4. Reconnect your test device.
5. To better view the measurement trace, press:
Scale Ref
AUTO SCALE
Creating Flat Limit Lines
In this example procedure, the following flat limit line values are set:
Frequency Range
127 MHz to 140 MHz
100 MHz to 123 MHz
146 MHz to 160 MHz
The minimum value for measured data is 200 dB.
NOTE
1. To access the limits menu and activate the limit lines, press:
System
LIMIT MENU
CLEAR LIST
YES
2. To create a new limit line, press:
ADD
The analyzer generates a new segment that appears on the center of the display.
3. To specify the limit's stimulus value, test limits (upper and lower), and the limit type, press:
STIMULUS VALUE
UPPER LIMIT
LOWER LIMIT
NOTE
You could also set the upper and lower limits by using the
DELTA LIMITS
MIDDLE VALUE
This would correspond to a test specification of 24 3 dB.
4. To define the limit as a flat line, press:
LIMIT TYPE
FLAT LINE
Power Range
27 dB to 21 dB
200 dB to 65 dB
200 dB to 65 dB
LIMIT LINE
127
M/
21
x1
27
x1
DONE
keys. To use these keys for the entry, press:
24
x1
RETURN
Using Limit Lines to Test a Device
LIMIT LINE ON
EDIT LIMIT LINE
MIDDLE VALUE
DELTA LIMITS
3
Making Measurements
and
x1
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