User manual - RATEMETER STI-94
7.3.3.
“ inPUt
” menu
This menu contains options of pulse input configuration:
“FrEq”
- maximum permitted frequency of pulses delivered to the input. This parameter
is expressed in Hz. And can be set to one of all values showed in
Minimum
permitted
duration time of Low and High states are related to every
value of
“FrEq”
parameter. If particular state is shorter than showed in
it is interpreted as disturbance and ignored.
Parameter
“
FrEq” (Hz)
Minimum duration
of low and high states
Permitted duty cycle
for max. frequency
”10”
5 ms
5%-95%
”15”
3,4 ms
5%-95%
”20”
2,5 ms
5%-95%
”30”
1,7 ms
5%-95%
”40”
1,3 ms
5%-95%
”50”
1 ms
5%-95%
”100”
500
m
s
5%-95%
”300”
167
m
s
5%-95%
”1 000”
50
m
s
5%-95%
”3 000”
33
m
s
10%-90%
”10 000”
33
m
s
33%-66%
”50 000”
not controlled
not controlled
Tab.7.1.Allowable settings of
“
FrEq”
parameter, and
related with them minimum durations of logical states
“PULSen”
- input divider, can be set in range 1 to 19 999. This parameter defines the
number of pulses per single revolution .
Value 0 is interpreted by firmware as
1
pulse/rev.
This parameter must be set correctly to let device works properly.
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