Download MODEL COM-2S USER MANUAL

Specifications
Communications Interface
•
I/O Connection:
9-pin male D-sub connectors.
•
Serial Ports:
Tw o sh ielded m ale D -sub 9-p in IBM AT style conne ctors com patible with
•
Character length:
5, 6, 7, or 8 bits.
•
Pa rity:
Even, odd or none.
•
Sto p Interval:
1, 1.5, or 2 bits.
•
Serial Data Rates:
50 to 115,200 (Faster or custom rates available), Asynchronous, Type
•
Address:
RS-232, RS-422 and RS-485 specifications.
16550 buffered UART.
Continuously mappable within 000 to 3F8 (hex) range of AT I/O bus
addresses.
Caution
The OUT 2 bit o f th e U A R T m ust be set low for proper interrupt driven comm unication. This bit enables or
disables the interrupts and the card will not comm unicate if the bit is pulled high.
RS232 Drivers
•
Device:
75C1 85 Q uad Line T ransceivers
•
Output Voltage:
± 6VDC minimum , current limited to 10 mA.
•
Receiver threshold:
1.5V high, 0.75 low, Maximum input ±30VDC
RS422/RS485 Differential Communication Mode
•
Mu ltipoint:
Com patible with RS422 and RS485 specifications. Up to 32 drivers and
receivers allowed on line. Serial comm unications ACE used is type
NS16550. Driver/Receivers used are type 75ALS180.
•
Receiver Input S ensitivity:
±20 0 m V, diffe rential input.
•
Com mon M ode Rejection:
+12V to -7V.
•
Transm itter Outp ut D rive Ca pability:
60 mA, with thermal shutdown.
Environmental
•
Operating Tem perature Range: 0 °C. to +60 °C.
•
Storage Te m pera ture R ang e:
-50 °C. to +120 °C.
•
Hu m idity:
5% to 95%, non-condensing.
•
Power Required:
+5VDC at 125 mA typical, -12VDC at 5 mA typical, +12VDC at 5 mA
typical, 750 mW total power consumption.
•
Size:
6 1/2" long (3 /4 leng th) by 3 7 /8" Altho ugh des igned for a half-length
slot, if the card is installed in an 8-bit XT-style slot, the card will work but
higher order IRQs 10-15 will be unavailable.
7
Manual COM-2S