Loading
  • Black Box Products
Prices listed do not include shipping and/or tax charges. Please call for quote.

Datacom > Converters

click photo to enlarge

IC821A

Photo may show similar product

Other views

Universal RS-232 to RS-422/485 Converter with Opto-Isolation  

Don't be shocked. You can safely perform multiple serial conversions.

IC821A

Extended Double Diamond™ Warranty Available
(3 Additional Year)

Product Highlights

  • Convert RS-232 to 4-wire RS-422 or to 2- or 4-wire RS-485.
  • Features 2000-VAC isolation.
  • RoHS compliant.
  • Selectable RS-422 operation.
  • Select RS-485 for 2-wire half-duplex or 4-wire full-duplex.
  • Auto RS-485 driver control.

  • Description

    RS-232 to RS-422/RS-485 interface converter with optical isolation.


    Quick Facts

  • Convert RS-232 to 4-wire RS-422 or to 2- or 4-wire RS-485.
  • Features 2000-VAC isolation.
  • RoHS compliant.
  • Selectable RS-422 operation.
  • Select RS-485 for 2-wire half-duplex or 4-wire full-duplex.
  • Auto RS-485 driver control.

  • Further Details

    The BLACK BOX® Universal RS-232↔RS-422/485 Converter with Opto-Isolation isolates and converts RS-232 signals into RS-422/RS-485 signals and vice versa. Unlike other converters, external software is not required to control data flow. The RS-232 input is wired for DCE through a DB9 female connector, and RS-422/RS-485 signals are interfaced through a removable terminal block. To supply external power to the terminal block, you need our 120-VAC/12-VDC Wallmount Power Supply (PS1003).

    For RS-232, the connection requires RD, TD, and Signal Ground.

    In RS-422 mode, the driver is always enabled for full-duplex communications. A twisted pair is required for transmit, and a twisted pair is also required for receive. A ground reference wire is also needed. Switch settings are Switch 1: RS-422; Switch 2: Echo On; Switches 3 and 4: 4 Wire.

    In both RS-485 modes, the RS-485 driver is automatically enabled during each space state by the presence of an RS-232 signal. When the RS-232 data is in a mark or idle state, the RS-485 driver is disabled and the RS-485 data lines are held in a mark state by the bias provided by a 4.7-ohm resistor; the value of this resistor may need to be changed, depending on the termination you use.

    To connect to several RS-485 devices with minimal wire, select the unit's 2-wire, half-duplex RS-485 mode. When data is requested, the addressed device transmits and then reverts back to receive status. Switch settings for this mode are Switch 1: RS-485; Switch 2: Echo Off; Switches 3 and 4: 2 Wire.

    For 4-wire master/slave circuits, select the unit's 4-wire, full-duplex RS-485 mode. In this mode, addressed devices can receive data while transmitting data from a previous request. When used as a master in a single-master system, Switch 1 may be selected because the unit is the only transmitter in the system. When used as an RS-485 slave, the RS-232 device must provide addressability. Biasing in a master/slave system is provided by the end-of-line slave. Switch settings for this mode are Switch 1: RS-485; Switch 2: Echo On; Switches 3 and 4: 4 Wire.

    NOTE: Power Supply (PS1003) is not included, but is required.

    This product works with:
  • CAT3 Solid Bulk Cable
  • DB9 Serial Extension Cable
  • Questions? Contact our FREE Tech Support.


    Technical Specifications for Universal RS-232 to RS-422/485 Converter with Opto-Isolation:

    Data Rate (Maximum) 115.2 kbps
    Isolation 2000 VAC
    Operating Temperature 32 to 158° F (0 to 70° C)
    CE Approval Yes
    Connectors RS-232: (1) DB9 F;
    RS-422/RS-485: (1) removable terminal block
    Power Input: 10-48 VDC;
    Current Draw: 28 mA at 12 VDC (typical)
    Size 1.7"H x 0.9"W x 3.9"D (4.3 x 2.3 x 9.9 cm)
    NOTE: Power Supply (PS1003) is not included, but is required.

    This product works with:
  • CAT3 Solid Bulk Cable
  • DB9 Serial Extension Cable
  • Questions? Contact our FREE Tech Support.

    NOTE: Technical specification weight is the unit weight. It is not the packaged shipping weight. For shipping weight, please contact Black Box customer service at 877-877-2269.


    Resources for Universal RS-232 to RS-422/485 Converter with Opto-Isolation:


    Connect your Universal RS-232 to RS-422/485 Converter with Opto-Isolation with:

    Accessory: BC00200

    DB9 Serial Extension Cable, Male/Female, 6-ft. (1.8-m)

    DB9 Serial Extension Cable, Male/Female, 6-ft. (1.8-m)

    Accessory: IC820A

    Universal RS-232 to RS-422/485 Bidirectional Converter

    Universal RS-232 to RS-422/485 Bidirectional Converter

    Accessory: PS1003

    120-VAC/12-VDC Wallmount Power Supply with Bare Leads

    120-VAC/12-VDC Wallmount Power Supply with Bare Leads for CL1090A, IC821A, IC1470A, IC1473A, and IC1156A

    Double Diamond Warranty

    Standard Manufacturer's Warranty


    A warranty is included.

    Extended 1 Year Warranty Available


    Protect your purchase with an additional 1 Year Double Diamond™ warranty!
    Cost: $12.40

    Extended 3 Year Warranty Available


    Protect your purchase with an additional 3 Year Double Diamond™ warranty!
    Cost: $24.79

    Diamond

    Double Diamond™ Warranty (Standard)

    Coverage:

    Take the risk out of equipment purchases with the Double Diamond™ Warranty from Black Box Network Services.


    The Double Diamond Warranty is our no-questions-asked warranty that protects your Black Box® brand products* from accidental damage, including drops, water, and power surges.

    Most of our products come with a one- or two-year warranty. Some products—such as copper cables, manual switches, cabinets, and racks—are even guaranteed for life!

    During the warranty period, Black Box Network Services will repair or replace your damaged equipment within one week of receipt at NO CHARGE!

    Plus, get an Extended Double Diamond Warranty.


    You can also extend your warranty or protect a previously purchased Black Box® brand product* for an additional year—for only 10% of the purchase price! Or, extend your coverage for a full three years for only 20% of the purchase price!

    Ordering an extended warranty is easy: When viewing a product in your shopping cart, just select the one or three years of additional coverage in the dropdown menu under “Warranty Options.” For details, contact Customer Service at 724-746-5500.

    * Certain products may not be eligible.

    Warranty Compared

    Black Box® Double Diamond™ Warranty The Competition
    Warranty Length One Year to Lifetime, Depending on the Product. Read the fine print.
    Guaranteed for Life! Black Box® Brand Copper Cables, Manual Switches and More! No.
    Accidental Damage 100% Covered! No.
    Water Damage 100% Covered! No.
    Power Surges 100% Covered! No.
    Warranty Replacements No Questions Asked! ?
    Tech Support Hotline 100% FREE! $$$

    What’s more, we also have a 45-day, no-questions-asked return policy. Simply call Customer Service for a Return Authorization (RA) number, return your product in new condition and in the original package, and receive a full refund.

     

    Add to Cart

    Price: $138.95

    Quantity Available: 66

    Quantity

    Warranty

    Total

    Shipping Info

    In Stock - orders received before 5PM ET ship same day

    Weight: 0.406 lbs.
    HxWxD: 2.25 x 6.25 x 9.75 in.

    What’s more, we also have a 45-day, no-questions-asked return policy. Simply call Customer Service for a Return Authorization (RA) number, return your product in new condition and in the original package, and receive a full refund.


    Share It   


    Your shopping cart is empty

    Got Questions?

    Call 877-877-2269
    ...or have us call you.

    An expert will call you in
    30 seconds. It's live and it's free.









    (U.S. and Canada Only)

         
    Close



    Print
    Black Box 1-877-877-2269 Black Box Network Services