Agilent Technologies 8719ES User Manual page 88

Making Measurements
Using Limit Lines to Test a Device
5. To terminate the flat line segment by establishing a single point limit, press:
ADD STIMULUS VALUE
LIMIT TYPE SINGLE POINT
Figure 1-59 shows the flat limit lines that you have just created with the following
parameters:
• stimulus from 127 MHz to 140 MHz
• upper limit of −21 dB
• lower limit of −27 dB
Figure 1-59 Example Flat Limit Line
• To create a limit line that tests the low side of the filter, press:
ADD
STIMULUS VALUE
UPPER LIMIT
LOWER LIMIT
DONE
LIMIT TYPE
ADD
STIMULUS VALUE
DONE
LIMIT TYPE
1-74
140 M/µ
RETURN
100 M/µ
−65
x1
−200
x1
FLAT LINE RETURN
123 M/µ
SINGLE POINT RETURN
DONE