the local antenna's receive level reaches its maximum?

Once the local antenna's receive level reaches the maximum, the fine adjusting bolts should be fastened to secure the antenna in place. Both adjusting knots should be tightened alternately to avoid misalignment.

What is the process for adjusting the remote antenna?

The same process used for adjusting the local antenna should be applied to the remote antenna. The antenna should be rotated, and its elevation angle adjusted until the maximum receive level is achieved.

What final steps are necessary after adjusting both the local and remote antennas?

After adjusting both antennas, ensure that the antennas are securely fastened. The ground cables of both ODUs should also be properly attached to the steel tower to complete the antenna commissioning process.