User manual - COUNTER SLB-94
filter setting (F)
t
0
, t
1
input signal
frequency
input type
50
10,0 ms
50 Hz
input
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. 6.1. 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
20
Moments of pulses counting
t0
t1
Moments of pulses counting
t0
t1
oscillations
Summary of Contents for SLB-94
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