User manual

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4. Programming the GSC300 Settings
The GSC300 cannot be powered while using the parallel port or USB programmer. The
GSC300 could be damaged.
Programming the GSC300 requires a special USB programmer supplied by Dynagen. The part
number is GSC300-USB-PGMR.
Detailed instructions on the PC interface are included with the GSC300 Configurator software. A
sample interface screen is illustrated on the following page.
General Programming Notes
1. The GSC300 must be unpowered when programming. Ensure it is not connected to battery or
other power source.
Parallel Port Programming Note
1. The parallel port programmer has been discontinued.
2. Black wire should face towards center of GSC300.
USB Programming Note
1. Blue wire should face towards centre of GSC300.
2. If the presto ON-LINE LED it not lit and the presto USB cable is plugged in, the USB drivers
did not properly install. Go to the device manager and locate “ASIX PRESTO Programmer”
under “Universal Serial Bus Controllers”. Right click on it and select Update Driver or similar.
The drivers are located in the directory you installed the PC Interface to. For Vista and 7 they
should have been placed on your desktop during installation.
Both the parallel port and USB programmers directly power and program the EEPROM on the
GSC300. The GSC300 on board microcontroller is not involved so it is not simple serial
communications like the GSC400.