Valleylab Force FX-C - Serial Port; RF Activation Port; Expansion Port; Low Frequency (50-60 Hz) Leakage Current

Force FXTM-C Service Manual
Performance Characteristics
Serial Port
RS-232 compatible; 9600 baud, 8 data bits, 1 stop bit, no parity
The 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).
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
,,,,Then making EEG or EeG measurements.
Expansion Port
The IS-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 RJ< output
• Pin 10 - RF current: output signal proportional to active RF current
• Pin 11 - RF voltage: output signal proportional to active RP 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)
low Frequency (50-60 Hz) leakage Current
Enclosure source current,
ground open
Source current, patient
leads, all outputs
Sink current at high line,
al! inputs
< 300 ~A
Normal polarity, intact ground: < 1 a ~A
I~orrnal polarity, ground open: < 50 ~A
Reverse polarity, ground open: < 50 ~A
< 50 ~A
3-5