AC38B OPTO 22, AC38B Datasheet - Page 13

• 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

ADAPTER CARDS
TRADITIONAL
STANDALONE
DATA SHEET
page 13/14
Form 519-100915
REASSEMBLY
After all connections and jumperings are complete, the AC38 can be reassembled. It is important all the wires are routed so they will not
be pinched by the case top. After the case top has been placed on top of the case bottom, start both thumbscrews. Tighten both
thumbscrews evenly until the top case is secured.
LEDS
When power is applied to the AC38, the green LED labeled PWR should glow. If it does not, check voltage and hook up of input power.
When the LED labeled HOST is illuminated, data is being received from the host port and transmitted out the remote port.
When the LED labeled REMOTE is illuminated, data is being received from the remote port and transmitted out the host port.
When the LED labeled IRQ is illuminated, the remote port has activated the interrupt line.
CABLES
RS-485 serial lines require twisted pair cable. Maximum cable length is 3,000 feet. The recommended cable type is 2 twisted pair of 24
gauge conductors with a shield. Nominal impedance is 100 ohms and capacitance is 12.5 picofarads per foot. Typical manufacturer part
numbers are:
Manhattan Electric Cable - M3475
Belden Wire and Cable - 9729
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]