6 Tables and specifications
Clarity Hardware
Fig 37: Standard Colibrick cable for two detectors
6.2 Parameters of digital inputs and outputs
Digital Outputs
The board contains eight digital TTL outputs (
OUT1
- OUT8) with
maximum current load per output
20mA
at both levels, maximum total
current load for all outputs
100mA
. Four of the digital outputs are also
designed as relay contacts (
OUT [1..4]S1/OUT [1..4]S2
). The maximum
permissible switching current is
0.5ADC
, max. contact resistance
150mΩ
,
max. voltage
100V
. The relay is on-state (closed) at level
LOW
of a
relevant digital output.
Digital Inputs
The
Colibrick
A/D converter contains four digital TTL inputs
IN1..4
.
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 to excite the toggles.
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