According to FCC Rules and Regulations, what is the acceptable variance for the digital pilot frequency of a television transmitter?

The acceptable variance for the digital pilot frequency of a television transmitter is set at ±1000Hz, which aligns with the FCC regulations that ensure the stability and interference-free operation of broadcasts. This small variance allows for fluctuations due to equipment tolerance and environmental factors while still maintaining a signal quality that is reliable for viewers.

Having a specific tolerance, like ±1000Hz, is crucial in the context of digital broadcasting since it helps maintain the integrity of the digital signal and ensures compliance with the standards that promote clear and uninterrupted reception. This regulation is designed to minimize potential interference with other channels and to maintain the expected quality of the broadcast.

While other options indicate larger variances or none at all, the specific tolerance of ±1000Hz strikes a balance between operational flexibility and transmission fidelity, which is essential for effective broadcasting operations.