Sensor Operation
10
PTT Settings
PTT is used to prevent spurious alarms during periods when the transmitter is
not transmitting because alarm functions for that channel will only be possible
when the transmit button is engaged.
PTT is controlled on the settings page, PTT may be set to normally open or
normally closed logic, or disabled, see
The PTT terminals on the 4043E must be connected to the transmitter in the
correct logic state for PTT to operate correctly.
Figure 10 PTT Options
Zero Sensor
Zero Sensor is used if the 4043E sensor’s readings are not zero when the RF
transmitter connected to the sensor is off.
The Zero Sensor option merely applies a negative offset to the power reading
based on the value the sensor displays when RF is off.
Figure 11 Zero Sensor Option
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