49
Fig.B.2. Diagram of the terminal stage of the universal and logical outputs
The terminal stage of the universal and logic outputs (Fig.B.2) can be
powered either from the internal power supply (active mode) or from an ex-
ternal power supply (passive mode). Typical delivery includes passive op-
eration of the terminal stage.
In the active mode and at the set value of the parameter
Active level
–
Hihg
, the output voltage in the logic mode and the pulse amplitude in the
frequency (pulse) mode, depending on the resistance of the load, can be
from 1.7 to 3.6 V. If there is no pulse, and the
Low
level is in the logic mode,
the output voltage is not more than 0.4 V. Operation of the output in active
mode is allowed for a load with a resistance of at least 200 kOhm
The terminal stage is connected to the in3.6 V power supply via
the SK1 (SK2) switch.
The length of the communication line for the universal and logical out-
puts is up to 300 m.
