CBT CBT Studio Operations & Production 1 — Questions and Answers
Question 1: What is the purpose of a production switcher (vision mixer) in a broadcast studio?
- To route audio signals between studio microphones
- To select and transition between multiple video sources for on-air output (Correct answer)
- To control lighting intensity across studio zones
- To synchronize teleprompter scripts with camera positions
Correct answer: To select and transition between multiple video sources for on-air output
A production switcher allows the technical director to select, mix, and transition between multiple camera and source inputs, producing the final composite program output.
Question 2: What does 'tally' refer to in a broadcast studio environment?
- The count of recorded takes for a segment
- An indicator light that shows which camera is currently on-air or in preview (Correct answer)
- The log of all switcher transitions during a live show
- A measurement of signal level at the master control output
Correct answer: An indicator light that shows which camera is currently on-air or in preview
A tally system illuminates red lights on cameras and in viewfinders to indicate a source is live on-air, and often a green or amber light to indicate it is selected in preview.
Question 3: What is the function of interruptible foldback (IFB) in broadcast production?
- A return audio feed allowing directors to communicate privately with on-air talent (Correct answer)
- A method of folding back studio audio to eliminate echo
- A technique for embedding timecode in program audio
- A system for monitoring audio levels at the transmitter
Correct answer: A return audio feed allowing directors to communicate privately with on-air talent
IFB delivers program audio plus a director or producer's voice cue to a talent's earpiece, enabling real-time communication without interrupting the on-air broadcast.
Question 4: What is the purpose of a studio floor manager during a live broadcast?
- To operate the production switcher from the studio floor
- To relay director's cues to talent and manage studio floor activity (Correct answer)
- To monitor audio levels for all studio microphones
- To control camera movements via remote robotic heads
Correct answer: To relay director's cues to talent and manage studio floor activity
The floor manager acts as the director's representative on the studio floor, relaying cues, countdowns, and instructions to talent and crew who cannot hear the control room intercom.
Question 5: What does 'headroom' mean when composing a camera shot for broadcast?
- The audio gain reserve before clipping in the camera's microphone input
- The space left between the top of a subject's head and the upper frame edge (Correct answer)
- The vertical clearance required for lighting grid rigging
- The dynamic range available in the camera sensor above 18% gray
Correct answer: The space left between the top of a subject's head and the upper frame edge
Headroom in shot composition refers to the deliberate space between the top of a subject's head and the top of the video frame, following standard broadcast framing conventions.
Question 6: In a broadcast studio, what is a 'hot mic' situation?
- A microphone requiring phantom power above 48V
- A microphone that is open and transmitting audio to the broadcast chain without the talent's awareness (Correct answer)
- A condenser microphone with a sensitivity above -30 dBV/Pa
- A radio frequency microphone operating in the hot zone near an RF transmitter
Correct answer: A microphone that is open and transmitting audio to the broadcast chain without the talent's awareness
A hot mic is an active, open microphone that is live in the signal chain, potentially capturing and broadcasting audio the talent does not intend to be heard.
CBT CBT Studio Operations & Production 1
What is the purpose of a production switcher (vision mixer) in a broadcast studio?