Wavetek 147 Dokumentacja Pobierz pdf (Strona 330)

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SDA-5500/SDA-5510 Sweep Configuration: Sweep History and Theory

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See Also

½ For more information about reverse path troubleshooting,

see Chapter 5.

• With both transmitters active, a different reverse sweep plan can be used

with each. If different types of information are required, try the following

procedure. The SDA-5510 can be set up for a sweep point every 1mHz

of reverse bandwidth to get fast sweep updates. The SDA-5500 can be

set up with a very dense sweep every 50kHz through a modem channel

that is being commissioned for service.

NOTE: While Acterna does not recommend a dense

sweep of an active reverse channel, during commissioning

more information may be helpful.

• The drawbacks to using both transmitters for reverse sweep are:

• A more complex set of connections in the headend.

• Slower forward sweep update rates when the SDA-5500 is used for

reverse sweep or noise broadcast.

NOTE: In a SDA-5500/SDA-5510 system, it is easiest to

set the SDA-5500 for forward only sweep, and the SDA-

5510 for reverse only sweep.

When you have selected active modes for your sweep transmitters, you can

proceed to wiring the transmitters accordingly.

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