Anritsu S113C Guide de l'utilisateur télécharger pdf (Page 57)

Defining an UPPER Limit

An upper limit is one where the measurement fails if the data appears ABOVE the limit

line.

Press the

BEEP AT LEVEL soft key, if necessary, so that the status window says:

FAIL IF DATA IS: ABOVE LINE.

Defining a LOWER Limit

A lower limit is one where the measurement fails if the data appears BELOW the limit line.

Press the

BEEP AT LEVEL soft key, if necessary, so that the status window says:

FAIL IF DATA IS: BELOW LINE.

Adjusting Segmented Limits

Segmented limit lines are defined separately as five upper limit segments and five lower

limit segments. This allows the definition of a spectral mask.

A limit segment is defined by its end points. That is, starting frequency, starting amplitude,

ending frequency, and ending amplitude. This procedure describes the setting of two upper

limit segments. The steps can be carried over to the other upper limit segments as well as to

the lower limit segments.

Step 1.

Press the LIMIT key.

Step 2. Press the

MULTIPLE UPPER LIMITS soft key.

Step 3. Press the

SEGMENT 1 soft key.

Step 4. Press the

EDIT soft key. The status window will display the value of the segment

endpoints:

ST FREQ, ST LIMIT, END FREQ, END LIMIT. The current parameter

is highlighted. When you first press the

EDIT soft key, the value of the ST

FREQ parameter is highlighted.

Step 5. Either enter the value using the numeric keypad or scroll the limit line using the

UP/DOWN arrow key.

Step 6. When editing the start frequency or end frequency, the unit terminator keys

(

GHz, MHz, kHz, Hz) will appear on the soft keys. Press the appropriate termina

tor key to continue. The

ST LIMIT parameter will now be highlighted.

Step 7. Either enter the value using the numeric keypad or scroll the limit line using the

UP/DOWN arrow key.

Step 8.

Press the ENTER key to continue.

Step 9. Repeat Steps 5 and 6 for the end frequency.

Step 10. Repeat Step 7 for the end limit.

Step 11. Press the

NEXT SEGMENT soft key to move on to segment 2 (If the NEXT SEG

MENT

soft key is not available, press ENTER). If the status of segment 2 is

OFF, pressing the

NEXT SEGMENT soft key will automatically set the start

point of segment 2 equal to the end point of segment 1.

Step 12. Repeat Steps 4 through 11 for the remaining segments.

Step 13. When the final segment is defined, press the

EDIT soft key again to end the edit

ing process.

3-14

Chapter 3 Getting Started

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Anritsu S113C Guide de l'utilisateur Page 57

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