HP 8712C User Manual

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Making Measurements
Measuring Transmission Response
View and Interpret the Transmission Measurement
Results
1. RI view the entire measurement trace on the display, press
@Xii-- Awmiw~~s .
2. ‘lb interpret the transmission measurement, refer to Figure 3-6 or
your analyzer’s display if you are making this measurement on your
instrument.
a. The values shown on the horizontal axis are the frequencies in MHz.
The values shown on the vertical axis are the power ratios in decibels
(dES) of the transmitted signal through the device divided by the
incident power. ‘lb display the result in logarithmic magnitude format
(designated by “Log Mag” at the top of the measurement screen), the
analyzer computes the measurement trace using the following formula:
P
Transmission (&I) = 10 log F
( >
znc
where Ptrans =
the power transmitted through the device and
where Pin= = the incident power.
b. A level of 0 dB would indicate a perfect through cable or device (no
loss or gain). Values greater than 0 dB indicate that the DUT has gain.
Values less than 0 dB indicate loss.
3. lb quickly determine the filter’s minimum insertion loss, press @iEKK)
Mwk~r Search Max Search Mlm -> Max.
4. Note the marker readout in Figure 3-6 provides the frequency and
amplitude of the minimum insertion loss point.
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HP 8712C Specifications

General

Brand	HP
Model	8712C
Category	Measuring Instruments
Language	English