Running A Limit Test; Offsetting Limit Lines - Agilent Technologies 8719ES User Manual

Running a Limit Test

1. To access the limits menu and activate the limit lines, press:
LIMIT MENU
System
Reviewing the Limit Line Segments
The limit table data that you have previously entered is shown on the analyzer display.
• To verify that each segment in your limits table is correct, review the entries by
pressing:
SEGMENT
• To modify an incorrect entry, refer to the
earlier in this section.
Activating the Limit Test
To activate the limit test and the beep fail indicator, press:
LIMIT MENU
System
Selecting the beep fail indicator
NOTE
approximately 50 ms of sweep cycle time. Because the limit test will still work
if the limits lines are off, selecting
The limit test results appear on the right side on the analyzer display. The analyzer
indicates whether the filter passes or fails the defined limit test:
• The message FAIL will appear on the right side of the display if the limit test fails.
• The analyzer beeps if the limit test fails and if
• The analyzer changes the color of the trace to flashing red where the measurement
trace is out of limits.
• A TTL signal on the rear panel BNC connector "LIMIT TEST" provides a pass/fail
(5 V/0 V) indication of the limit test results.

Offsetting Limit Lines

The limit offset functions allow you to adjust the limit lines to the frequency and output
level of your device. For example, you could apply the stimulus offset feature for testing
tunable filters. Or, you could apply the amplitude offset feature for testing variable
attenuators, or passband ripple in filters with variable loss.
This example shows you the offset feature and the limit test failure indications that can
appear on the analyzer display.
LIMIT LINE
and
LIMIT LINE
Using Limit Lines to Test a Device
LIMIT LINE ON EDIT LIMIT LINE
"Editing Limit Segments"
LIMIT TEST ON BEEP FAIL ON
is optional and will add
BEEP FAIL ON
LIMIT LINE ON
BEEP FAIL ON
Making Measurements
procedure, located
is also optional.
has been selected.
1- 79