Wavetek 147 Specifiche Scaricare il pdf (Pagina 311)

100

101

SDA-5500/SDA-5510 Sweep Configuration: Configuring Reverse Sweep

287

Fig. 14-11 Single Cable – Split Band Network Reverse

Sweep Configuration With Bi-Directional Test Points.

Systems with directional test points are set up as shown in Figure 14-11. The

directional coupler on the input side should be designed for at least the

frequency range of the forward bandwidth of the network under test. (This

coupler network should never be connected to the system without the SDA-

5000 attached, or the resulting lack of isolation might cause signals from the

forward path to bleed over to the reverse path.)

Dual Cable Network

Another possible, though rare, network configuration is the dual cable

network, in which a full bandwidth is used for both forward and reverse path

signals (see Fig. 14-12). In other words, it consists of essentially two cable

systems overlaying each other with signals carried in opposite directions.

Two cables can be used to sweep this type of system in both directions with

the same setup. A sample setup is shown in Figure 14-12.

SDA-5500 or

SDA-5510

SDA-5000

out

outin

Combining

Network

Distribution Amplifiers

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Wavetek 147 Specifiche Pagina 311

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