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Clarity - INT9 A/D converter Tables and specifications
33
5.2 Parameters of digital Inputs and Outputs
The card contains eight digital TTL outputs
(OUT1-OUT8) with a maximum permissible
current of 20 mA at both levels. The first four
outputs are also designed as relay contacts
(OUT1S1/OUT1S2- OUT4S1/OUT4S2).
The maximum permissible current is 100 mA,
the maximum-switched voltage is 100 V and
the contact resistance is 150 m
Ω
. The relay is
onstate (closed) when there is a LOW level of a
relevant digital output.
The card contains 4 digital inputs IN1 to IN4.
To suppress contact bouncing the digital
inputs are equipped with monostable toggles
that prolong any change affecting the input to
at least 200 ms (to ensure that the station is
able to detect it).
A pulse with duration of at least 1 ms is
necessary in order to excite the toggles.