AC38B OPTO 22, AC38B Datasheet - Page 10

• Manufacturer Part Number: AC38B
• Description: Computers, Interface Cards
• Manufacturer: OPTO 22

Specifications of AC38B

• Peak Reflow Compatible (260 C): No
• Leaded Process Compatible: No
• Features: High-Speed RS485 Repeater, 220VAC
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

DATA SHEET
Form 519-100915
RS-232 CONNECTION
The AC38 has an RS-232 option for the host port which has been designed to connect directly to an IBM AT serial COM port. The RS-232
and RS-485 host port connections should not normally be used at the same time. Baud rates of 38,400 or less are compatible while using
the RS-232 port. The pin assignments for the RS-232 DB-9 connector are:
Pin:
With the ‘2 - 3 RVRS’ jumpers installed in the upper position, pin 2 of the DB-9 connector will be the transmit output from the AC38 and
pin 3 will be the receive input to the AC38. This is the factory installed configuration.
With the ‘2 - 3 RVRS’ jumpers installed in the lower position, pin 2 becomes the receive input to the AC38 and pin 3 becomes the transmit
output from the AC38.
* Using Jumper ‘2-3RVRS’ to choose RX/TX
Opto 22 • 43044 Business Park Drive • Temecula, CA 92590-3614 • Phone: [phone] • (800) 321-OPTO • Fax: [phone] • www.opto22.com
Inside Sales: (800) 321-OPTO • Product Support: (800)TEK-OPTO • [phone] • Fax: [phone] • E-mail: [e-mail]
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HOST RS-232 CONNECTOR FEMALE DB-9
ADAPTER CARDS
CTS - Used as IRQ output from the AC38.
No Connection
No Connection
No Connection
No Connection
RX/TX *
TX/RX *
Ground
TRADITIONAL
N/C
STANDALONE
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