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2.8 Testing the programmer hardware
a
Apply power to the programmer
 Programmer circuitry powers up to 5.0V.
If you have a ‘Current Limit’ on your power
supply, turn it to approximately 20mA and
then gradually increase it until the
programmer ‘FAIL’ LED starts to FLASH.
 Target Vcc LED illuminates
The LED will illuminate if a target voltage
between 3.0 and 5.0V is detected.
 FAIL LED flashes to indicate that the
programmer has rebooted. *** The FAIL LED no
longer flashes with firmware version 2.46 or
greater)
2.9 Re-assembling the programmer
a
Re-fit lid to programmer
b
Re-fit the four screws in the back of the case
c
Ensure that the PC, programmer and Target
System power is switched OFF.
The ISP Cable should fit through the slot in the
end panel.
Please note:
• The FAIL LED will flash when you initially power up the programmer if you are running
firmware 2.46 or below.
• If you are running firmware version 2.46 or greater the FAIL LED will no longer FLASH.
• To clear the FAIL LED condition, press the <No> key.
• If there are no Programming Projects loaded into the Programmer – Flash Memory Store, the
FAIL LED will continue to FLASH until at least one Project is uploaded.
EPSILON5 MKIV - USB Programmer - User Guide V1.05 19/09/12
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