Using Spectrum Analyzer Features

Using limit-line Functions

To edit an existing segment, use SELECT SEGMENT to specify

the segment. Then use SELECT FREQ , SELECT AMPLITUD , or

SELECT TYPE to specify the column that you wish to edit.

ll.Press More 1 of 2 , then EDIT DONE when all values have been entered into the limit-line table.

12.Press LMT TEST ON OFF so that ON is underlined. LIMIT PASS is displayed on the cable TV analyzer screen if the measurement sweep is within the limit lines. LIMIT FAIL is displayed if the measurement sweep is not within the limit lines.

 

 

 

 

 

 

 

 

 

 

 

 

dB/

 

 

 

 

 

 

 

 

 

 

SAVE

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

LIMIT

 

 

 

 

 

 

 

 

 

 

 

 

I,+l,,LlII-)-

Edlt ilmlt

 

CENTER 300.00 MHZ

 

SPAN

50.00

MHZ

I

#RES BW 3.0 MHZ

VEW 1 MHZ

SW

20.0

msec

 

 

 

 

 

 

 

 

 

 

 

Figure 3-8. Upper and lower limit-line Testing

To turn the limit-line testing on and off, use LMT TEST ON OFF . Use

PURGE LIMITS to clear the limit-line tables. To remove the limit lines from

the display, use LMT DISP Y N AUTO . Underlining Y displays the limit lines, N turns them off, and AUTO displays them if the testing is turned on or turns them off if testing is turned off.

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