Using Spectrum Analyzer Features

Using Limit-Line Functions

Procedure for Creating an Upper and Lower Limit Line

This is a basic procedure for creating a sample of upper and lower limit lines. The CAL OUT signal is used for the test signal.

1.Press Lj).

2.Since this procedure uses the calibration signal as the test signal, connect the cable TV analyzer’s CAL OUT to the INPUT 75 61 with an appropriate cable.

3.Set the cable TV analyzer controls as follows:

FREQUENCY] 300 MHz

&@ 50 MHz m3MHz

4.Press c-1 and Limit Lines to access the limit-line menus.

5.At this point you may need to do the following:

a. To save the current limit-line table, press SAVE LIMIT and enter the register number. Then press, Cm].

b. To clear an existing limit-line table, press Edit Limit ,

Edit; Upper , and More 1 of 2 . Then press PURGE LIMITS two times.

6.(If necessary, press Edit Limit to access the LIMITS FRq TIME

softkey.) Press LIMITS FRCj TIME so that FRQ is underlined to select the frequency type of limit line, if it is not already selected.)

7.Press Edit Up/Low to create upper and lower limit lines simultaneously.

8.Press More 1 of 2 , LIMITS FIX REL so that FIX is underlined to select the fixed type of limit line (if it is not already selected.)

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