HamGadgets ID-O-Matic III, Assembly, Setup And Use Manual

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2014-01-17 ID-O-Matic III 16
I/O Signal Polarity
On this screen you will be able to customize the ID-O-Matic for your hardware setup. All of the
input and output signal polarities are settable from this menu. You can also select whether any
of the available signals are to be used for cooling fan control.
COR and ALT MSG Polarity: For each of the input signals (COR and ALT MSG), set the pin
to 0 for active-LOW or 1 for active-HIGH. Active-LOW means the input signal is normally at a
higher voltage level when idle, and goes to ground when active. Active-HIGH means it’s
normally grounded and goes to a positive voltage when active.
Other Polarity settings: For the output signals (PTT, BCN, ID and CW), select 0 for active-
LOW or 1 for active-HIGH. In this case active-LOW means the signal will float when inactive,
and be grounded when active (similar to a relay output to ground). Active-HIGH means the
output is normally grounded, and goes to a high impedance open state when active. If your
equipment needs to be driven with a positive voltage, you may need to add a pull-up resistor.
Because of the wide range of equipment to which your ID-O-Matic III may be connected, it is
impossible for these instructions to cover model-specific connection information.
Fan Control: You may wish to use your ID-O-Matic III to control a cooling fan or other device.
The fan output can be selected to appear on any output signal that you don’t plan to use (the CW
output is probably most common). The Fan Control setting can be set to any of the following:

B: Use the BCN (Beacon indicator) output as fan control

C: Use the CW (CW on/off keyed) output as fan control

I: Use the ID (ID indicator) output as fan control

N: None, don’t use fan control