Setting the jumpers
You need to set two jumpers on the ABDX PCB in order to deliver the correct power and ground. The different BBD types require these on specific pins and they
are different between devices.
The MN3005 and MN3008 require power on pin 1 and ground on pin 5. Set the jumpers on the PCB like this:
The MN3205, v3205 and BL3208B require power on pin 5 and ground on pin 1.
Setting these jumpers also changes whether the output resistors on the BBD (pins 3 and 4) are pull-up or pull-down. Again, these will be different between the two
groups of devices.
NOTE: If you build the ABDX for one type of device and then later put in a different type you may have to switch the jumpers and/or the voltage supply
depending on which group they fall under. You will also need to re-bias the BBDs if they are switched.
Summary of Contents for ABDX
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