Tektronix 2715, User Manual

Page: 243 / 360

Spectrum Analyzer Menus
2715 User Manual
6–61
5. Press [1] to select REFERENCE LEVEL.
6. Press [2] [4] [.] [5] [2] [Y] to enter 24.52 dBmV.
The 2715 rounds and stores the reference level to one decimal place
(0.1 dB).
7. Press [2] to select SPAN/DIV.
8. Press [2] [2] [.] [6] [8] [3] [2] [X] to enter 22.6832 MHz/division.
The span is rounded and stored to three decimal places, but in the spectral
display the span is shown rounded to one place.
Leave the remaining parameters set as they are, but note the following settings:
H
RF attenuation can be set to AUTO (the default), or fixed from 0 to 50 dB in
2 dB step
H
The resolution bandwidth can be set to AUTO (the default), 300 Hz, 1 kHz,
3 kHz, 10 kHz, 30 kHz, 100 kHz, 300 kHz, 1 MHz, or 5 MHz — if you
enter another value, the 2715 will convert it to the nearest available value
H
This menu provides the only method of manually setting the video filter
bandwidth. The video filter bandwidth can be set to AUTO (in which case it
is 1/100 of the resolution bandwidth in normal mode) or fixed from 3 Hz to
300 kHz in a 1–3 sequence (3 Hz, 10 Hz, ...100 kHz, 300 kHz); other values
will be converted to the nearest allowable values
H
Selecting item 6, VERTICAL SCALE, calls up another menu that enables
you to select any of the normal values of 10 dB/div, 5 dB/div, 1 dB/div, or
Linear
H
Sweep rate can be set from 1
µ
s/div to 2 s/div in a 1–2–5 sequence. Other
values will be converted to the nearest allowable value. Rates faster than
100
m
s/div can be used only with analog displays (that is, with display
storage turned off)
9. Press [UTIL] to return to the spectral display and view the screen you have
created.
10. Press [UTIL] [2] to return to the KEYPAD ENTERED SETTINGS menu.
11. Press [2] [2] [0] [X] to enter a span/div of 20 MHz.
12. Press [1] [2] [8] [.] [8] [Y] to enter a reference level of 28.8 dBmV.
13. Press any menu button to restore the spectral display.