Fig.5. Algorithm to change parameter values in menu „PArAS”
To exit this menu use button
.
2. Menu
„Adc”
With help of keyboard buttons, described before, user can set following parameter
values:
ADC signal amplifying – from 1 to 3, step 1
-
“Adc A”
Acquisition time for one sample (ms) – 25 ÷ 200, step 25ms
-
“t-me”
Number of bits to shift right ADC sampling result before further processing –
1÷9, step 1 –
“Shr”
All these parameters are related to stable measurement. Bigger amplifying gives
more ADC divisions for measuring range, but decrease stability. Also note that faster
measure means also more noise in measurement signal. Changes here should only be
made from engineers, which know what means ADC, how sigma-delta ADC works and
what means to shift right bits of a binary value.
Enter the menu by pressing button
while you see sign
“Adc”
on display. After
that with buttons
and
(
“Arrow Down”
/
”Arrow Up”
) user can switch to
different parameters. To change parameter value user should press button
, while
parameter is visualized. To exit from parameter value change, respectively menu
„Adc”
user should press button
.
If user wants to change parameter value, he can do that with buttons
and
while he is in mode of changing parameter. Parameter value is automatically
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