September 5, 1997
In some instances when using the AnswerMAN
Jr. and the development board connected to a PC’s RS-232 serial
port, it is possible that the module will not reset or power-up
correctly. Because the AnswerMAN requires such a small amount
of power, a PC with a strong serial port is capable of providing
enough power to the module so that it actually runs without
the main power supply being connected. The problem shows itself
as incomplete or incorrect sign-on messages and/or time-out
errors when writing data to the EEPROM.
If you experience these symptoms, the problem
can be corrected by either of the following methods:
- Install a 470W resistor between +5V and
ground on the development board.
- Disconnect the development board from the
serial port before resetting it or powering it up