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the top and bottom amplitude values as 50dB and -50dB or 450º and -450º. The specific steps for amplitude settings via these three
automatic modes are as follows:
1) Press
【
Ampt
】
key to enter amplitude menu;
2) Click the touch screen [Auto Scale], [Full Scale] or [Default Scale] menu, and then the application software will automatically set to
the corresponding amplitude value.
Figure 5-4 Auto Scale of Amplitude
Use the amplitude reference value, reference position and scale setting: In order to better observe the measurement curve, the
Analyzer supplies operators with reference value, reference position or scale settings. The specific settings are as follows:
1) Press
【
Ampt
】
key to enter amplitude menu;
2) Click the touch screen [Ref Value], [Ref Pos] or [Scale] menu to input the appropriate amplitude reference value, reference position
or scale by turning the knob,
【
↑
】
or
【
↓
】
or numeric keys, and then press
【
Enter
】
key to complete inputting such items.
5.4.
Sweep
Sweep/Setup mainly focuses on the settings of auxiliary parameters of the current test, including sweep time, sweep points, average
smooth and IF bandwidth.
5.4.1.
Set trigger mode:
1) Press
【
Sweep/Setup
】
key to enter Sweep/Setup menu bar;
2) Press the touch screen [Trigger Mode Cont Single] menu to complete the switching of the current trigger mode. When switched to
“Single”, the Analyzer will finish the sweep after completing primary sweep at the set frequency range.
5.4.2.
Set sweep mode:
S3101 Cable & Antenna Analyzer provides two sweeping modes including linear sweep and list sweep, and operators can realize the
switching of sweep modes by [Sweep Mode Linear List] menu. Before realizing the list sweep, first edit the list to build a list of information
to be swept, and then use [Sweep Mode Linear List] to do switching. The list sweep steps are as follows:
1) Press
【
Sweep/Setup
】
key to enter Sweep/Setup menu bar;
2) Click the touch screen [Edit List] menu, and the menu bar will switch to the Edit List menu bar, as shown in Figure 5-5. Click the
[Add Seg] to add a waveband to be swept in the list box; in this case, operators can set this segment of list by [Start Freq], [Stop
Freq] and [Points]. If the list is already exited, operators can set the parameters with correspondence to the segments by [Seg ID] or
