CATV Measurements
2715 User Manual
5–67
When taking an In-Channel Response measurement in Auto mode, you have a
choice between using the in-service basis or the normal basis; use menu item [7]
to choose the basis. If you choose in-service, you must also use item [6] to
specify the TV line number containing the desired test signal.
1. Press [5][1] to select Auto mode.
Auto Test Locations (items 2 through 8) are added to the menu. These
locations are points relative to the visual carrier where measurements are to
be made.
2. Press [2] and enter the first measurement location.
3. Press [3] and enter the second measurement location.
4. Press [4] and enter the third measurement location.
5. Press [5] and enter the fourth measurement location.
6. Press [6] and enter the fifth measurement location.
7. Press [7] and enter the sixth measurement location.
8. Press [BKSP] [0] to run the measurement.
If measuring in-service, the instrument measures the visual carrier peak for a
reference, then enables gating on the specified TV line and measures the test
signal amplitudes at the specified frequencies.
If measuring on the normal basis, the instrument pauses and prompts you to
switch to the appropriate full-field test signal before continuing. It then
measures the visual carrier peak and the test signal amplitudes.
9. Press [CATV/APPL] to display the IN-CHANNEL RESPONSE menu.
10. Press [1] to store the results of the last measurement.
After a short period of time, the message RESULTS STORAGE COM-
PLETE is displayed.
11. Press [2] to display the results of the last measurement performed.
A display resembling Figure 5–8 on page 5–54 appears. You can view other
previously stored results by pressing [W] or stop viewing the results by
pressing [Z].
Running The Automatic
Measurement
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