User`s manual

Tracker3 User’s Manual 31
equal to). Clicking on the button showing the comparison operator toggles it
between these two settings.
The Altitude and Speed values are compared with those indicated by the GPS.
Onboard sensors provide readings for comparison with the Temperature and
Voltage fields. ADC Input refers to the extra unused analog-to-digital converter
input on X1 pin 9. The possible values are 0 to 255, corresponding to a range of 0
to 5 volts. The ‘jumper’ setting refers to the state of the IO input on the accessory
port. The input is ‘On’ when the IO pin is pulled to ground, as through a toggle
or pushbutton switch. An external pull-up resistor (typically 4.7k ohms) should
be used to pull the IO pin to 5v. The GPS Fix is considered invalid if it has been
more than 20 seconds since the last valid position was received from the GPS
unit.
The selected tests are run once every second. If the conditions are met, the new
profile is loaded. If Transmit when switching to this profile is checked in the new
profile, a packet is transmitted immediately.
If the conditions in both profile panes are met, the tracker will switch between
the two profiles each second and may cause undesired operation.
17.13. Digipeater Settings
Access the Digipeater Settings screen using the ‘Digi Config’ button.