Burst Electronics GPI-10 - Manual (Page 2)

GPI to RS232 Converter
Introduction
Congratulations on your purchase of the Burst Electronics
model GPI-10. This product converts a momentary contact
closure (factory default) or momentary contact open (user
selectable internal jumper) to a RS232 stream of data. The
GPI-10 was originally designed to command the Burst
Electronics MCG-2 (or MCG-3) Micro Character Generator
to ove rlay, on to video, each of its 10 pages stored in
memory. Another option is to have the GPI-10 factory
programmed with RS232 data that you provide (contact
Burst Electronics for details and pricing).
The GPI-10 has 11 screw terminal connectors on the back.
One of these connectors, called COM (meaning common),
is used with each of the other connectors through a contact
closure such as a momentary push button switch to create
the trigger. Activation of the push button switch is all that is
required to transmit the preprogrammed data. The trigger
only needs to be active for 5mS (0.005 seconds). If a
trigger is active while a second trigger is activated, no data
will be transmitted. You must release the first trigger before
activating the next trigger.
There is also a model with a keypad on the top of the unit
(GPI-10K). Each of the numbered pushbuttons (0-9), when
pressed, will stream RS232 data in the same manner as
stated above. The zero (0) key is used as number 10. The
pound (#) key and the asterix (*) key are not used.
The RS232 connector is RJ11 style (standard telephone
plug). The RJ11 cable used is also a standard 4 conductor
GPI-10 GPI to RS232 Converter 2