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Zorluk: OrtaDisplay Cables and Connectors

A system administrator is upgrading desktop computers in a training facility. The new workstations only feature DisplayPort outputs, but the existing wall-mounted monitors only have analog VGA ports. When a technician uses a passive DisplayPort-to-VGA adapter cable to connect a workstation to a monitor, the display remains blank. Which of the following explains why the video signal fails to display and identifies the necessary hardware to resolve the issue?

  1. DisplayPort natively outputs digital signals while VGA requires analog signals, so an active adapter with an integrated Digital-to-Analog Converter (DAC) is required.Cevap
  2. B
    VGA connections require higher bus bandwidth than native DisplayPort outputs can provide, requiring a dual-link DVI cable to boost signal throughput.
  3. C
    The DisplayPort output port must be reconfigured in the motherboard BIOS to enable Thunderbolt protocol mode before analog signals can pass through.
  4. D
    The passive cable fails because standard VGA interfaces require digital audio channels that standard DisplayPort connectors cannot multiplex.

Cevap

DisplayPort natively outputs digital signals while VGA requires analog signals, so an active adapter with an integrated Digital-to-Analog Converter (DAC) is required.
DisplayPort outputs digital video signals, whereas VGA requires analog RGB signals. A passive adapter cable only rewires matching pins and cannot perform signal translation. To connect a digital DisplayPort output to an analog VGA input, an active converter containing an integrated Digital-to-Analog Converter (DAC) is required to transform the digital data into analog signals.

Adım Adım Çözüm

1
Identify the signal types of the host output interface and the display input interface.
DisplayPort produces digital signals, whereas VGA accepts analog signals.
Understanding signal format compatibility determines whether passive adapter pin-outs or active hardware conversions are required.
2
Evaluate the capability of passive adapter cables between DisplayPort and VGA.
Passive cables only rearrange physical pins and cannot convert digital stream data into analog voltage levels.
DisplayPort dual-mode (DP++) can output passive DVI/HDMI digital signals, but cannot natively output analog VGA signals without active conversion hardware.
3
Determine the required adapter type to complete signal conversion.
An active DisplayPort-to-VGA adapter containing a powered DAC chip must be installed.
The DAC chip actively receives the digital packet stream from DisplayPort and translates it into analog RGB voltage signals for VGA.

Anahtar Kavram

Active vs. Passive Video Signal Conversion
Tahmini Süre:1m 0s
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Display Cables and Connectors

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