Kanardia Boxi II, Руководство пользователя

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Boxi II – Manual 4.4 Trim 1 and Trim 2
4.3.2 Two Microphones
When two microphones are connected to the radio, the radio must distinguish
between microphone in use. Radio will open microphone for which the button
is pressed and suppressed the other one. So, two switches are needed in Boxi,
Ptt1 and Ptt2.
Figure 5 illustrates wiring example for KRT-2 VHF radio for two microphones.
Please refer to your radio user manual for proper connection. Note: some
transceivers require an external pull-up resistor on PTT control line (refer to
radio user manual).
Figure 5: Connection example for controlling PTT-1 and PTT-2 on KRT-2
VHF radio with two microphones connected.
4.3.3 PTT as Auxiliar Output
Ptt output can also act as auxiliar switch for triggering some external device.
Figure 6 illustrates wiring example for connecting external power relay to Ptt2
output terminals. A1 terminal of power relay is connected to positive battery
lead, A2 is connected to terminal 3 of output connector and terminal 4 of
output connector is connected to negative (GND) battery lead.
In case of inductive loads (relays, small motors) user shall install freewheel-
ing diode in parallel to inductive load. Also please make sure that maximum
voltage and current are not exceeded.
4.4 Trim 1 and Trim 2
Each motor output can be configured either as a bidirectional DC motor driver
or as two independent push-pull drivers.
Figure 7a illustrates an example
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