Agilent Technologies E4419B, Руководство пользователя

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Power Meter Operation 2
E4419B Power Meter User’s Guide 73
Setting Measurement Limits
You can configure the power meter to detect when a measurement is outwith a
predefined upper and/or lower limit value.
There are two types of measurement limits you can set:
•
Channel Limits - are applied to the specified input channel and are for
power measurements only.
•
Window Limits - are windows based (upper and lower) and can be applied
to power, ratio, or difference measurements. In addition, the window based
limits can be set to output a TTL logic level at the rear panel Rmt I/O port
when the predefined limits are exceeded.
Setting Channel Limits
The power meter can be configured to verify the power being measured
against an upper and/or lower limit value. The range of values that can be set
for upper and lower limits is –150 dBm to 230 dBm. The default upper limit is
90.00 dBm and the default lower limit is –90.00 dBm.
To set the limits:
1
Press , , . The current setting of the
maximum and minimum limits are displayed under the and
softkeys respectively.
2
To change either of these settings, press the appropriate softkey. The power
meter displays the current value in a pop-up window. Modify this value (see
below) until the desired value is displayed.
•
Use or to modify the digit on which the cursor is currently
positioned.
•
Use or to move to other digits.
3
To confirm your choice, press the appropriate measurement units.
Limits can be disabled and re-enabled simply by pressing .
N O T E
Only one set of limits can be on at a time, that is, Channel OR Window.
A Input Settings Limits
Max Min
Limits Off On