Technical Articles

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  FPGA Analog Fiber Links: Channel Scheduling and Stale Outputs

  Separate FPGA logic scheduling from ADC sample timing, channel mapping and DAC refresh. A held analog output may be valid electrically but stale.

  First published 2026-10-15· Fundamentals· ID 13897Views 110 +2
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  Deploying USB Fiber Extenders: Host Roles, Power and Recovery

  Extend the host-to-peripheral USB path with matching optics and remote power. After fiber recovery, verify enumeration, application access and fresh data.

  First published 2026-10-15· Networking & Configuration· ID 13893Views 90 +2
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  Choosing HDMI Fiber Extenders: Video Modes and Optical Budget

  Specify HDMI resolution, refresh, chroma, bit depth and auxiliary services. Check EDID, HDCP and the receiver power window with the actual endpoint pair.

  First published 2026-10-15· Selection Guide· ID 13889Views 95 +1
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  PDH RLB Loopback Tests: Coverage, Errors and Service Recovery

  Define the PDH RLB return point before testing. Compare the returned bit sequence, state which interfaces are excluded, then remove loopback and restore service.

  First published 2026-10-15· Troubleshooting· ID 13885Views 98 +1
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  PDH Interface Compatibility: E1, Ethernet and Optical Formats

  Check PDH compatibility at the E1 electrical interface, framing, timing and optical multiplexing layers. Matching sockets or wavelengths are insufficient.

  First published 2026-10-15· Fundamentals· ID 13881Views 89 +1
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  Choosing a Four-Branch RS485 Hub: Ports, Isolation and Roles

  Choose an RS485 hub by upstream and branch roles, active drivers, real isolation boundaries and polling timing. Four branches do not create four serial services.

  First published 2026-10-15· Selection Guide· ID 13877Views 83 +0
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  Testing Contact-over-Fiber Links: Timing, Pulses and Recovery

  Test contact-over-fiber channel mapping, input-to-output response, pulse recognition and loss behavior. Optical backup switching is a separate measurement.

  First published 2026-10-15· Networking & Configuration· ID 13873Views 97 +0
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  Analog Fiber Link Troubleshooting: Readings, Errors and Hold

  Locate analog fiber faults using known input points, output load checks and PLC scaling, while distinguishing a held output from a fresh measurement.

  First published 2026-10-15· Troubleshooting· ID 13869Views 89 +0
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  Installing HDMI Fiber Extenders: Baselines and Commissioning

  Commission HDMI fiber links in direct, short-fiber and installed-line stages, preserving the target mode and checking each auxiliary service independently.

  First published 2026-10-15· Networking & Configuration· ID 13865Views 83 +1
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  Discrete vs Analog Fiber I/O: DI/DO, AI/AO and Signal Scaling

  Choose DI/DO or AI/AO by the required information, then verify electrical input form, output direction, analog scaling and complete channel mapping.

  First published 2026-10-15· Selection Guide· ID 13861Views 93 +1