Tektronix 2715, Руководство пользователя

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Spectrum Analyzer Menus
2715 User Manual
6–25
15. Turn off the markers and turn the FREQ/MKRS knob one click.
The frequency now changes by one harmonic (100 MHz) per click. When
making distortion measurements, this is one way to look at positions where
harmonics should be present. In fact, any time your measurements require
you to look at multiples of a frequency difference, but you do not want to be
bothered with actually entering the frequency, the delta-marker tuning
increment mode provides a quick, convenient way of doing it.
16. Return to the Programmed Tuning Increment menu to specify a particular
tuning increment.
17. Choose item 3, KEYPAD ENTRY, and enter a value of 7 MHz.
The spectral display reappears.
18. Turn the FREQ/MKRS knob.
The frequency changes by 7 MHz per click, a value not otherwise available.
Entering a keypad tuning increment automatically places the 2715 in
programmed tuning mode.
19. There are two ways to turn off any programmed increment, including the
keypad entered increment:
a. First, toggle item 8 on the Marker/Frequency menu to read AUTO.
This turns off the keypad value and restores automatic selection of the
tuning increment.
b. Second, select the programmed tuning increment from the MKR/FREQ
menu and choose item [4], RETURN TO AUTO from the Programmed
Tuning Increment menu.
This also turns off the keypad value and restores automatic selection of
the tuning increment.
20. Turn the keypad increment back on by reselecting PROGRMD TUNING
INC from the MKR/FREQ menu, and choosing item 2, KEYPAD ENTRD
INC.
21. Now turn off the keypad selected increment.