Quick Start Guide for AV3680A Handled Cable & Antenna Tester
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 3.25.
Figure 3.25 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
: AV3680A 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 under
【
AMPTD
】
. After automatic ratio adjustment of default scale , the measured return loss curve
exampled in Section 3.2 is displayed as in Figure 3.26 and Figure 3.27.
Figure 3.26 Return Loss Curve under Default Scale
