在测试样板和7158型开关卡之间应该使用低噪声同轴电缆，以避免噪声电流。
Low noise coax cables should be used between the test coupons and the Model 7158 CARDS to avoid noise currents.
为了获得最小热噪声ENF ，在电缆浮力条件下对天线参数进行了最优化。
To minimize the thermal noise ENF under the buoyant condition of the cable, the optimization of the antenna parameters is obtained.
DUT和互连电缆也应该是屏蔽的，防止拾取噪声。
The DUTs and interconnect cabling should also be shielded to prevent noise pickup.
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