CTS Display Technologies and Video Systems 5

Question 1

Which video synchronization method embeds sync information within the luminance signal itself, eliminating the need for separate sync lines?

Accepted Answer

Sync-on-green (SOG)

Answer

Sync-on-green (SOG) embeds the horizontal and vertical sync pulses onto the green channel of an RGB signal, requiring no dedicated sync wire.

Question 2

A CTS candidate is evaluating ambient light for a display installation. The room measures 150 lux at the screen surface. Using the recommended screen luminance-to-ambient ratio guideline, what minimum screen luminance (in nits) should the display produce?

Accepted Answer

450 nits

Answer

A 3:1 screen luminance to ambient illuminance ratio is commonly recommended; 150 lux × 3 = 450 nits minimum screen luminance for adequate contrast.

Question 3

What is the primary advantage of using DisplayPort Multi-Stream Transport (MST) in a professional AV installation?

Accepted Answer

It allows multiple independent displays to be daisy-chained from a single DisplayPort output

Answer

DisplayPort MST allows multiple independent video streams to be transmitted over a single cable and daisy-chained through compatible displays or hubs.

Question 4

A technician is aligning a dual-projector edge-blend system. After geometry correction, there is still a visible bright seam at the overlap zone. What should be adjusted next?

Accepted Answer

Apply gamma correction to the overlap zone using the blend overlap width and falloff curve settings

Answer

The bright seam in an edge-blend overlap zone is corrected by adjusting the blend width and the luminance falloff curve so that the two projectors' contributions sum to uniform brightness.

Question 5

Which VESA display standard defines the mounting hole pattern commonly used for professional flat-panel displays up to 800×400mm spacing?

Accepted Answer

VESA FPMPMI (Flat Panel Monitor Physical Mounting Interface)

Answer

The VESA FPMPMI standard defines the standardized mounting hole patterns (e.g., 75×75, 100×100, up to 800×400mm) used for flat-panel display mounting.

(CTS) Certified Technology Specialist Practice Test

(CTS) Certified Technology Specialist Practice Test

CTS Display Technologies and Video Systems 5