Coaxial Cables - Tektronix 2205 Operator's Manual

Coaxial Cables
To maintain good waveform fidelity and accuracy, use only high-
quality, low-loss coaxial cables. When you use 50 n or 75 H
coaxial cable, attach a matching external terminator. Some high
frequency response will be lost without external termination.
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2205 Operator's