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Procedure
To set the center frequency and span:
1
Press the FREQ/DIST hard key.
2
Toggle the Unit soft key and select Freq.
3
Press the Center Frequency soft key.
4
Enter a value by using the numeric keys. You can also use the rotary knob or the arrow keys.
5
Select the unit: GHz, MHz, kHz, or Hz.
6
Press the Span soft key, and then do one of the following:
–
To set the span manually, select Span, enter a value, and then select the unit.
–
To set the span automatically, select Full Span, Zero Span, or Last Span as needed.
NOTE
The Zero Span option is available only in the Spectrum mode. If you have selected Zero
Span, select TRIGGER > Free Run, External, GPS, Video, or Display Position.
To set the start and stop frequencies:
1
Press the FREQ/DIST hard key.
2
Toggle the Unit soft key and select Freq.
3
Press the Start Frequency soft key.
4
Enter a value by using the numeric keys. You can also use the rotary knob or the arrow keys.
5
Select the unit: GHz, MHz, kHz, or Hz.
6
Press the Stop Frequency soft key.
7
Enter a value by using the numeric keys. You can also use the rotary knob or the arrow keys.
8
Select the unit: GHz, MHz, kHz, or Hz.
To set the channel number and span:
1
Press the FREQ/DIST hard key.
2
Toggle the Unit soft key and select Channel.
3
To select the standard channel, complete the following steps:
a
Press the Channel Std soft key. The standard channel window appears.
See "Appendix C – Band, frequency & channel standard" on page 530 for more information.
b
Highlight the band to be measured by using the rotary knob, the arrow keys, or the Page
Up/Page Down soft keys.
c
Press the Select soft key or the rotary knob to confirm the selection.
4
Toggle the Link soft key to select the sweep direction and select Fwd for forward or Rev for
reverse.
5
To set the channel number, complete the following steps:
a
Press the Channel Number soft key.
b
Enter a value by using the numeric keys.
c
Press the Enter soft key or ENTER hard key to complete the entry.
The instrument automatically displays the corresponding center frequency value for the
selected channel number.
6
To set the span, complete the following steps:
a
Press the Span soft key.
b
Select the span option, from the following choices:
–
To set the span manually, select Span, enter a value, and then select the unit.
–
To set the span automatically, select Full Span, Zero Span, or Last Span as needed.
NOTE
The Zero Span option is available only in the Spectrum mode. If you have selected Zero
Span, select TRIGGER > Free Run, External, GPS, Video, or Display Position.
JD700B Series User's Guide
Chapter 4 Using Spectrum Analyzer
55
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