
348 Microwave Engineering
a. For barreters, the correct bias current is automatically supplied
through the input jack, the current value being selected by a
selector switch for either of the two different barreter resistances
in common use.
b. The internal impedance seen at the input jack is either 200 Ω or
200 kΩ.
c. When set to Bolo, a dc bias ≈8.75 mA or 4.5 mA is automatically
applied to a 200 Ω barreter connected to the input jack.
7. Input: The signal to be measured is to be applied.
10.4 Travelling Wave Detection
In Figure 10.3a and b two types of travelling wave detectors are shown.
The travelling wave detector ...