OpenTracker USB User’s Manual
4
4.
Jumper Settings
Three settings are controlled by the jumper block on the circuit board.
‘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, Puxing, and Baofeng.
‘Vout’
– Selects GPS output voltage on pin 4 of the serial connector. This is set to
5v by default. Valid positions are horizontal for 5v and vertical to pass the
OTUSB’s unregulated supply voltage (typically 12v) straight through to pin 4.
Use the 5v setting for all GPS receivers supplied by Argent Data Systems.
If you don’t expect to use a 12-volt GPS receiver, clipping the pin marked ‘12’ is
highly recommended to eliminate the possibility of accidentally setting the
jumper to the wrong position and destroying the GPS receiver.
