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3. As the attenuator to be measured has interface with diameter of 3.5mm, N-3.5mm adapter needs to be connected to the test
poet of Analyzer, and then use the calibration kit (option) with diameter of 3.5mm to calibrate the Analyzer as described in
section 3.1.
4. After calibration, connect the measured attenuator to Analyzer and the match load to the terminal of attenuator as shown in
Figure 3.14.
Figure 3.14 Attenuator Measurement Connection Diagram
Make some corresponding adjustments on the displayed amplitude according to amplitude set-method described in Section 3.5; we
can find that the return losses of attenuator are all below 30dB. Based on the test data, designer can confirm attenuator index by
contrasting with design index, as shown in Figure 3.15.
Figure 3.15 Return Loss Test of 10dB Attenuator
3.5.
Test Skills
As there have given a detailed description to the test steps for several test formats, this part will make a brief introduction on some
common skills used in the measurement process.
1.
Amplitude:
S3101A/B provides three ways for amplitude adjustment: First, through the top and bottom adjustment; Second,
through automatic ratio adjustment; Third, through the adjustment on reference value, location and ratio. In order to make a clearer
and more intuitive observation on the measured curve, the amplitude of displayed curve can be adjusted by adopting any ways
