What device can be used alongside a signal level meter (SLM) to check the drop system for RF continuity?

Using a signal generator alongside a signal level meter (SLM) to check the drop system for RF continuity is appropriate because a signal generator produces a controlled RF signal that can be injected into the drop system. This allows for the assessment of signal quality and strength throughout the system. The SLM can then measure the power levels at different points within the drop to ensure that the signal is being transmitted effectively without significant loss or attenuation.

When testing for RF continuity, the signal generator's output can be adjusted to different frequencies, allowing technicians to evaluate the system's performance across the desired range. This method is useful for identifying issues such as faulty cables, connectors, or splitters in the drop system, which may impact overall performance.

The other options do not provide the same utility for evaluating RF continuity. A frequency generator typically generates signals at specific frequencies but may not be as effective for RF applications as a signal generator that's specifically designed for that purpose. An oscilloscope allows for viewing signal waveforms but does not provide direct measurements of signal strength in a drop system context. Another SLM would not be able to inject a signal for continuity testing but could only measure signals, thus not fulfilling the need for a direct signal input to assess drop system integrity.