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Pocket Fiber Tester With ST Connectors

Provides inexpensive fiber testing.


Please call 877-877-2269 for a replacement product or part.
Extended Double Diamond™ Warranty Available (3 Additional Year)

Product Features

  • Generates an 850-nm wavelength only.
  • Works with these fiber optic cables: multimode; 50-, 62.5-, and 100-micron; simplex, duplex, or bundled.


  • Can be used to test installed fiber optic cables with the Pocket Opto Source.

  • Tech Specs

    CE Approval Yes
    Connectors (2) ST
    Indicators PWR, Bargraph-style LED in 2-dBm increments
    Output Wavelength 850 n ± 15 nm at ± 3 dBm
    Power 9-V, supplied by alkaline or nickel-cadmium transistor battery
    Power Output –20 dBm ±0.5 dBm (100µ-core fiber); –23 dBm ±1 dBm (62.5µ-core fiber); –26 dBm ±1 dBm (50µ-core fiber)
    Readout Range –22 dBm to –40 dBm
    Readout Resolution 2 dBm
    Size 4.5“H x 2.3“W x 1“D (11.4 x 5.8 x 2.5 cm)
    NOTE: Fiber testers are for use with glass-core fiber optic cable only.

    * Technical specification weight is the unit weight. It is not the packaged shipping weight. For shipping weight, please contact Black Box customer service at 877-877-2269.



    Double Diamond Warranty

    Extended 1 Year Warranty Available

    Protect your purchase with an additional 1 Year Double Diamond™ warranty!
    Cost: $31.70

    Extended 3 Year Warranty Available

    Protect your purchase with an additional 3 Year Double Diamond™ warranty!
    Cost: $63.39


    Double Diamond™ Warranty (Standard)

    Take the risk out of equipment purchases with the Double Diamond™ Warranty from Black Box Network Services.

    The Double Diamond Warranty is our warranty that protects your Black Box® brand products* from accidental damage, including drops, water, and power surges.

    The Pocket Fiber Tester With ST Connectors comes with a standard 1 YEAR warranty already included.

    During the warranty period, Black Box Network Services will repair or replace your damaged equipment within one week of receipt at NO CHARGE!*

    Plus, get an Extended Double Diamond Warranty.

    You can also extend your warranty or protect a previously purchased Black Box® brand product** for an additional year—for only 10% of the purchase price! Or, extend your coverage for a full three years for only 20% of the purchase price!

    Ordering an extended warranty is easy: When viewing a product in your shopping cart, just select the one or three years of additional coverage in the dropdown menu under “Warranty Options.” For details, contact Customer Service at 724-746-5500.

    * Warranty subject to certain exclusions and limitations ** Certain products may not be eligible.

    What’s more, we also have a 45-day return policy. Simply call Customer Service for a Return Authorization (RA) number, return your product in new condition and in the original package, and receive a full refund.