Chapter 3 Getting Started

Set the Distance and Cable Type

In Distance-To-Fault (DTF) mode, the length of the transmission line (distance) and cable type are selected. The cable type determines the velocity propagation and cable attenuation factor. The following procedure can be used to set the distance and select the appropriate cable type.

NOTE: Selecting the correct cable is very important for accurate measurements and for identifying faults in the transmission line. Selecting the incorrect cable type will allow the DTF trace to be shifted in vertical and horizontal displays and make it difficult to accurately locate faults.

Step 1. Press the MODE key.

Step 2. Select DTF RETURN LOSS or DTF SWR mode. The Site Master automatically sets D1 to zero.

Step 3. Press the D2 soft key.

Step 4. Enter the appropriate D2 value for the maximum length of the transmission line and press the ENTER key to set the D2 value.

Step 5. Press the DTF AID soft key.

Step 6. Using the Up/Down arrow key, select CABLE TYPE. Standard cable types are stored in the Site Master cable list. This standard list may not be edited. A cus- tom cable list can also be created.

Step 7. Using the Up/Down arrow key, select the appropriate list and select the type of cable. The selected cable type, PROP VEL and CABLE LOSS in dB/ft (or dB/m) will be displayed.

Step 8. Press ENTER.

Changing the Units

By default, the Site Master displays information in metric units. Use the following proce- dure to change the display to English units.

Step 1. Press the SYS key.

Step 2. Select the OPTIONS soft key.

Step 3. Press UNITS to change from metric to English measurement units, or vice versa. The current selection is displayed at the bottom left corner of the screen.

Changing the Display Language

By default, the Site Master displays messages in English. To change the display language:

Step 1. Press the SYS key.

Step 2. Select the Language soft key.

Step 3. Select the desired language. Choices are English, French, German, Spanish, Chi- nese, and Japanese. The default language is English.

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Anritsu S251C manual Set the Distance and Cable Type, Changing the Units, Changing the Display Language