Portable spectrum analyzer Arinst SSA-TG R2 6 April 2019
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normalization operation and connect the test device to the circuit. If necessary, reduce the attenuation
value of the attenuator.
Note. If you change the external attenuator, perform the normalization operation again.
Attention!
If the input signal level is greatly exceeded, a warning label
Dynamic range exceeded
ap-
pears on the device screen. In this case, the correct display of the input signal level is impossible. In this
case, it is necessary to increase the value of signal attenuation by external attenuators.
Attention! The use of small values of the input attenuator requires special attention, since a
signal exceeding 10 dBm can damage the input circuit of the device!
igure 71 Amplitude-frequency characteristic of the test equipment
9.3 Reflection coefficient measurement
9.3.1. In the
Generator
menu, enable the
Tracking
mode and set the
Generator Power
value in the
range from -15 to -25 dBm, depending on the equipment under study. Set the desired level of attenuation
of the
Input attenuator
in the range from 0 to -30 dB, figure 69.
Attention! The use of small values of the input attenuator requires special care, as a signal ex-
ceeding 10 dBm can damage the input circuit of the device!
Note. If necessary, use external attenuators.
9.3.2. In the setup menu frequency characteristics
Frequency
select the frequency range of the over-
view
Span
and center frequency
Center
.
9.3.3. Select
S11
mode from the
Measurement
type selection menu, as shown in figure 72.
