PSI BOX Reference
Setting Up The PSI BOX
The IEEE plug is an industry standard gold plated and
EMI shielded connector. The IEEE base address is front panel
DIP switchable in the range 0-15. In addition, certain modes use
address 15 to select listen only or talk only operation.
The Centronics Parallel port is an IBM PC printer
compatible port. The Centronics Parallel port is an IBM PC
compatible printer port and may be either an input or an output.
The connector is identical to PC parallel port LPT1.
The RS232 port signals are the industry standard +/- 12
Volt level. The serial port is an IBM PC serial compatible port.
The connector has the same pin outs as the IBM PC serial port
COM1:
The serial port is bi-directional. The RS232 handshake can
be either a hardware handshake controlled by the DSR, CTS,
DCD and DTR, RTS pins or by the XON/ XOFF software
handshake. The baud rate and parity options are selectable from
either the front panel or under software control from the IEEE
port.
Baud rates of between 75 to 19200 baud are available.
Parity may be off or on, even or odd. The may be either 7 or 8
data bits per word.
The internal buffer is 32K ram and may be disabled by
front panel DIP switch control. A valuable aide in debugging
your communication problems!
The main power inlet is a fused switchable unit.
Fuse rating 3 Amp. The fused connector contains a spare 3 Amp
fuse, just in case you might need it. The PSI BOX even comes
complete with a fused 13 Amp plug.!
The PSI BOX is a slim, brick shaped and is 10.3 inches
long x 2.4 high x 5.5 wide. (262 long x 61 high x 140 wide
millimetres.) The PSI BOX weighs 5 lb, that is 2 kg.
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Chapter 1
