Dedicated Controls
4–8
2715 User Manual
3. Press [
y
] adjacent to [CHAN/FREQ].
The frequency changes by 10 MHz. (It would take ten presses of the arrow
key to change the frequency by 100 MHz.)
The frequency arrow keys change the frequency by one division.
4. Change the span/div to 100 MHz.
5. Press [
b
] adjacent to [CHAN/FREQ].
The frequency changes by one division (100 MHz). At large span/div
settings, the arrow keys can change the frequency very rapidly.
Keypad Entry.
For very large frequency changes, or to preset a known center or
start frequency, the direct entry mode using the keypad is faster. To set the center
or start frequency to a predetermined value, press [CHAN/FREQ] to place the
center or start frequency in immediate entry mode. The abbreviation FREQ
appears at left center of the 2715 screen.
The abbreviation FREQ indicates that you can enter the center frequency directly
from the keypad. This is done by keying in a permissible value followed by an
appropriate terminator key. You can enter any value from 0 Hz to 1.8 GHz, even
though the 2715 low-frequency specification is 9 kHz. Your entry can contain up
to 25 characters, but regardless of how many you enter, the 2715 attempts to
control frequency to the nearest hertz, and the frequency is displayed at the top
of the left-hand data column to 1% of the span/div.
6. Press [CHAN/FREQ] to enter the immediate entry mode.
7. Press [1] [
] [2] [5] [X] to set the center frequency to 1.25 MHz.
The numbers you type appear on screen to the right of FREQ. If you make a
mistake, correct it any time prior to pressing MHz by repeatedly pressing
[BKSP] until the incorrect number disappears, and then enter the correct
value.
Pressing a terminator key ([W], [X], [Y], [Z]) determines the units and enters the
data. [X] can represent units of MHz, ms, or mV. Because the frequency
immediate entry mode requires a frequency, the 2715 interprets the currently
displayed value as 1.25 MHz when you press [X]. If a time or voltage unit had
been required, the 2715 would have interpreted your entry as 1.25 ms or
1.25 mV, respectively, when you pressed [X]. On the other hand, had you wanted
the entry to represent a frequency of 1.25 GHz, you would have pressed [W]
instead of [X].
8. Press [CATV/APPL] [8] to return the 2715 to CATV mode.
9. Press [INPUT] [9] to turn on the calibrator.
Содержание 2715
Страница 4: ......
Страница 12: ...Table of Contents viii 2715 User Manual ...
Страница 18: ...Preface xiv 2715 User Manual ...
Страница 19: ...Introduction ...
Страница 20: ......
Страница 24: ...Introduction 1 4 2715 User Manual ...
Страница 25: ...Getting Started ...
Страница 26: ......
Страница 46: ...Getting Started 2 20 2715 User Manual ...
Страница 47: ...Operating Basics ...
Страница 48: ......
Страница 70: ...Operating Basics 3 22 2715 User Manual ...
Страница 71: ...Dedicated Controls ...
Страница 72: ......
Страница 108: ...Dedicated Controls 4 36 2715 User Manual ...
Страница 109: ...CATV Measurements ...
Страница 110: ......
Страница 181: ...Spectrum Analyzer Menus ...
Страница 182: ......
Страница 274: ...Spectrum Analyzer Menus 6 92 2715 User Manual ...
Страница 275: ...Appendices ...
Страница 276: ......
Страница 302: ...Appendix B Broadcast AM FM and TV Signal Sources B 2 2715 User Manual ...
Страница 318: ...Appendix C System Messages C 16 2715 User Manual ...
Страница 334: ...Appendix E External Input and Output E 12 2715 User Manual ...
Страница 339: ...Glossary and Index ...
Страница 340: ......
Страница 359: ......
Страница 360: ......