Your KXPA100 must be connected to a personal computer Serial Port or USB Port before firmware can be sent.
A KXUSB interface cable for USB plugs into a USB port on your personal computer. Insert the right-angled 3.5 mm TRS plug into your KXPA100 back panel RS-232 (PC) connector.
Alternatively, you may also use a KXSER serial cable that has a 9-pin D shell RS-232 connector on one end and a 3.5mm TRS plug on the other, or you may create a suitable cable using a DB-9 female connector and a 3.5mm TRS plug. The connections are:
DB9 pin | 3.5mm TRS |
---|---|
3 | tip |
2 | ring |
5 | sleeve |