NARDA LR-01, User Manual

Page: 103 / 194

Probes Manager operating instructions 4-25
4.2.10 Menu
Includes:
- Settings:
set Average, Filter, Calibrations and Communications
- Preference: select program skin and enable the function Minimized UI
- ? (Info): software and product information
4.2.10.1 Settings
4.2.10.1.1 Filter
Settings options:
- Filter:
the LR-01 internal A/D converter feature digital filters to improve
resolution and sensitivity, as well to reducing interferences.
The filters can be selected according to the application requirements: from
the faster (F1) to the slower (F4).
To set the required filter click on the corresponding line, which turns blue.
The selected filter will be displayed in the main window.
When selecting a new filter while in HOLD mode, the filter setting
indication in the main window will be updated only after toggling to
RUN mode.
Filter(Hz): indication of the filter characteristics
•
80 Hz filter
•
40 Hz filter
•
20 Hz filter
•
10 Hz filter
Settling time (ms):
time required for getting a complete reading:
•
150 ms with 80 Hz filter
•
250 ms with 40 Hz filter
•
450 ms with 20 Hz filter
•
900 ms with 10 Hz filter
Normally a fast field measurement is required for faster response and
better stability when the field probe controls as feedback for a preset field
value the radiated power of a system composed by antenna and RF
generator.
However, as faster the measurements as higher the noise is, with
consequent reduction of sensitivity.
Slower measurements increase sensitivity but increase the response time
and the power consumption.