Test Equipment

NTDS Serial Tap Box

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NTDS Serial Isolation Tap Box

IXI’s Serial NTDS Isolation Tap Box is the ideal solution for reliably tapping NTDS Serial Type D and E interfaces. It connects easily to existing cables forming a tee connection that can be used for data monitoring and acquisition over long distances.

Signal integrity is assured when using the Serial Isolation Tap Box. The tap can be powered up or down with no impact to active NTDS communications. Isolation of the tapped signal from the tee connection is achieved by transformer-coupling it to the input stage of a separate active circuit. The tee circuit produces a regenerated NTDS serial signal that allows the remote monitor to be located at distances up to the maximum cable length specified in MIL-STD-1397C (1000 ft. for Type D, 985 ft. for Type E).

The Serial Isolation Tap Box has a negligible load factor, allowing multiple taps to be placed on the same cable with no signal degradation. It is also possible to tap the tee output of another tap, cascading taps as many times as needed to distribute the signal to multiple destinations.

The Tap can be powered up or down without interference to the active channel. IXI’s Serial NTDS Isolation Tap Box also comes in two types: stand-alone or flange mountable. Access the NTDS data you need without interference to your system with IXI’s NTDS Serial Isolation Tap Box.

Technical Specs for NTDSS Serial Isolation Tap
  • Temperature (Operating)
    0 to +50ºC
  • Humidity
    5% - 90% (non-condensing
  • Output Impedance
    NTDS Type “E” 50 Ohms
    NTDS Type “D” 70 Ohms
    Tap Output: Trompeter BJ770 (triaxial)
    NTDS Type D:
    Source/Sink Input: Trompeter BNC (coaxial)
    Tap Output: Trompeter BNC (coaxial)
  • NTDS Connectors
    NTDS Type “E”:

    (4) Source/Sink Input, Trompeter BJ80 (tri-axial)

    (2) Output Interface, Trompeter BJ770 (tri-axial)

    NTDS Type “D”
    (4) Source/Sink Input, Trompeter BNC (co-axial)

    (2) Output Interface, Trompeter BNC (co-axial)


  • Controls
    AC Power Switch
  • Indicators
    Output (A/B) LED activity indicators (green)
    AC applied power LED indicators
  • Power Requirements
    90-240VAC (1A, MAX); Power Cable: IEC Publication 320
  • Weight
    10 lbs.
  • Dimensions
    4.7”H x 7.9W x 7.9”D
  • Model Numbers
  • Isolated Passive Tap, NTDS Type E, Triaxial Connectors
    AN-ST012-00
  • Isolated Passive Tap, NTDS Type D, Coaxial Connectors
    AN-ST013-00
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