Apache Labs ANAN-G2 - Biascheck

ANAN-G2 Manual Page 24 of 35
4.3.3 Biascheck
This is a simple application for setting up driver and PA bias currents. It puts the radio into transmit
with no signal present, so the potentiometers to adjust bias can be set. This is not intended for user
operation. The program may already be installed onto your linux desktop. If not you can run it
simply from a linux command prompt. Open a command window then type:
• cd github/Saturn/sw_projects/biascheck
• ./biascheck
Usage:
Enter TX
When checked, the radio enters TX with no signal present. Any current in the
driver stage or PA is purely the bias current.
Driver Current
Shows the current into the driver stage on the Saturn board. Each bias
potentiometer on Saturn should be fully anticlockwise initially; advance the 1
st
to
obtain 0.1A reading then advance the second until 0.2A is displayed.
PA Current
Shows the current into the PA stage on the RF board. Each bias potentiometer on
the RF board should be fully anticlockwise initially; advance the 1
st
to obtain 1.0A
reading then advance the second until 2.0A is displayed.
Close
Close the application.