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signals as shown in Table 5-1:
Table 5-1 Comparison of Detection Methods
Detector Mode
Measure
Nor
(normal
detection)
This is the common method of detector. The signal and noise base can be seen
simultaneously without losing any signal.
Positive peak
detector
Make sure that no peak signals are missed, which is suitable for measuring signals
that are very close to the noise base.
Negative peak
detector
In most cases, it is used in self-tests and is rarely used in measurements. It can fully
reproduce the modulation envelope of the AM signal.
Sample detector It is suitable for measuring noise signals and can measure noise better than normal
detection methods.
Mean detector The data in the sampling interval are averaged.
Root mean
square detector
The root mean square averaging process is performed on the data in the sampling
interval.
Steps for setting the detector mode are:
a) Press
【
BW
】
→ [Detector Auto Man >] , the default is Auto. If the detector is set to Auto, the
microwave analyzer automatically selects the detector type based on different measurements.
b) Press [Auto], [Normal] , [PosP] , [NegP] , [Smp] , [Avg] , [Rms] to select the detector type.
c) Press [Back] to return to the previous menu.
The current detector type is displayed on the left side of the screen.
Section 5 Sweep Settings
This Section illustrates the sweep-related settings in the spectrum analyzer mode of the
S5105D/E/F microwave analyzer, including sweep time settings, sweep type selection and how to use
the list sweep. Press [Swp] in the main menu area of the touch screen to load the sweep related menu.
1
Set Sweep Time
The sweep time is the time required for tunning the microwave analyzer local oscillator within selected
frequency spacing. The sweep time directly affects the time it takes to complete a test, but does not
include the dead time between completing a sweep and starting the next sweep, and may vary from
span, resolution bandwidth and video bandwidth. In the S5105D/E/F microwave analyzer, user can
control the sweep time, but cannot arbitrarily set the sweep speed if he/she wants to maintain test
accuracy, which is subject to the resolution bandwidth, video bandwidth and selected frequency range.
The sweep speed depends on the frequency range, while the sweep interval depends on the
sweep time. The sweep speed is subject to the stability or resolution bandwidth of the system and the
response time of video bandwidth filter. If the microwave analyzer sweeps too fast and the filter has no
time response, the measurement results are not accurate. In this case, the display of the microwave
analyzer looks blurry and the spectral line is wider than normal.
The S5105D/E/F microwave analyzer has two modes for setting the sweep time: automatic and
manual. The default setting is automatic mode. In automatic mode, the microwave analyzer will use the
quickest sweep time after the measurement setup is completed. In the manual mode, the sweep
time can be increased to meet specific measurement needs. If the measurement is set under certain
condition, the sweep time that can be set should be greater than or equal to the sweep time in the
automatic mode. Steps for setting the sweep time are as follows:
a) Press [Swp] ;
b) Press the [Swp Time Auto Man] to switch the sweep time between Auto and Manual. The
underline marks the current state. If the sweep time is automatic, the microwave analyzer
automatically sets the sweep time to the fastest according to the current instrument status, and the
screen displays the fastest sweep time under the current setting; If the sweep time is manually set,
the sweep time value can be input at this time ;
