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304441 - 4441 4-Channel DB9 RS232 Port Sharer

    232 Port Sharer
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Base Price:
$560.00
Catalog No: 304441
Model No: 4441
Feature:Automatic Channel Sequencing
Switch Type (Fiber, Ethernet, etc.):Other, Serial
Switch Application/Uses:Port Share Applications
Positions:4
Chassis/Rack Configuration:Desktop
Connector/Port:DB9
Pins Switched:3 (TD, RD and SG)
Comments:Allows 4 data Channels to Contend for One Port

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  • 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.
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  • 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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Overview

Path Way® RS232 Serial Data Port Sharer
Model 4441 4-Channel DB9 RS232 Serial Data Port Sharer with Data Activity Enabled Port Contention

  • Automatic "Channel Sequencing" allows 4 data channels to access one port!
  • Automatic Port Contention expands accessability of four channels to host computer. 

PathWay® Model 441 4-Channel DB9 RS232 Serial Data Port Sharer

SPECIFICATIONS:

  • PORT AND CHANNEL CONNECTORS: (5) DB9 Female connectors 
    labeled A, B, C, D and Common.
  • FRONT PANEL CONTROL: (1) Manual pushbutton allows local channel 
    selection control.
  • DISPLAY: (5) Front panel LED's display sharer scanning and power status.
  • POWER: UL Approved 120VAC, 60Hz wall mount power module supplies 
    12 VDC to the unit.
  • DIMENSIONS: Desktop, 8.0" W x 8.0" D x 2.5" H. (20.3 x 20.3 x 6.4 cm) 
  • WEIGHT: Approximately 3.5 lbs (1.6 kg)

4-CHANNEL DB9 RS232 SERIAL DATA PORT SHARER APPLICATION: The diagram illlustrates four asynchronous data channels A, B, C, and  D to contend for access to one  Host Computer connected to the DB9 COMMON port. Channels A, B, C, and D are sequentially scanned and monitored based on data activity. (Automatic Channel Sequencing Circuitry)

4--Channel DB9 RS232 Port Sharer, Data Activity Port Contention, Model 4441 App Note

FEATURES:

  • A "CONTENTION-TYPE" port sharer.
  • Allows four asynchronous data channels, A/B/C/D, to contend for access to one Common port.
  • Front panel LED's display channel scanning status and power status.
  • Signals supported: TD, RD, and SG.
  • Selectable timeout period.
  • Front panel control allows disabling of any erroneous streaming data channel.
  • For a "BROADCAST-TYPE", see Model 8982, Cat.No.302077. 

The PathWay® Model 4441 is a four channel, port sharing device.  It allows a single destination port, the Common port, to automatically connect through to any of four source channels, A, B, C, or D based on data activity.

Each of these respective four DB9 RS232 serial interface source channels contend for connection.  Channels A, B, C, and D are sequentially scanned or monitored for data activity.  Once data is detected on a single channel, the remaining three channels are locked out until the data traffic stops and is absent for a preset timeout period.  At that point, the Model 4441 4-channel data sharer resumes monitoring of all four channels for data activity.  There are status LED's that indicate the unit is scanning, or whether the unit has established a dedicated connection to a single channel.

OPERATION:

The devices connected to channels A, B, C and D of the Model 4441 sharing unit contend for connection to the Common port device.  Once activity is initiated on a source port A, B, C, or D, that channel is serviced.  Connection is maintained while data activity is detected between pin 3, TD, of the DB9 source channel and pin 2, RD, of the DB9 destination / Common port.  The signals supported by the Model 4441 are TD, RD, and SG.

While connected and data activity is present, the scanning is suspended.  The channel is released and scanning is resumed only after data activity has been absent for a  programmed timeout period, or if the channel is disabled via the front panel pushbutton switch.

The timeout period is selectable via a dipswitch located on the top circuit board inside the unit.  The program switch is accessible by removing the four screws that fasten the top cover to unit.  The Model 4441 is factory set for a one minute timeout period.  To change the period, please refer to the Operation Manual.

If a connected device is streaming erroneous data, the user can use the front panel pushbutton switch to disable the channel and remove it from the scanning/monitoring function.   Disabling the channel will allow the unit to continue to function as a port sharer among the remaining channels and connected devices.

PathWay®  is a registered trademark of Electro Standards Laboratories.

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

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.

All ESL products are available for export.

Electro Standards welcomes International inquiries: commutateur de données, interruptor de datos, dati interruttore, Przelacznik danych, comutador de dados. 

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Developer Tools

Database Activity Shipping Rates Performance Tracking Cache Storage Session Storage
0.3863028 seconds
# Seconds Since First Hit Trace Command Type Command Text Parameters Execution Time
1. 0 DBInterface.GetDataT show Text SELECT TOP(1) '0' AS ArticleID, 0 As ID, Product.MetaTitle As PageTitle, Product.MetaDescription As show - 0.0072064
2. 0 DBInterface.GetDataT show StoredProcedure [dbo].[DefaultSearchAttributeGetByUserID] @g_UserID =7e462848-5abf-42da-8444-3c4643809024
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3. 0.0312954 DBInterface.get_oSQL show StoredProcedure [dbo].[RecentlyViewedListLoadByEntityType] @UserID=7e462848-5abf-42da-8444-3c4643809024
@EntityType=product
@RowCount=5
@SiteID=1
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4. 0.0469185 DBInterface.GetDataT show StoredProcedure [dbo].[PageUrlLoadByPrimaryKey] @PageUrl=/304441-4441-4-channel-db9-rs232-port-sharer-180.html
@Type=PRODUCT
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5. 0.0781673 DBInterface.get_oSQL show StoredProcedure [dbo].[ProductLoadByPrimaryKey] @ProductID=180
@SiteID=1
@UserID=7e462848-5abf-42da-8444-3c4643809024
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6. 0.1003085 DBInterface.GetDataT show StoredProcedure [dbo].[CategoryListByProductId] @ProductId=180
@SiteID=1
@ShowHidden=False
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7. 0.1159699 DBInterface.GetDataT show StoredProcedure [dbo].[PageUrlLoadByPrimaryKey] @Type=CATEGORY
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8. 0.1159699 DBInterface.GetDataT show StoredProcedure [dbo].[DocumentLoadByProductKey] @ProductID=180
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9. 0.1472067 DBInterface.get_oSQL show StoredProcedure [dbo].[ImageLoadByProductKey] @ProductID=180
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10. 0.1472067 DBInterface.get_oSQL show StoredProcedure [dbo].[ProductRelationshipListByProductID] @ProductID=180
@SiteID=1
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11. 0.1629013 DBInterface.get_oSQL show StoredProcedure [dbo].[CL_procGetOtherProductsBought] @ProductID=180
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12. 0.1629013 DBInterface.get_oSQL show StoredProcedure [dbo].[AccessoryListLoadByProductKey] @ProductID=180
@ShowHidden=0
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13. 0.1629013 DBInterface.get_oSQL show StoredProcedure [dbo].[SKUListLoadByProductKey] @ProductID=180
@SiteID=1
@UserID=7e462848-5abf-42da-8444-3c4643809024
@ShowHidden=0
 0
14. 0.1941384 DBInterface.get_oSQL show StoredProcedure [dbo].[PriceListBySkuId] @SkuList=180
@UserID=7e462848-5abf-42da-8444-3c4643809024
@SiteID=1
 0.0155625
15. 0.1941384 DBInterface.GetDataT show StoredProcedure [dbo].[DefaultSearchAttributeGetByUserID] @g_UserID =7e462848-5abf-42da-8444-3c4643809024
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16. 0.2006658 DBInterface.GetDataT show StoredProcedure [dbo].[getProductAttributesBySkuId] @SkuId=180
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17. 0.2163651 DBInterface.get_oSQL show StoredProcedure [dbo].[SKUListLoadByProductKey] @ProductID=120
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 0.0156993
18. 0.231947 DBInterface.get_oSQL show StoredProcedure [dbo].[PriceListBySkuId] @SkuList=120
@UserID=
@SiteID=1
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19. 0.2475654 DBInterface.GetDataT show StoredProcedure [dbo].[getProductAttributesByProductId] @ProductId=180
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20. 0.2475654 DBInterface.GetDataT show StoredProcedure [dbo].[AttributesDistinctByProductID] @ProductId=180
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21. 0.2475654 DBInterface.GetDataT show StoredProcedure [dbo].[procGetAllCountryList] - 0
22. 0.2475654 DBInterface.GetDataT show StoredProcedure [dbo].[procGetCountryStatesList] @CountryCode=USA
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23. 0.2631937 DBInterface.GetDataT show StoredProcedure [dbo].[PageUrlLoadByPrimaryKey] @PageUrl=/304441-4441-4-channel-db9-rs232-port-sharer-180.html
@Type=PRODUCT
 0.0156283
24. 0.2788207 DBInterface.get_oSQL show StoredProcedure [dbo].[ProductLoadByPrimaryKey] @ProductID=180
@SiteID=1
@UserID=7e462848-5abf-42da-8444-3c4643809024
 0.015627
25. 0.2788207 DBInterface.GetDataT show StoredProcedure [dbo].[CategoryListByProductId] @ProductId=180
@SiteID=1
@ShowHidden=False
 0
26. 0.2788207 DBInterface.GetDataT show StoredProcedure [dbo].[PageUrlLoadByPrimaryKey] @Type=CATEGORY
 0
27. 0.2788207 DBInterface.get_oSQL show StoredProcedure [dbo].[SKUListLoadByProductKey] @ProductID=180
@SiteID=1
@UserID=7e462848-5abf-42da-8444-3c4643809024
@ShowHidden=0
 0
28. 0.2788207 DBInterface.GetDataT show StoredProcedure [dbo].[getProductAttributesBySkuId] @SkuId=180
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29. 0.2944441 DBInterface.GetDataT show StoredProcedure [dbo].[DocumentLoadByProductKey] @ProductID=180
 0.0156234
30. 0.2944441 DBInterface.get_oSQL show StoredProcedure [dbo].[ImageLoadByProductKey] @ProductID=180
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31. 0.3009578 DBInterface.get_oSQL show StoredProcedure [dbo].[ProductRelationshipListByProductID] @ProductID=180
@SiteID=1
 0.0065137
32. 0.3009578 DBInterface.get_oSQL show StoredProcedure [dbo].[SKUListLoadByProductKey] @ProductID=180
@SiteID=1
@UserID=7e462848-5abf-42da-8444-3c4643809024
@ShowHidden=0
 0
33. 0.3009578 DBInterface.get_oSQL show StoredProcedure [dbo].[PriceListBySkuId] @SkuList=180
@UserID=7e462848-5abf-42da-8444-3c4643809024
@SiteID=1
 0
34. 0.3009578 DBInterface.GetDataT show StoredProcedure [dbo].[DefaultSearchAttributeGetByUserID] @g_UserID =7e462848-5abf-42da-8444-3c4643809024
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35. 0.3009578 DBInterface.GetDataT show StoredProcedure [dbo].[getProductAttributesBySkuId] @SkuId=180
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36. 0.3166007 DBInterface.GetDataT show StoredProcedure [dbo].[getProductAttributesByProductId] @ProductId=180
 0.0156429
37. 0.3166007 DBInterface.GetDataT show StoredProcedure [dbo].[AttributesDistinctByProductID] @ProductId=180
 0
38. 0.3322264 DBInterface.GetDataT show StoredProcedure [dbo].[Cart_LoadByUserID] @UserID=7e462848-5abf-42da-8444-3c4643809024
@SiteID=1
 0
Total DB Execution Time 0.2768371
Session Key Session Value
UserId 7e462848-5abf-42da-8444-3c4643809024
IsDynamicallyGeneratedUserId True
AdminLastSitePage /304441-4441-4-channel-db9-rs232-port-sharer-180.html
AdminLastPage /GetProduct.aspx?PageKey=%2f304441-4441-4-channel-db9-rs232-port-sharer-180.html&unq=11/6/2026 1:54:17 PM
OrderNumber
Section Execution Time
DBInterface.vb 1.249696
MasterPage.master 0.3238071
DeveloperTools.ascx 0
Load Time:0.3863028s  |  Database Hits: 38