Certifying pinned MPO to LC multimode links with the CertiFiber Pro
This article describes a method for certifying a multimode link with a pinned MPO connection at one end and LC at the other, often referred to as a hybrid link, using the CertiFiber Pro. Using the MultiFiber Pro will result in a quicker certification. Additionally, the MultiFiber Pro automatically reports polarity. Click here to see how you can certify unpinned MPO to LC links cables using the MultiFiber Pro.
Since this method requires the use of a break out cable (unpinned MPO to LC harness), the user needs to understand the desired polarity for their installation. また、この方法で適切な認証を行うには検査が不可欠です。検査を怠ると、結果が悲観的になることがあります。Inspection includes both the end faces of the MPO and LC connectors. MPO adapter tips are available for the USB FI-7000 FiberInspector:
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テスト・リミットについては、ケーブル・ベンダー/コンサルタントに確認してください。 Here we shall use TIA-568.3-E Multimode with a 2 Jumper Reference. You may have been told; "Never carry out a 2 Jumper Reference for link testing". However, this is one occasion where we will eventually end up doing just that. Note that the No. of Connections/Splices: 3/0 であることに注意してください。これは重要です。If you leave this as 2/0, your calculated loss budget in CertiFiber Pro will be optimistic by one connection - you will end up failing good links.
- すべてのテスト・コードを検査し、必要に応じてクリーニングします。
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Connect the main and remote units with hybrid SC to LC test reference cords. (Do not use Bend Insensitive Multimode cords here)
- From the HOME screen, tap SET REF > OK > SKIP WIZARD > SET REFERENCE (DO NOT USE the RUN WIZARD for this method)
- Press the HOME key.
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With the reference complete, disconnect from the INPUT PORTS only:
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既知の良好な LC‐LC テスト基準コードをメイン・ユニットの入力ポートに挿入します。
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既知の良好な LC‐LC テスト基準コードをリモート・ユニットの入力ポートに挿入します。
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メイン・ユニットとリモート・ユニットをシングルモードの LC バルク・ヘッド・アダプターで接続します。(Singlemode typically provides better alignment, important for this TRC check)
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[テスト] を押して、報告される損失が ≤0.15dB であることを確認します。それ以外の場合は先に進まないでください。
ここの画面に表示されているコネクター数は無視してください。両方のファイバーの損失が ≤0.15 dB であることを確認してください。この例では、損失は 0.05 dB と 0.04 dB ですので、次の手順に進みます。 -
With a reported loss of ≤0.15 dB for both fibers, press the HOME key and SET REF > OK > SKIP WIZARD > SET REFERENCE to complete a 2 Jumper Reference:
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With the reference set, press the HOME key and disconnect the main and remote units:
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Connect your unpinned MPO to LC breakout cable to the main unit:
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Connect to the link you wish to test, paying attention to polarity. Press the TEST key:
補足情報
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Your result will have shown three connections on the screen, but one of them is greyed out since you referenced that out when carrying out the 2 Jumper Reference. However, only two of them are encircled with a dotted line, indicating a two connection count, not three, since a 2 Jumper reference was carried out before the measurement.
