| T |
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| Teflon |
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Dupont Company trademark for fluorocarbon resins. ( See FEP
and TFE) |
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| TFE |
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Tetrafluoroethylene. A thermoplastic material with good electrical
insulating properties and chemical and heat resistance. |
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| Thermal Rating |
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The temperature range in which a material will perform its
function without undue degradation. |
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| Thermal Shock |
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The effect of heat or cold applied at such a rage that non-uniform
thermal expansion or contraction occurs within a given material
or combination materials. The effect can cause inserts and other
insulation materials to pull away from metal parts. |
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TNC
(Threaded Navy Connector) |
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Coaxial connector with screw type coupling mechanism. Available
in 50 Ohm; and 75 Ohm versions. Frequency range DC-11㎓ (50 Ohm)
and DC-1㎓ (75 Ohm), respectively. |
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| Transfer Impedance |
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For a specified cable length, transfer impedance relates a
current on one surface of a shield to the voltage drop generated
by this current on the opposite surface of the shield. Transfer
impedance is used to determine shield effectiveness against
both ingress and
egress of interfering signals. Cable shields are normally designed
to reduce the transfer of interference-- hence, shields with
lower transfer impedance are more effective than
shields with higher transfer impedance. |
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| Transmission Line |
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A signal-carrying circuit composed of conductors and dielectric
material with controlled electrical characteristics used for
the transmission of highfrequency of narrow pulse type signals. |
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| Transmission Loss |
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The decrease or loss in power during transmission of energy
from one point to another. Usually expressed in decibels. |
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| Triaxial Cable |
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A cable consisting of one center conductor and two outer concentric
conductors (with an insulating layer separating them). Notable
for increased shielding efficiency. |
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| Twinaxial Cable |
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Two conductors that are insulated from one another, twisted
together and surrounded by a common shield. |
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