Wavetek 3ST Spécifications télécharger pdf (Page 26)

4-2

We recommend that the telemetry be set at 10 dB below the video

carrier level.

Any response irregularities caused by the combining network will be

eliminated in the normalization process.

After the transmitter is properly connected, the next step is to build a

channel plan. This channel plan will designate which channels are

active in the system, which channels are scrambled, and which

channels are inactive and therefore can be converted to sweep

injection points. The channel plan can be edited to indicate which

channels are to be tested in the Tilt mode, and to label the channels

with the programming content or call letters of the broadcaster.

The following procedure describes the steps to prepare the transmit-

ter for sweeping.

Building A Channel Plan

1. To build a channel plan, first enter the setup mode by pressing the

SETUP key.

2. Press the Channel Plan soft key, and cursor down the menu to

Build Channel Plan.

3. Press the ENTER key, and you will be prompted at the first step to

name the channel plan to be built. The name should be a logical

one that will be easy to remember. The location of the headend is

usually a good name for the channel plan. When the name is typed

in, press the ENTER key.

4. The next step is to choose a channel plan from the built-in list that

most closely resembles the plan of your system. Typically your

system channel plan will be a subset of the built-in plan. Cursor

down to the appropriate channel plan and press the ENTER key or

the OK soft key.

5. You will then be prompted to enter the highest frequency that you

would like to scan. Type in the frequency and press the ENTER

key followed by the OK soft key. The unit will then commence a

scan for the presence of channels. After the scan is done, this

phase of the channel plan building process is complete. Press the

Exit soft key to return to the Channel Plan menu.

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Wavetek 3ST Spécifications Page 26