What is the purpose of a test monitor during CCTV installation?

The purpose of a test monitor during CCTV installation is primarily to assist in aligning the cameras and verifying image quality before they are permanently mounted. This step is crucial as it ensures that the cameras are positioned correctly to capture the intended field of view and that the images produced meet the required quality standards for visibility and clarity. By using a test monitor, the installer can evaluate the live feed from the cameras in real time, making necessary adjustments to angles and focus settings to ensure optimal performance once the installation is complete.

This process helps in avoiding potential issues that could arise if the cameras were mounted without proper alignment and quality checks, which could lead to inadequate surveillance coverage or unusable footage. The other options do not align with the primary function of a test monitor during installation—recorded footage viewing, additional storage for footage, or improving internet connectivity are aspects of CCTV systems, but they do not pertain to the real-time setup and calibration that a test monitor facilitates.