Black Box COS-2, Manual

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7
CHAPTER 1: Specifications
Compliance —
FCC Class A, DOC Class/MDC classe A
Interface —
EIA RS-232 serial (all ports DCE)
Protocol —
Asynchronous
Data Formats —
Either 7 data bits with odd or even parity or 8 data
bits with no parity (user-selectable); always 1 stop bit
Data Rates —
115,200, 57,600, 38,400, 19,200, 9600, 2400, 1200,
and 600 bps (user-selectable)
Maximum
Distances —
50 ft. (15.2 m) to each connected device
User Controls —
(2) Front-mounted slide switches: (1) for power,
(1) for switching mode (text, graphics, or
transparent);
(2) Bottom-mounted 8-position DIP switches for
arming code and communication parameters
Diagnostic —
User-selectable power-up self-test
Indicators —
(4) LEDs: (2) Operating Mode, (2) Printer Selected
Connectors —
(3) DB25 female: (2) switched, (1) common
Leads/Signals
Supported —
Pins 1, 2, 3, 5, 7, and 20 (PGND, TD, RD, CTS,
SGND, and DTR respectively); all but Pin 1 (PGND)
are switched;
Pins 6 and 8 (DSR and RLSD [DCD]) are tied high
1. Specifications