HP 8591C User Manual page 71

Cable tv analyzer cable tv measurements
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Channel Measurements
Making Channel Measurements
Remove the carrier, or press CTB STEP UP or CTB STEP DN to
measure CTB above or below the carrier (if an open space exists). Each
time CTR STEP UP is pressed, the marker is automatically positioned
at the next CTB above the carrier (+6 MHz increments). Each time
CTB STEP DN is pressed, the marker is automatically positioned at the
next CTB below the carrier (-6 MHz increments). See Figure 2-18.
RE-ENTER TEST restarts the test from the beginning. Pressing
TTL PWR (8 INPUT calculates the total input power making input level
adjustments more convenient. Pressing MAIN MENU exits the test.
10. If you want to store the results to a RAM card, insert a formatted
RAM card into the analyzer's card-insertion slot, press (SAVE)
measurement mode. Refer to Chapter 3 for the procedure on formatting a
RAM card.
11. If you want to print the results, press [Copv).
Be sure the channel's modulation is turned back on, then press MAIN
MENU again.
Hints
When using a tunable bandpass filter, first peak the filter using
press
Make sure the filter bandwidth is sufficient that the 1.25 MHz beats are not
rolled off.
2 - 2 8
Then
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