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Field Telephone Line Analyzer

A rugged field tester with innovative feature sets.


Limited Quantity In Stock
Typically Ships within One Week
Extended Double Diamond™ Warranty Available (3 Additional Year)

*Required field

Product Features

  • Features the latest embedded process technology to provide a smart, powerful telephone test set that can be easily modified with feature sets.
  • Ideal for field use in extreme conditions.


  • Data-line-in-use capability.
  • High line voltage detection with next step options.
  • Active monitor circuitry minimizes load on subscriber line.
  • DTMF digit detection and display in monitor mode.
  • DTMF decode detects DSL and T1 lines.
  • Sees defects on customer equipment while dialing out.
  • Soft key menu system simplifies user interface and customization.
  • Includes 60-inch angled bed of nails with piercing clip cord set.
  • English, French, and Spanish language compatible.
  • Large, lighted LCD and glow-in-the-dark keypad.
  • Rainproof and highly water- and dust-resistant to the IP54 Standard.
  • Ergonomically designed body provides comfortable use.
  • Features speaker with fine volume adjustment and a noise-cancelling microphone.
  • Adjustable earpiece volume; hearing aid compatible.

  • Tech Specs

    Apparent Line Resistance 275 ohms at 20 mA
    Battery Life (Alkaline, 450 mA/hr) With 100% backlight and in speaker mode: 20 hours; Backlight off and speaker off: 75 hours; Standby: 2 years
    CE Approval Yes
    Dimensions 8.25"H x 2.5"W x 2"D (21 x 6.35 x 5.1 cm)
    Display Transflective 128 x 64 pixel graphical LCD with LED backlight
    Flash Duration 600 +/-50 ms
    Line-Current Range 10 to 110 mA
    Measurement Voltage: 0 to 200 VDC +/-5% Current: 10 to 110 mA +/-5% NOTE: Do not attach test set to electric-power lines.
    Memory 8 programmable locations, 32 digits with 12 charater tab, stored in non-volatile memory. Last number redial plus list of last 10 numbers dialed.
    Monitor Mode Impedance DC: 1MΩ typical; AC: 390KΩ at 1 KHz typical
    Pause Duration Tone: 3 sec.; Pulse: 3.4 sec.
    Power (4) AAA alkaline batteries
    Pulse Dialing Pulse rate: 10 pps +/- 10%; Make/break ratio: 60% to 40% +/-2%; Interdigit interval: 820 ms; Resistance during break: 120K Ohms minimum
    Return Loss Minimum 14 dB at 600 Ohms
    Ringer Equivalence in BELL mode: 0.0
    Tone Dialing DTMF output (into 600 ohms): Tone-frequency error: +/-1.5%; Tone level: High group: -6 +/-2 dBm; Low group: -8 +/-2 dBm; High group vs. low group difference (twist): 2 +/-1 dBm
    Weight 1.1 lb. (0.5 kg)

    * 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: $29.46

    Extended 3 Year Warranty Available

    Protect your purchase with an additional 3 Year Double Diamond™ warranty!
    Cost: $58.93


    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 Field Telephone Line Analyzer comes with a standard 1 Year Double Diamond™ Warranty (Standard) 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.