Programming Adapter User’s Guide
QF4A512-PA
Rev A5, Feb 09
3
www.quickfiltertech.com
4) Plugging in the adapter board:
See figure 3 for alignment. The QF4A512 programming adapter should be pushed down evenly not at an angle.
Note, by adding the 3 additional headers to the development board signals will be brought up to the programming
adapter board through J1-J4. See below.
Adding the three additional
headers brings the signals from the
BNC connectors up to the
programming adapter board.
Note: R2,R6,R11,R15
create the single
ended configuration
for the PA board and
development board
Align the programming
board as shown when
plugging it into the
development board
Figure 3
5) Input level and protection scheme:
The QF4A512 programming adapter is DC coupled with input voltage protection only. With no modifications the
largest signal is 2Vpp AC coupled. Voltages larger than 3.0V will activate the internal protection diodes which are
series limited with 100ohms. These resistors can be changed to simulate the target system including a spot to add
AC coupling.
6) Programming example:
Step 1: Plug in the USB cable to the development board. Make sure the programming adapter board is powered
either from the development board or through the AC Adapter plugged into CN4.
