Frequently Asked Questions

Using a Parallel Printer with Serial Adapter

Serial/Parallel Data Converter

The RS-232 serial data adapter cannot drive a parallel printer directly. The data signals are completely incompatible. However, it is not difficult to convert serial data to a format that is suitable for a parallel printer using an external data converter.

Be aware that the conversion devices are active devices. A simple cable converter will not work. Data signals must be reconfigured electronically.

All devices that perform this function are active and they require power. Some devices are "self-powered" meaning that they derive power from unused signal lines. Some of these devices work with the RFC-1/B and some do not. If the device has an option for an external power supply then we recommend using it.

When a serial to parallel data adapter is used, the serial input of the converter must be set to the same data rate and protocol as the RFC-1/B output. The default settings are 2400 baud, 8 data bits, no parity bit and 1 stop bit: (2400,8,N,1).

Data converters are not as common as they once were but they are not difficult to find. A web search should turn up several options. See the links section for some options.