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Zorluk: ZorDisplay Cables and Connectors

An IT technician is configuring a multi-monitor workstation for a financial analyst. The computer's dedicated graphics card features three DisplayPort 1.4 output ports, but the three external monitors only have HDMI 2.0 input ports. To ensure all three displays operate natively at 3840×21603840 \times 2160 resolution (4K4\text{K}) at a refresh rate of 60 Hz60\text{ Hz} without flickering or drops in resolution, which of the following implementation choices are required? (Select TWO.)

  1. Active DisplayPort-to-HDMI adapters must be installed to perform signal conversion from DisplayPort packet data to HDMI TMDS signals at 4K4\text{K} at 60 Hz60\text{ Hz}.Cevap
  2. Premium High Speed or Ultra High Speed HDMI cables must be used to support the required 18 Gbps18\text{ Gbps} bandwidth for 4K4\text{K} resolution at 60 Hz60\text{ Hz}.Cevap
  3. C
    Passive DisplayPort-to-HDMI pin adapters can be used because DisplayPort Dual-Mode (DP++) natively outputs high-bandwidth HDMI 2.0 signals across all ports simultaneously.
  4. D
    Standard USB Type-C passive display cables can be directly attached into full-sized DisplayPort outputs using mechanical shape converters.

Cevap

The technician must use active DisplayPort-to-HDMI adapters to actively convert the signal protocols and clock rates for 4K4\text{K} at 60 Hz60\text{ Hz}, and use Premium High Speed (or Ultra High Speed) HDMI cables rated for 18 Gbps18\text{ Gbps} bandwidth.
Achieving 4K4\text{K} resolution at 60 Hz60\text{ Hz} when converting DisplayPort outputs to HDMI inputs requires active adapters because passive DP++ conversion does not supply the pixel clock frequency required for HDMI 2.0 (18 Gbps18\text{ Gbps}). Additionally, the HDMI cables used in the setup must be Premium High Speed or Ultra High Speed rated to maintain 18 Gbps18\text{ Gbps} throughput across the entire signal path.

Adım Adım Çözüm

1
Analyze video interface signal protocols and conversion constraints.
DisplayPort uses packetized data transmission while HDMI uses Transition Minimized Differential Signaling (TMDS). Converting DisplayPort 1.4 outputs to HDMI 2.0 inputs at 4K4\text{K} at 60 Hz60\text{ Hz} exceeds passive DP++ dual-mode capabilities.
Passive adapters only pass through TMDS clock signals for lower resolution/bandwidth standards (up to HDMI 1.4 / 4K4\text{K} at 30 Hz30\text{ Hz}). Active adapters integrate a processing chip to convert DP signal packets to high-clock HDMI 2.0 signals.
2
Determine cable bandwidth requirements for 4K4\text{K} video at 60 Hz60\text{ Hz}.
Cables rated for at least 18 Gbps18\text{ Gbps} (Premium High Speed or Ultra High Speed HDMI) are required.
Standard or legacy High Speed HDMI cables are capped at 10.2 Gbps10.2\text{ Gbps}, which is insufficient for uncompressed 3840×21603840 \times 2160 at 60 Hz60\text{ Hz}.

Anahtar Kavram

Display Cable Bandwidth and Active vs. Passive Adapter Signal Conversion
Tahmini Süre:2m 0s
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Display Cables and Connectors

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