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Tracker3 User’s Manual 10

7. Jumper Settings

A jumper block on the OT3m board provides the following settings:

Voltage select – ‘5’. Connects pin 4 of the serial connector to the

output of the 5-volt regulator. Use this setting to supply power to

a 5-volt GPS receiver or other external device.

Voltage select – ‘12’. Connects pin 4 of the serial connector to the

input of the 5-volt regulator. Use this setting to supply

unregulated power from the radio connector to a GPS receiver, or

to supply power to the tracker from the serial connector.

‘HI’ – This jumper sets the audio output level to the high range.

This is needed mostly for mobile radios, especially some

commercial models.

‘HT’ – Selects if push-to-talk signaling through the audio output

line is enabled. Use this jumper with most HTs by Icom, Yaesu,

and Alinco handhelds, but not Kenwood.

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Argent Data Systems OpenTracker USB Manuale Utente Pagina 12