44
4.18.2. Setting Up Pins of "Output" Type
The pin set to "output" can operate in normal or inverse mode. In the normal mode the output high level (lev-
el "1") is regarded as an active signal, and the low level (level "0")
– a passive one. When enabling the inverse
mode, output high level corresponds to a passive signal, and the low level
– to an active signal.
To select an event by which the modem will produce an active or passive output signal, it is required to spec-
ify the output operation algorithm. The input operation algorithm (see 4.2) is set in the tab
Settings
Ad-
vanced
GPIO
of the ATM Control utility.
