ADTEK CM1 Series - Display Function Details; Max;Min Value Recording; Low Cut-off Functionality

CM1-SERIES
22 / 28
Rev 1.3
2018-07-02
SCALE
Default: [lOsc]: )00, [hIsc]: 5)00
Change: [lOsc]: 2%00, [hIsc]: 9(99
Reverse slop
e
9(99
[ hIsc]
)00
[ lOsc]
5)00
[ hIsc]
2%00
[ lOsc]
%
)00
%
10)00
%
5)00
INPUT
 DISPLAY FUNCTIONS
 Max / Mini recording
In order to review & trace the drifting PV, the meters
will keep the values of maximum and minimum in [ user
level] during power on. User can reset the values by
[ Mrst] in [ user level]. And it'll record new maximum
and minimum value immediately after reset.。
 Low Cut [lOcut]
Settable range from -19999~+29999 digits
Usually caused by interference, system factors or natural
phenomena when there are small values near zero point,
this feature displays zero。
If[lOcut] Setting is positive, it means that the displayed
value in [lOcut] settingsare within the absolute value is
displayed as [lOsc] settings；
I displayed I ≤ [lOcut] settings，
and displayed all are [ lOsc] settings。
Low Cut set to be +0.50
Low Cut is set for 0.50, if the PV is
from -0.50~+0.50, that display will be 0.
PV according
to input signal
Present
Value
Low cut
function
0.50
-0.50
)50
[ lOcut]
X1
X1
If [lOcut] setting show that the value is negative
in [lOcut] The following settings are displayed
as [lOcut] setting；
Display value ≤ Set value display are all set value。
Low Cut set to be -0.10
-0.10
Low cut
function
Low Cut is set for -0.10, if the PV is
under (< = -0.10), that display will be -0.10.
Present
Value
PV according
to input signal
-)10
[ lOcut]
X2
The meter’s sampling is 15cycle/sec；[ Mavg] set to
be 3 expressed。
the display update with 15 times/sec，
In the first updated display value will be same as
average function. In the next updated display value,
the function will get the new fourth sample (sample 4)
then throw away the first sample (sample 1) that the
newest 3 samples(sample 2,3,4) will be calculated for
the
updated display value.
Moving Average set to be 3
Sample 1
Sample 2
Sample 3
Sample 4
Sample 5
Sample 6
…….
In first 3 samples, Display Update Value
= (Sample 1 + Sample 2 + Sample 3)/3
Display Update Value
= (Sample 2 + Sample 3 + Sample 4)/3
Display Update Value
= (Sample 3 + Sample 4 + Sample 5)/3
Display Update Value
= (Sample 4 + Sample 5 + Sample 6)/3
…….
 Digital filter [Dfilt]
Settable range：1~99 times；
The digital filter can reduce the influence of spark
noise by magnetic of coil.
If the values of samples are over digital filter
band(fixed in firmware and about 5% of stable reading) 3
times (Digital Filter set to be 3) continuously, the meter
will admit the samples and update the new reading.
Otherwise, it will be as treat as a noise and skip the
samples.。