14
TROUBLESHOOTER
Board Will
Not
Communicate
with PC
Bad SPI or USB Connections
Check/replace cables, LEDs should display on connection
Make sure the board is getting power
Bad or Conflicting Virtual Comm Port on PC
See the
Software Installation
section - reinstall driver software, or,
change the USB-Serial com port number in Device Manager if there
is a conflict
Incorrect Settings on Option Switch
Set OPT1 to the ‘On’ position
Noisy or
Erratic Signal
Noisy Power Supply -
try a different USB port or PC
Cables or Board too Close to Strong Noise Source
(such as a power line or
switching noise source)
Increase the distance from E6248 to the noise source
Place a grounded metal shield between the noise source and the
QMatrix™ board
QMatrix™ Board is not Mechanically Stable
Prevent board from moving around
Strong RFI from a Transmitter or Adjacent Digital Product
Remove the noise source or shield against it
