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* Simultaneous 7-Port Cascade* Model 8982, DB25 7-to-1 Broadcast Sharing Unit, Catalog #302077

    Sharing Unit, Cascade PortSharing Unit, Cascade PortSharing Unit, Cascade PortSharing Unit, Cascade PortSharing Unit, Cascade Port
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    • Sharing Unit, Cascade Port
    • Sharing Unit, Cascade Port
    • Sharing Unit, Cascade Port
    • Sharing Unit, Cascade Port
    • Sharing Unit, Cascade Port
Base Price:
Catalog No: 302077
Model No: 8982
Product Type:Switches: Copper
Cable Type/Port Connector:DB25 Switch Ports
Channels per Switch Chassis:1
Electronic Switches/Power Required:PathWay® Copper
Pins Switched:2 thru 8, 20
Comments:Port 1-7 devices are polled for data
Feature:Run asynchronous, half, full duplex


Shipping Terms

Shipments are made via UPS Ground, unless otherwise specified. Freight charges are prepaid and added to your invoice. We can estimate the freight costs for you.

We can ship freight collect on your account, just provide your UPS Account Number.

We can also ship via the carrier of your choice. Provide the details and your account number.

Products shall be shipped F.O.B. Electro Standards' facility. Title to and risk of loss or damage to the products shall pass to you upon Electro Standards delivery of the products to a carrier for shipment. Title to software will remain with the applicable licensor. Electro Standards' prices do not include shipping and handling charges. Electro Standards reserves the right to use its own discretion in the manner and routing of shipments. Electro Standards shall be permitted to deliver products in separate lots.

Shipping Return Policy

  • To return an item, contact Electro Standards at 401-943-1164 to obtain a Return Material Authorization (RMA) number. RMA numbers are valid for 30 days after the date of the shipment and cannot be extended or re-issued. We are unable to accept returns without an RMA number.
  • All returns except those of defective product are subject to a 15% restocking fee, and additional charges for handling or freight are refunded only in cases of defective products.
  • Return freight must be shipped prepaid. We recommend that you insure the package as you are responsible for risk of loss on all returned packages. We recommend that all cartons are properly packed as Electro Standards is not responsible for product damaged en route. We do not issue call tags for product returns.
  • Returned product must be clean, undamaged, and complete with all manuals, accessories, documents and packaging. The items must be in a resalable condition.
  • The product must have with it a copy of the original invoice or packing slip and the appropriate RMA paperwork.
  • If your item is not working properly, please contact Electro Standards at 401-943-1164 for help in trouble-shooting your application.
  • If the product is defective, Electro Standards will repair or replace that item (at our discretion) upon receipt and evaluation of the original product.
  • Electro Standards reserves the right to authorize product returns after 30 days from the invoice date in some cases. If the product is accepted after 30 days, credit will be issued toward future pruchases only and some additional restocking charges may be applied.
  • All credits from RMAs must be used within one calendar year of issue.

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Model 8982 7-to-1 Broadcast Sharing Unit with Cascade Port

  • Multiple units can be cascaded to allow expansive broadcast network!


  • PORT CONNECTORS: All Port and Common connections are DB25 female.
  • DISPLAY: (7) PORT LED's and one POWER LED displays status and activity.
  • POWER: UL Approved 100VAC/240VAC, 50/60 Hz wall mount power module supplies 12 VDC, 500 mA to the unit. (Cat No 523520)
  • DIMENSIONS:  8.0" W x 2.5" H x 8.0" D. (20.3 x 6.4 x 20.3 cm)
  • WEIGHT: Approximately 2.5 lbs. (1.1 kg)

Cascadable Broadcast Sharing Application: Cascading 7 or 13 Devices

  • Multiple units can be cascaded to allow expansive broadcast network.
  • Send asynchronous data to as many as thirteen printers, PC's, plotters or other "receive only" slave devices.

PathWay® Model 8982 7-to-1 Broadcast Sharing unit


  • A "BROADCAST-TYPE" port sharer.
  • Use a single phone line and modem to share up to seven RS232 devices.
  • Multiple units can be cascaded to create a more expansive broadcast network.
  • Run asynchronous half or full duplex.
  • Transparent to data rate up to 64 Kbps.
  • Leads supported are 2 thru 8 and 20.
  • For a "CONTENTION-TYPE" port sharer, see Model 4441, Cat. No. 304441

The Model 8982 RS232 / DB25 7-1 Broadcast Sharing Unit permits RS232 data broadcast from a single device connected to the Common port among seven devices connected to Ports 1-7 simultaneously.

The Model 8982 operates in a polling environment where Port 1-7 devices are polled for data.  Based on the content of the data sent from the Common Port device, the appropriate connected device responds.  Status LED indicators on the top of the unit display the signal activity of each port, and separate LED indicator represents the status of power connected to the unit.

Model 8982 Operation

The Model 8982 supports seven signals of the RS232 / DB25 Interface: pins 2 (TD), 3 (RD), 4 (RTS), 5 (CTS), 7 (SG), 8 (DCD), and 20 (DTR).  All of these signals are received and re-driven through the unit to ensure the signal is not loaded down or transmission degraded in any way.


Cat No 514296 CE and UL listed table mount power module, 100VAC-240VAC, 50-60Hz in place of the standard 115 VAC or 120 VAC power-module.  Ideal for international applications


2 TD  ← OUT
3 RD → IN
4  RTS
 5  CTS → IN
 7 SG  —
 8  DCD  IN
 20 DTR  ← OUT



2 TD  → IN
3 RD ← OUT
4  RTS
 5  CTS ← OUT
 7 SG
 8  DCD ← OUT
 20 DTR → IN

Electro Standards can supply all your Network Cable requirements. Click ere to reach our CABLES, COPPER NETWORK Webpage.

For custom network switches call our friendly customer support staff at 401-943-1164, email eslab@electrostandards.com, or complete our online form: /Products-Custom/Copper-Switch/

All data switches, data communication products, and data acquisition products are subject to a one year warranty against manufacturing defects.  The limit of ESL liability is limited to the cost of the ESL product provided.

*Prices online are subject to change and verification.

All ESL products are available for export.

Electro Standards welcomes International inquiries: commutateur d'ordinateur,  equipo interruptor, interruttore del calcolatore, interruptor do computador, dator switch.

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