User manual - COUNTER SLIK-N118
filter setting (F)
t
0
, t
1
input signal
frequency
input type
60
8,3 ms
60 Hz
70
7,2 ms
70 Hz
80
6,3 ms
80 Hz
90
5,6 ms
90 Hz
Tab. 6.2. Time periods t
0
,t
1
depend on filtered frequency.
When the filter is turned off , time periods t
0
i t
1
must be longer than 50
µ
s (see Figure 6.4),
and maximum counted frequency is equal 10 kHz.
a)
b)
Figure 6.4. The traces of signals:
a) without contacts oscillations, b) with contacts oscillations
19
Moments of pulses counting
t0
t1
Moments of pulses counting
t0
t1
oscillations
