HP 8591C, Руководство пользователя, Страница: 95 / 373

I
Channel Measurements
Making Channel Measurements
N O T E
Test signals for in-channel frequency response measurements must be found and selected manually
Multiburst and NTC 7 combination frequency packet pulse widths are critical to measurement results.
b. To change the line number, either enter the new number and press
or use the or arrow keys to increment and decrement,
respectively, the current line number by one.
Press FLD BOTH EVEN ODD to change the field as required.
Press Select Test Sig to select the displayed test signal. The
selections are GCR (Ghost Cancellation Reference), MULTI-BURST
(FCC multi-burst), NTC-7 CMBNTN (NTC-7 combination multi-burst),
or SIN X/X (sine x/x). Refer to Figure 2-32, Figure 2-33, Figure 2-34,
and Figure 2-35.
4. Press CONTINUE to execute the measurement. The peak and valley in the
measurement range will be found and used to calculate the result. See
Figure 2-36 and Figure 2-37. Pressing MARKER 1 or MARKER 2 allows
manual placement of the markers. After either of these keys is
the
automatic peak-to-valley search is stopped so the markers stay where they
are manually placed.
Press MORE INFO to display the marker amplitudes. See Figure 2-38.
Press MAIN MENU to exit the test.
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