Valleylab Force FX-8C, Service Manual

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Performance Characteristics
Technical Specifications
Force FX-8C Service Manual 3-5
Serial Port
RS-232 compatible; 9600 baud, 8 data bits, 1 stop bit, no parity
RF Activation Port
The RF activation port is a subminiature telephone jack attached to the
contacts of a small relay. The contacts are closed when the output is
energized and open at all other times. This port provides a means to tell
other equipment that RF current is being generated. This may be useful
when making EEG or ECG measurements.
Expansion Port
9-pin connector supports
the following signals Pin 2 – isolated transmit
(serial data output transmit line)
Pin 3 – isolated receive
(serial data input receive line)
Pin 5 – isolated ground
(reference for transmit and receive).
15-pin connector; supports
the following signals • Pin 2 – isolated transmit
(serial data output transmit line)
• Pin 3 – isolated receive
(serial data input receive line)
• Pin 5 – isolated ground
(reference for transmit and receive)
• Pin 9 – RF disable: input signal which, when activated by
an external device, disables active RF output
• Pin 10 – RF current: output signal proportional to active
RF current
• Pin 11 – RF voltage: output signal proportional to active
RF voltage.
Expansion power (from the
low voltage power supply) + 5 V (pin 6), – 12 V (pin 14), + 12 V (pin 15), and ground
(pins 12 & 13)